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Pablo P. Yepes | Senior Faculty Fellow | Senior Faculty Fellow | | e-mail:yepes@rice.edu | | - Ph.D. Particle Physics (1988) Santiago University, Spain
- M.S. Physics (1983) Santiago University, Spain
- B.S Physics (1982) Santiago University, Spain
| | Primary Department | Department of Physics and Astronomy | | |
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Department Affiliations |
| Bonner Nuclear LaboratoriesKen Kennedy Institute for Information Technology |
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Other Affiliations |
| MD Anderson |
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Websites |
| Collaboration with MD Anderson
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| Fast Dose Calculator
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| Personal Website
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| Rice & MD Anderson Collaboration: Radiation Treatment Optimization
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| Rice & MD Anderson Collaboration: Radiation Treatment Optimization
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| yepes
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Research Areas |
| Particle Physics, Nuclear Physics, Medical Physics |
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Research Statement |
| Pablo Yepes researchs in the area of heavy ion interactions. This includes the study of matter under extremes conditions of temperature and density, which may provide important clues for the understanding of the early universe. In addition these collisions have opened new possibilities in photon-photon collisions at large energies (photons are quanta of light). He has concentrated his efforts in the STAR experiment at the Relativistic Heavy Ion Collider at the Brookhaven National Laboratory. He played a major role in the design and development of fast analysis tools for the experiment. He has also made essential contributions in the analysis of Ultra-Peripheral Collisions. In addition he is part of a collaboration proposing the use of the next Large Hadronic Collider at CERN (European Laboratory for Particle Physics) in Geneva to study ion-ion interactions. For more information, see http://yepes.rice.edu/. |
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Improving Proton Therapy |
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An important focus on my research in the last years has been in the area of medical physics. Since 2007, a fruitful collaboration with MD Anderson has been developed. This effort fits well with the university guidelines for the next century of fostering interdisciplinary research and collaboration with other institutions, especially with the Texas Medical Center.
My efforts have been centered around proton therapy for cancer treatment. MD Anderson operates a Proton Therapy Center since 2006. This kind of radiotherapy has theoretical advantages over traditional radiotherapy with x-ray (photons) or electrons. The physical characteristics of the proton make it easier to minimize secondary effects, when treating patients with this type of radiation. Nevertheless, a number of issues need to be understood and controlled in order to take full advantage of the physical characteristics of proton radiation. One of those issues is how to calculate accurate dose distributions for a given set of radiation specifications. Proton dose distributions are more sensitive to the characteristics of the radiation and the environment than for traditional photon radiation. The most accurate distributions can be obtained with Monte Carlo methods. However, at the moment, they require long calculation times even with large computer resources. I have developed the Fast Dose Calculator (FDC), a track-repeating Monte Carlo approach, which drastically reduces the calculation times, without significantly compromising the accuracy of the results.
There are several applications of FDC we are investigating and developing. I received funding from IBM to develop a web interface for FDC. The intention is to provide a universally accessible tool to quickly estimate the advantages of proton therapy over traditional therapy for particular patients. Even though the number of proton therapy centers in the US, and in the world, has grown considerably in the last few years, they are still a small percentage of the total radiation therapy facilities. However, there are cases where proton therapy clearly presents clinically advantages over traditional therapy. For example, pediatric patients are more at risk of secondary cancers, produced by the treatment itself, due to their longer life expectancy. A prototype website is online (fdcw.rice.edu). Further work is still needed to make it an universally usable tool.
Since 2012, we have closely worked with our collaborators at MD Anderson (Dr. Radhe Mohan, Dr. Dragan Mirkovic, Dr. Uwe Titt, Dr. Sharmalee Randeniya) to make FDC available to researchers and clinicians at MD Anderson and study some cases of particular interest. We have focused on two areas: 4D lung cancer patients and IMPT.
Some forms of lung cancer seems particularly appropriate for the techniques I have developed. Analytical dose calculation algorithms used in the clinic work less well in anatomic areas with large inhomogeneities, where very dense (bone) and light (lung) structures are spatially close, like the thorax. FDC can provide higher quality dose calculations in those areas. Preliminary studies seems to indicate that there are cases where the differences in the dose calculated with the analytical methods and Monte Carlo are not negligible. Moreover, there are some cases where a cancer recurrence occurred in a area that was well irradiated according to the analytical methods, but was not according to the Monte Carlo calculations. Such results, if confirmed, will indicate a strong need to improve dose calculations to optimize treatment plans.
In addition, the problem of motion needs to be addressed when treating lung patients. The patients needs to breath during the treatment, what makes the tumor a moving target. The usual input for dose calculation is a 3D CT (Computer Tomography), which represents the patient as a 3D grid, where each element of the grid is assigned to a particular biological materials. For the thorax a 4D CT is used, where a series of 3D CTs are taken for various phases of the breathing cycle. At the moment, a 4D CT is used as input for the calculations, however it is turned into an “average” 3D CT, by taking for a given position of the 3D grid, the most dense material found there during the breathing cycle. FDC is fast enough that the dose distribution for each of the breathing cycles could be calculated separately, and then sum up properly according to the time the patient spends in each of the breathing phases.
In addition we are applying FDC to IMPT (Intensity Modulated Proton Therapy), the most advance technique for proton therapy. This technique uses a plurality of very narrow proton beams to conform the radiation to the intended target. It is a very computationally intense technique because it requires the optimization of thousands of variables. An accurate calculation of dose distributions, as those provided by FDC, is particularly important for an accurate outcome.
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Application of Particle Physics Techniques to Radiation Physics |
| Yepes started a collaboration with the University of Texas, MD Anderson Cancer Center in 2007. The goal of the collaboration is the development of a fast tool for patient treatment plan calculations using stochastic (Monte Carlo) techniques. Stochastic methods are more acurate than commonly used analytical approaches. However stochastic approaches are significantly more demanding in computational resources. The Fast Dose Calculator, developed as fruit of the collaboration, preserves the accuracy of stochastic approaches while reducing calculation times from hours to minutes. |
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Selected Publications |
| Abstracts |
| Pablo Yepes, Sharmalee Randeniyan, Wayne Newhauser ""Intercomparison of Dose Monte Carlo Codes for Proton Radiotherapy:Accuracy of Absorbed Dose Distributions and Speed of Execution"." (2007) Submitted |
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| Pablo Yepes, Sharmalee Randeniyan, Wayne Newhauser "A Track Repeating Algorithm for Fast Proton Dose Calculations"." (2007) Submitted |
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| J. Adams et al. "Forward neutral pion production in p+p and d+Au collisions at s(NN)**(1/2) = 200-GeV." Phys. Rev. Lett., 97 (2006) : 152302. |
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| J. Adams et al. "Measurements of identified particles at intermediate transverse momentum in the STAR experiment from Au + Au collisions at s(NN)**(1/2) =200- GeV." Phys. Rev. CSubmitted |
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| J. Adams et al. "The Multiplicity dependence of inclusive p(t) spectra from p-p collisions at s**(1/2) = 200-GeV." Phys. Rev. D, 74 (2006) : 032006. |
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| Refereed articles |
| Ultra-Intense Gamma-Rays Created Using the Texas Petawatt Laser
Alexander Henderson, Edison LIang (Rice U.), Nathan Riley (Texas U.), Pablo Yepes (Rice U.), Gillis Dyer, Kristina Serratto (Texas U.), Petr Shagin (Rice U.). Jan 13, 2014. 10 pp. Published in High Energy Dens.Phys. 12 (2014) 46-56
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| A New Boson with a Mass of 125 GeV Observed with the CMS Experiment at the Large Hadron Collider CMS Collaboration (Serguei Chatrchyan (Yerevan Phys. Inst.) et al.). 2012. 7 16 pp. Published in Science 338 (2012) 1569-1575 |
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| D. Tilak and P. Yepes "A Symmetric Probabilistic γ-index for Monte Carlo Dose Comparisons: An Application to Proton Therapy." Phys. Med. Biol., 59 (2014) : 153. |
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| ΛΛ Correlation Function in Au+Au collisions at sNN−−−−√= 200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Aug 19, 2014. 7 pp. Published in Phys.Rev.Lett. 114 (2015) 2, 022301 |
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| Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Feb 7, 2014. 7 pp. Published in Phys.Rev.Lett. 113 (2014) 092301 |
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| Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Jan 13, 2014. 7 pp. Published in Phys.Rev.Lett. 112 (2014) 16, 162301 |
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| Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Apr 5, 2014. 7 pp. Published in Phys.Rev.Lett. 113 (2014) 052302 |
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| Dielectron Mass Spectra from Au+Au Collisions at sNN−−−√ = 200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Dec 28, 2013. 7 pp. Published in Phys.Rev.Lett. 113 (2014) 2, 022301, Addendum-ibid. 113 (2014) 4, 049903 |
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| Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at sNN−−−√=200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Feb 7, 2014. 15 pp. Published in Phys.Rev. C90 (2014) 6, 064904 |
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| Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at sNN−−−√=200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Feb 7, 2014. 15 pp. Published in Phys.Rev. C90 (2014) 6, 064904 |
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| J/ψ polarization in p+p collisions at s√ = 200 GeV in STAR STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Nov 7, 2013. 9 pp. Published in Phys.Lett. B739 (2014) 180-188 |
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| J/ψ production at low pT in Au + Au and Cu + Cu collisions at sNN−−−−√=200 GeV with the STAR detector STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Oct 14, 2013. 13 pp. Published in Phys.Rev. C90 (2014) 2, 024906 |
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| Jet-Hadron Correlations in sNN−−−−√=200 GeV p+p and Central Au+Au Collisions STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Feb 25, 2013. 7 pp. Published in Phys.Rev.Lett. 112 (2014) 12, 122301 |
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| Measurement of charge multiplicity asymmetry correlations in high-energy nucleus-nucleus collisions at sNN−−−−√= 200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Mar 4, 2013. 24 pp. Published in Phys.Rev. C89 (2014) 4, 044908 |
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| Measurement of longitudinal spin asymmetries for weak boson production in polarized proton-proton collisions at RHIC STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Apr 28, 2014. 7 pp. Published in Phys.Rev.Lett. 113 (2014) 072301 |
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| Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at s=200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Sep 6, 2013. 11 pp. Published in Phys.Rev. D89 (2014) 1, 012001 |
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| Observation of D0 Meson Nuclear Modifications in Au+Au Collisions at sNN−−−−√=200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Apr 24, 2014. 7 pp. Published in Phys.Rev.Lett. 113 (2014) 14, 142301 |
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| Suppression of ϒ production in d+Au and Au+Au collisions at sNN−−−−√=200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Dec 12, 2013. 10 pp. Published in Phys.Lett. B735 (2014) 127-137 |
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| Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Sep 22, 2013. 7 pp. Published in Phys.Rev.Lett. 112 (2014) 3, 032302 |
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| A New Boson with a Mass of 125 GeV Observed with the CMS Experiment at the Large Hadron Collider CMS Collaboration (Serguei Chatrchyan (Yerevan Phys. Inst.) et al.). 2012. 7 16 pp. Published in Science 338 (2012) 1569-1575 |
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| Elliptic flow of identified hadrons in Au+Au collisions at sNN−−−−√= 7.7--62.4 GeV STAR Collaboration (L. Adamczyk et al.). Jan 2013. 33 pp. Published in Phys.Rev. C88 (2013) 014902 DOI: 10.1103/PhysRevC.88.014902 e-Print: arXiv:1301.2348 [Unknown] | PDF |
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| Experimental studies of di-jets in Au + Au collisions using angular correlations with respect to back-to-back leading hadrons STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Dec 2012. 13 pp. Published in Phys.Rev. C87 (2013) 4, 044903 DOI: 10.1103/PhysRevC.87.044903 e-Print: arXiv:1212.1653 [nucl-ex] | PDF |
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| Freeze-out Dynamics via Charged Kaon Femtoscopy in sqrt(sNN)=200 GeV Central Au+Au Collisions STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Feb 13, 2013. 8 pp. Published in Phys.Rev. C88 (2013) 034906 DOI: 10.1103/PhysRevC.88.034906 e-Print: arXiv:1302.3168 [nucl-ex] | PDF |
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| J/Psi production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Aug 2012. 7 pp. Published in Phys.Lett. B722 (2013) 55-62 DOI: 10.1016/j.physletb.2013.04.010 e-Print: arXiv:1208.2736 [nucl-ex] | PDF |
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| Measurement of J/Psi Azimuthal Anisotropy in Au+Au Collisions at sqrt(S_NN)= 200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Dec 2012. 6 pp. Published in Phys.Rev.Lett. 111 (2013) 052301 DOI: 10.1103/PhysRevLett.111.052301 e-Print: arXiv:1212.3304 [nucl-ex] | PDF |
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| Observation of an energy-dependent difference in elliptic flow between particles and anti-particles in relativistic heavy ion collisions STAR Collaboration (L. Adamczyk et al.). Jan 2013. 7 pp. Published in Phys.Rev.Lett. 110 (2013) 142301 DOI: 10.1103/PhysRevLett.110.142301 e-Print: arXiv:1301.2347 [nucl-ex] | PDF |
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| Single Spin Asymmetry A_N in Polarized Proton-Proton Elastic Scattering at sqrt(s)=200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Jun 2012. 11 pp. Published in Phys.Lett. B719 (2013) 62-69 DOI: 10.1016/j.physletb.2013.01.014 e-Print: arXiv:1206.1928 [nucl-ex] | PDF |
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| System Size Dependence of Transverse Momentum Correlations at RHIC STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Jan 2013. 12 pp. Published in Phys.Rev. C87 (2013) 064902 DOI: 10.1103/PhysRevC.87.064902 e-Print: arXiv:1301.6633 [nucl-ex] | PDF |
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| Third Harmonic Flow of Charged Particles in Au+Au Collisions at sqrtsNN = 200 GeV STAR Collaboration (L. Adamczyk (AGH-UST, Cracow) et al.). Jan 2013. 12 pp. Published in Phys.Rev. C88 (2013) 014904 LBNL (2013), LBNL-(2013) DOI: 10.1103/PhysRevC.88.014904 e-Print: arXiv:1301.2187 [nucl-ex] | PDF |
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| Tilak Dhakal and Pablo Yepes "A Symmetric Probabilistic γ-index for Monte Carlo Dose Comparisons: An
Application to Proton Therapy
." Submitted |
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| A Symmetric Probabilistic γ-index for Monte Carlo Dose Comparisons: An Application to Proton Therapy, submitted to Physics in Medicine and Biology.
Radiation Measurements, 58 (2013) 37-44. |
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| Scaling of Laser Produced Pair Plasmas And Comparison With Experimental Data. By Alexander Henderson, Edison Liang, Pablo Yepes, Hui Chen, Scott Wilks. [arXiv:1109.3721 [physics.plasm-ph]]. |
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| Studies of di-jet survival and surface emission bias in Au+Au collisions via angular correlations with respect to back-to-back leading hadrons. By STAR Collaboration (H. Agakishiev et al.). [arXiv:1102.2669 [nucl-ex]]. Phys.Rev. C83 (2011) 061901. |
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| $\rho^{0}$ Photoproduction in AuAu Collisions at $\sqrt{s_{NN}}$=62.4 GeV with STAR. By STAR Collaboration (G. Agakishiev et al.). [arXiv:1107.4630 [nucl-ex]]. |
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| Measurement of the $W \to e \nu$ and $Z/\gamma^* \to e^+e^-$ Production Cross Sections at Mid-rapidity in Proton-Proton Collisions at $\sqrt{s}$ = 500 GeV. By STAR Collaboration (G. Agakishiev et al.). [arXiv:1112.2980 [hep-ex]]. |
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| Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions at $\sqrt{s_{\rm NN}}$ = 62 and 200 GeV. By STAR Collaboration (G. Agakishiev et al.). [arXiv:1109.4380 [nucl-ex]]. |
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| Directed Flow of Identified Particles in Au + Au Collisions at $\sqrt{s{_NN}} = 200$ GeV at RHIC. By STAR Collaboration (Adamczyk et al.). [arXiv:1112.3930 [nucl-ex]]. |
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| Directed and elliptic flow of charged particles in Cu+Cu collisions at $\sqrt{\bm {s_{NN}}} =$ 22.4 GeV. By STAR Collaboration (G. Agakishiev et al.). Phys.Rev. C85 (2012) 014901. |
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| Evolution of the differential transverse momentum correlation function with centrality in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. By STAR Collaboration (H. Agakishiev et al.). Phys.Lett. B704 (2011) 467-473. |
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| High $p_{T}$ non-photonic electron production in $p+p$ collisions at $\sqrt{s} = 200$ GeV. By STAR Collaboration (H. Agakishiev et al.). [arXiv:1102.2611 [nucl-ex]]. Phys.Rev. D83 (2011) 052006. |
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| Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at $\sqrt{s_{_{NN}}} = 200$ GeV. By STAR Collaboration (G. Agakishiev et al.). [arXiv:1110.0579 [nucl-ex]]. |
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| Observation of the antimatter helium-4 nucleus. By STAR Collaboration (H. Agakishiev et al.). Nature 473 (2011) 353, Erratum-ibid. 475 (2011) 412. |
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| Strangeness Enhancement in Cu+Cu and Au+Au Collisions at $\sqrt{s_{NN}} = 200$ GeV. By STAR Collaboration (H. Agakishiev et al.). [arXiv:1107.2955 [nucl-ex]]. |
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| System size and energy dependence of near-side di-hadron correlations. By STAR Collaboration (G. Agakishiev et al.). Phys.Rev. C85 (2012) 014903. |
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| Z.W. Lin, J.H. Adams Jr., A.F. Barghouty, S.D. Randeniya, R.K. Tripathi,
J.W. Watts, P.P. Yepes "Comparisons of several transport models in their predictions
in typical space radiation environments." Advances in Space Research, 49 (2012) : 797-806. |
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| Pablo P Yepes, Dragan Mirkovic, Phillip J Taddei "A GPU implementation of a track-repeating algorithm for proton radiotherapy dose calculations.." Phys. Med. Biol., 55 (201) : 7107. |
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| Pablo Yepes, Wayne Newhauser, Philip Taddei, Dragan Mirkovic, Uwe Titt, Jessie Huang
"Application of a Fast Proton Dose Calculation Algorithm to a Thorax Geometry." Rad. Meas., 45 (2010) : 1367. |
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| STAR Collaboration "$\Upsilon$ cross section in $p+p$ collisions at $\sqrt(s) = 200$ GeV.
By STAR Collaboration (B.I. Abelev et al.). ." Phys. Rev. , D82 (2010) : 012004. |
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| STAR Collaboration "An Experimental Exploration of the QCD Phase Diagram: The Search for the Critical Point and the Onset of De-confinement.
." e-Print: arXiv:1007.2613In Revision |
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| STAR Collaboration "Azimuthal di-hadron correlations in d+Au and Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV from STAR.
." Phys. Rev., C82 (2010) : 024912. |
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| STAR Collaboration "Balance Functions from Au$+$Au, $d+$Au, and $p+p$ Collisions at $\sqrt{s_{NN}}$ = 200 GeV.
." Phys. Rev. , C82 (2010) : 024905. |
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| STAR Collaboration "Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC.
." Nucl. Phys., A832 (2010) : 134. |
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| STAR Collaboration "Charged and strange hadron elliptic flow in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV.
." Phys. Rev., C81 (2010) : 044902. |
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| STAR Collaboration "Higher Moments of Net-proton Multiplicity Distributions at RHIC.
." Phys. Rev. Lett., 105 (2010) : 022302. |
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| STAR Collaboration "Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at s(NN)**(1/2) = 9.2- GeV.
." Phys. Rev., C81 (2010) : 024911. |
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| STAR Collaboration "Inclusive pi^0, eta, and direct photon production at high transverse momentum in p+p and d+Au collisions at sqrt(s_NN) = 200 GeV.
." Phys. Rev., C81 (2010) : 064904. |
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| STAR Collaboration "K*0 production in Cu+Cu and Au+Au collisions at \sqrt{s_NN} = 62.4 GeV and 200 GeV.
." e-Print: arXiv:1006.1961In Revision |
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| STAR Collaboration "Longitudinal scaling property of the charge balance function in Au + Au collisions at 200 GeV.
B.I. Abelev et al. Feb 2010. 6pp.
." Phys. Lett., B690 (2010) : 239-244. |
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| STAR Collaboration "Measurement of the Bottom contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{s} $=200 GeV.
." Phys. Rev. Lett., 105 (2010) : 202301. |
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| STAR Collaboration "Measurement of the parity-violating longitudinal single-spin asymmetry for $W^{\pm}$ boson production in polarized proton-proton collisions at $\sqrt{s} = 500-GeV$.
." Submitted |
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| STAR Collaboration "Measurements of Dihadron Correlations Relative to the Event Plane in Au+Au Collisions at $\sqrt{s_{NN}}=200$ GeV.
." e-Print: arXiv:1009.0326 [hep-ex] Submitted |
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| STAR Collaboration "Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy ion collisions.
." Phys. Rev., C81 (2010) : 054908. |
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| STAR Collaboration "Observation of pi+ pi- pi+ pi- Photoproduction in Ultra-Peripheral Heavy Ion Collisions at STAR.." Phys. Rev., C81 (2010) : 044901. |
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| STAR Collaboration "Pion femtoscopy in p+p collisions at sqrt(s)=200 GeV.
." Submitted |
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| STAR Collaboration "Scaling properties at freeze-out in relativistic heavy ion collisions.
By STAR Collaboration ." In Revision |
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| STAR Collaboration "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV.
." Phys. Rev., C81 (2010) : 054907. |
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| STAR Collaboration "Studying Parton Energy Loss in Heavy-Ion Collisions via Direct-Photon and Charged-Particle Azimuthal Correlations.
." Phys. Rev., C82 (2010) : 034909. |
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| STAR Collaboration "System size dependence of associated yields in hadron-triggered jets.
." Phys. Lett., B683 (2010) : 123. |
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| STAR Collaboration "Three-particle coincidence of the long range pseudorapidity correlation in high energy nucleus-nucleus collisions.." Phys. Rev. Lett., 105 (2010) : 022301. |
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| Phys. Med. Bio 54 (2009) N21-N28. |
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| C. Adler et al. (STAR Collaboration) "KAON PRODUCTION AND KAON TO PION RATIO IN AU+AU COLLISIONS AT S(NN)**1/2 = 130-GEV." Phys. Lett., B595 (2004) : 143-150. |
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| J. Adams (STAR Collaboration) "AZIMUTHAL ANISOTROPY AT RHIC: THE FIRST AND FOURTH HARMONICS." Phys. Rev. Lett., 92 (2004) : 062301. |
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| J. Adams et al. "AZIMUTHALLY SENSITIVE HBT IN AU + AU COLLISIONS AT S(NN)**(1/2) = 200-GEV.
." Phys. Rev. Lett., 93 (2004) : 012301. |
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| J. Adams et al. (STAR Collaboration) "CENTRALITY AND PSEUDORAPIDITY DEPENDENCE OF CHARGED HADRON PRODUCTION AT INTERMEDIATE P(T) IN AU + AU COLLISIONS AT S(NN)**(1/2) = 130-GEV.
." Phys. Rev., C70 (2004) : 044901. |
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| J. Adams et al. (STAR Collaboration) "CROSS-SECTIONS AND TRANSVERSE SINGLE SPIN ASYMMETRIES IN FORWARD NEUTRAL PION PRODUCTION FROM PROTON COLLISIONS AT S**(1/2) = 200- GEV.
." Phys. Rev. Lett., 92 (2004) : 171801. |
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| J. Adams et al. (STAR Collaboration) "IDENTIFIED PARTICLE DISTRIBUTIONS IN PP AND AU+AU COLLISIONS AT S(NN)**(1/2) = 200 GEV." Phys. Rev. Lett., 92 (2004) : 112301. |
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| J. Adams et al. (STAR Collaboration) "MULTISTRANGE BARYON PRODUCTION IN AU-AU COLLISIONS AT S(NN)**1/2 = 130 GEV." Phys. Rev. Lett., 92 (2004) : 182301. |
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| J. Adams et al. (STAR Collaboration) "PARTICLE TYPE DEPENDENCE OF AZIMUTHAL ANISOTROPY AND NUCLEAR MODIFICATION OF PARTICLE PRODUCTION IN AU + AU COLLISIONS AT S(NN)**(1/2) = 200-GEV.
." Phys. Rev. Lett., 92 (2004) : 052302. |
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| J. Adams et al. (STAR Collaboration) "PHOTON AND NEUTRAL PION PRODUCTION IN AU + AU COLLISIONS AT S(NN)**(1/2) = 130-GEV.
." Phys. Rev., C70 (2004) : 044902. |
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| J. Adams et al. (STAR Collaboration) "RAPIDITY AND CENTRALITY DEPENDENCE OF PROTON AND ANTI-PROTON PRODUCTION FROM AU-197 + AU-197 COLLISIONS AT (S(NN))**(1/2)) = 130-GEV.
." Phys. Rev., C70 (2004) : 041901. |
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| J. Adams et al. (STAR Collaboration) "RHO0 PRODUCTION AND POSSIBLE MODIFICATION IN AU+AU AND P+P COLLISIONS AT S(NN)**1/2 = 200-GEV." Phys. Rev. Lett., 92 (2004) : 092301. |
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| STAR Collaboration (J. Adams et al.) "PRODUCTION OF E+ E- PAIRS ACCOMPANIED BY NUCLEAR DISSOCIATION IN ULTRA-PERIPHERAL HEAVY ION COLLISION.
." Phys.Rev., C70 (2004) : 031902. |
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| Articles |
| Scaling of Laser Produced Pair Plasmas And Comparison With Experimental Data By Alexander Henderson, Edison Liang, Pablo Yepes, Hui Chen, Scott Wilks. arXiv:1109.3721 [physics.plasm-ph] |
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| Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC By CMS Collaboration (Serguei Chatrchyan et al.). arXiv:1207.7235 [hep-ex]. 10.1016/j.physletb.2012.08.021. Phys.Lett. B716 (2012) 30-61. |
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| Inclusive charged hadron elliptic flow in Au + Au collisions at $\sqrt{s_{NN}}$ = 7.7 - 39 GeV By STAR Collaboration (L. Adamczyk et al.). arXiv:1206.5528 [nucl-ex]. 10.1103/PhysRevC.86.054908. Phys.Rev. C86 (2012) 054908. |
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| $\rho^{0}$ Photoproduction in AuAu Collisions at $\sqrt{s_{NN}}$=62.4 GeV with STAR By STAR Collaboration (G. Agakishiev et al.). arXiv:1107.4630 [nucl-ex]. 10.1103/PhysRevC.85.014910. Phys.Rev. C85 (2012) 014910. |
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| Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions at $\sqrt{s_{\rm NN}}$ = 62 and 200 GeV By STAR Collaboration (G. Agakishiev et al.). arXiv:1109.4380 [nucl-ex]. 10.1103/PhysRevC.86.064902. Phys.Rev. C86 (2012) 064902 |
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| Directed and elliptic flow of charged particles in Cu+Cu collisions at $\sqrt{\bm {s_{NN}}} =$ 22.4 GeV By STAR Collaboration (G. Agakishiev et al.). arXiv:1109.5446 [nucl-ex]. 10.1103/PhysRevC.85.014901. Phys.Rev. C85 (2012) 014901 |
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| Energy and system-size dependence of two- and four-particle $v_2$ measurements in heavy-ion collisions at RHIC and their implications on flow fluctuations and nonflow By STAR Collaboration (G. Agakishiev et al.). arXiv:1111.5637 [nucl-ex]. 10.1103/PhysRevC.86.014904. Phys.Rev. C86 (2012) 014904. |
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| Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at $\sqrt{s_{_{NN}}} = 200$ GeV By STAR Collaboration (G. Agakishiev et al.). arXiv:1110.0579 [nucl-ex]. 10.1103/PhysRevLett.108.072302. Phys.Rev.Lett. 108 (2012) 072302. |
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| Strangeness Enhancement in Cu+Cu and Au+Au Collisions at $\sqrt{s_{NN}} = 200$ GeV By STAR Collaboration (G. Agakishiev et al.). arXiv:1107.2955 [nucl-ex]. 10.1103/PhysRevLett.108.072301. Phys.Rev.Lett. 108 (2012) 072301 |
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| System size and energy dependence of near-side di-hadron correlations By STAR Collaboration (G. Agakishiev et al.). arXiv:1110.5800 [nucl-ex]. 10.1103/PhysRevC.85.014903. Phys.Rev. C85 (2012) 014903 |
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| Di-electron spectrum at mid-rapidity in $p+p$ collisions at $\sqrt{s} = 200$ GeV By STAR Collaboration (L. Adamczyk et al.). arXiv:1204.1890 [nucl-ex]. 10.1103/PhysRevC.86.024906. Phys.Rev. C86 (2012) 024906. |
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| Measurements of $D^{0}$ and $D^{*}$ Production in $p+p$ Collisions at $\sqrt{s} = 200$ GeV By STAR Collaboration (L. Adamczyk et al.). arXiv:1204.4244 [nucl-ex]. 10.1103/PhysRevD.86.072013. Phys.Rev. D86 (2012) 072013. |
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| Directed Flow of Identified Particles in Au + Au Collisions at $\sqrt{s{_NN}} = 200$ GeV at RHIC By STAR Collaboration (L. Adamczyk et al.). arXiv:1112.3930 [nucl-ex]. 10.1103/PhysRevLett.108.202301. Phys.Rev.Lett. 108 (2012) 202301. |
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| Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarized $p+p$ collisions at $\sqrt{s}=200$ GeV By STAR Collaboration (L. Adamczyk et al.). arXiv:1205.2735 [nucl-ex]. 10.1103/PhysRevD.86.032006. Phys.Rev. D86 (2012) 032006. |
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| Measurement of the $W \to e \nu$ and $Z/\gamma^* \to e^+e^-$ Production Cross Sections at Mid-rapidity in Proton-Proton Collisions at $\sqrt{s}$ = 500 GeV By STAR Collaboration (L. Adamczyk et al.). arXiv:1112.2980 [hep-ex]. 10.1103/PhysRevD.85.092010. Phys.Rev. D85 (2012) 092010. |
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| Single Spin Asymmetry $A_N$ in Polarized Proton-Proton Elastic Scattering at $\sqrt{s}=200$ GeV By STAR Collaboration (L. Adamczyk et al.). arXiv:1206.1928 [nucl-ex]. 10.1016/j.physletb.2013.01.014. Phys.Lett. B719 (2013) 62-69. |
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| Transverse Single-Spin Asymmetry and Cross-Section for $\pi^0$ and $\eta$ Mesons at Large Feynman-$x$ in Polarized $p+p$ Collisions at $\sqrt{s}=200$ GeV By STAR Collaboration (L. Adamczyk et al.). arXiv:1205.6826 [nucl-ex]. 10.1103/PhysRevD.86.051101. Phys.Rev. D86 (2012) 051101. |
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| STAR Collaboration " Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation. By STAR Collaboration (B.I. Abelev et al.). Sep 2009. (Received Dec 18, 2009). 6pp. Published in Phys.Rev.Lett.103:251601(2009). ." |
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| STAR Collaboration " Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au+Au Collisions at s(NN)**(1/2) = 200-GeV.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " J/psi production at high transverse momentum in p+p and Cu+Cu collisions at s(NN)**1/2 = 200GeV.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " K/pi Fluctuations at Relativistic Energies.
By STAR Collaboration (B.I. Abelev et al.). (2009). ." |
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| STAR Collaboration " Long range rapidity correlations and jet production in high energy nuclear collisions.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " Longitudinal Spin Transfer to Lambda and anti-Lambda Hyperons in Polarized Proton-Proton Collisions at s**(1/2) = 200-GeV.
By STAR Collaboration (B.I. Abelev et al.) Long author list - awaiting processing. Published in Phys.Rev.D80:111102 (2009). ." |
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| STAR Collaboration " Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at sqrt(s) = 200 GeV. By The STAR Collaboration (B.I. Abelev et al.). 6pp.Published in Phys.Rev.D80:111108 (2009). ." |
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| STAR Collaboration " Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at sqrt(s) = 200 GeV. By The STAR Collaboration (B.I. Abelev et al.). 6pp.Published in Phys.Rev.D80:111108 (2009). ." |
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| STAR Collaboration " Measurement of D* Mesons in Jets from p+p Collisions at s**(1/2) = 200-GeV.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " Neutral Pion Production in Au+Au Collisions at s(NN)**(1/2) = 200-GeV.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " Neutral pion production in Au+Au collisions at s(NN)=200 GeV. Published in Phys.Rev.C80:044905 (2009).." |
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| STAR Collaboration " Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy ion collisions.
By STAR Collaboration (B.I. Abelev et al.) (2009).." |
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| STAR Collaboration " System size dependence of associated yields in hadron-triggered jets.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " Yields and elliptic flow of d(anti-d) and He-3(anti-He-3) in Au + Au collisions at s(NN)**(1/2) = 200- GeV.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration " Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at s(NN)**(1/2) = 9.2- GeV. (2009) ." |
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| STAR Collaboration " Pion Interferometry in Au+Au and Cu+Cu Collisions at RHIC.
By STAR Collaboration (B.I. Abelev et al.). (2009).." |
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| STAR Collaboration "Delta phi Delta eta Correlations in Central Au+Au Collisions at s(NN)**(1/2) = 200-GeV.." Phys. Rev., C75 (2007) : 034901. |
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| STAR Collaboration "Energy dependence of pi+-, p and anti-p transverse momentum spectra for Au+Au collisions at s(NN)**(1/2) = 62.4 and 200-GeV." , 655 (2007) : 104-107. |
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| Phys.Rev.C76:024915,2007. |
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| STAR Collaboration "Mass, quark-number, and sqrt s(NN) dependence of the second and fourth flow harmonics in ultra-relativistic nucleus-nucleus collisions." Phys. Rev., C75 (2007) : 054906. |
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| STAR Collaboration "Measurement of transverse single-spin asymmetries for di-jet production in proton-proton collisions at s**(1/2) = 200-GeV
." Phys. Rev. Lett., 99 (2007) : 142003. |
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| STAR Collaboration "Partonic flow and phi-meson production in Au + Au collisions at s(NN)**!(1/) = 200-GeV." , 99 (2007) : 112301. |
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| STAR Collaboration "Rapidity and species dependence of particle production at large transverse momentum for d+Au collisions at s(NN)**(1/2) = 200-GeV." Phys. Rev., C76 (2007) : 054903. |
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| STAR Collaboration "Scaling Properties of Hyperon Production in Au+Au Collisions at s**(1/2) = 200-GeV." Phys. Rev. Lett., 98 (2007) : 062301. |
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| STAR Collaboration "Strange particle production in p+p collisions at s**(1/2) = 200-GeV." Phys. Rev., C75 (2007) : 064901. |
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| STAR Collaboration "Strangelet search at RHIC." Phys. Rev., C76 (2007) : 011901. |
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| STAR Collaboration "The Energy dependence of p(t) angular correlations inferred from mean-p(t) fluctuation scale dependence in heavy ion collisions at the SPS and RHIC." J. Phys, G33 (2007) : 451-466. |
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| STAR Collaboration "Transverse momentum and centrality dependence of high-p(T) non-photonic electron suppression in Au+Au collisions at s(NN)**(1/2) = 200-GeV." Phys. Rev. Lett., 98 (2007) : 192301. |
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| STAR Collaboration "Transverse momentum correlations and minijet dissipation in Au-Au collisions at s(NN)**(1/2)-GeV.
By STAR Collaboration
J.Phys.G34:799-816,2007. [nucl-ex/0408012]." J. Phys, G34 (2007) : 799-816. |
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| B.I. Abelev et al. "Identified baryon and meson distributions at large transverse momenta from Au+Au collisions at s(NN)**(1/2) = 200-GeV
." Phys. Rev. Lett., 97 (2006) : 152301. |
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| B.I. Abelev et al. "Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at s**(1/2) = 200-GeV." Phys. Rev. Lett.Submitted |
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| B.I. Abelev et al. "Neutral kaon interferometry in Au+Au collisions at s(NN)**(1/2) = 200-GeV." Phys. Rev. C, 74 (20060) : 054902. |
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| B.I. Abelev et al. "Strange particle production in p+p collisions at s**(1/2) = 200-GeV
." Phys. Rev. C (2006) Submitted |
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| B.I. Abelev et al. "Transverse momentum and centrality dependence of high-p(T) non-photonic electron suppression in Au+Au collisions at s(NN)**(1/2) = 200-GeV
." Phys. Rev. Lett. (2006) Submitted |
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| J. Adams et al. "Delta phi Delta eta Correlations in Central Au+Au Collisions at s(NN)**(1/2) = 200-GeV." Phys. Rev. C (2006) Submitted |
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| J. Adams et al. "Direct observation of dijets in central Au+Au collisions at s(NN)**(1/2) = 200-GeV." Phys. Rev. Lett., 97 (2006) : 162301. |
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| J. Adams et al. "Directed flow in Au+Au collisions at s(NN)**(1/2) = 62-GeV.
By STAR Collaboration (John Adams et al.). Oct 2005. 8pp.
Published in Phys.Rev.C73:034903,2006." Phys. Rev. C, 73 (2006) : 034903. |
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| J. Adams et al. "Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at s(NN)**(1/2) = 200-GeV." Phys. Lett. B, 637 (2006) : 161-169. |
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| J. Adams et al. "Multiplicity and pseudorapidity distributions of charged particles and photons at forward pseudorapidity in Au + Au collisions at s(NN)**(1/2) = 62.4-GeV
." Phys. Rev. C, 73 (2006) : 034906. |
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| J. Adams et al. "Multiplicity and pseudorapidity distributions of charged particles and photons at forward pseudorapidity in Au + Au collisions at s(NN)**(1/2) = 62.4-GeV
." Phys. Rev. C, 73 (2006) : 034906. |
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| J. Adams et al. "Proton - lambda correlations in central Au+Au collisions at S(NN)**(1/2) = 200-GeV
." Phys. Rev. C, 74 (2006) : 064906. |
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| J. Adams et al. "Strange baryon resonance production in s(NN)**(1/2) = 200-GeV p+p and Au+Au collisions." Phys. Rev. Lett., 97 (2006) : 132301. |
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| J. Adams et al. "Transverse-momentum p(t) correlations on (eta, phi) from mean-p(t) fluctuations in Au-Au collisions at s(NN)**1/2 = 200-GeV.
." J. Phys. G, 32 (2006) : L37-L48. |
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| Editor of books |
| A. J. Baltz, G. Baur, D. d'Enterria, L. Frankfurt, F. Gelis, V. Guzey, K. Hencken, Yu. Kharlov, M. Klasen, S. R. Klein, V. Nikulin, J. Nystrand, I. A. Pshenichnov, S. Sadovsky, E. Scapparone, J. Seger, M. Strikman, M. Tverskoy, R. Vogt, S. N. White, U. A. Wiedemann, P. Yepes, M. Zhalov "The Physics of Ultraperipheral Collisions at the LHC." In Press |
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| Book chapters |
| CMS Collaboration "CMS technical design report, volume II: Physics performance." , G34 (2007) : 995-1579. |
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| Conference papers |
| H. Caines et al. (STAR Collaboration) "AN UPDATE FROM STAR - USING STRANGENESS TO PROBE RELATIVISTIC HEAVY ION COLLISIONS." J. Phys., G30 (2004) : S61-S73. |
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Presentations |
| Conference Committee Member |
| "A Track Repeating Algorithm for Fast Proton Dose Calculations." 11th International Conference on Radiation Shielding, Callaway Gardens, Pine Moutain, Georgia. (April 13-18, 2008) With Sharmalee Randeniya, Wayne Newhauser, Philip Taddei |
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| "Intercomparison of Monte Carlo Radiation Transport Codes MCNPX, GEANT4 and FLUKA for Simulating Proton Radiation Therapy of the Eye." 11th International Conference on Radiation Shielding, Callaway Gardens, Pine Moutain, Georgia. (April 13-18, 2008) With Sharmalee Randeniya, Wayne Newhauser, Philip Taddei |
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| Invited Papers |
| "High-Speed Dose Calculations with the FDC Algorithm
." 4th Joint Symposium on Computational Medical Physics, "The Nexus of Research on Cancer, Radiation, and Supercomputing: Dawn of a Golden Age?", Houston, Texas. (April 7, 2010) |
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| "A GPU Track-Repeating Algorithm for Proton and Photon Therapy
." "Joint International Conference on Supercomputing in Nuclear Applications and Monte Carlo 2010", Tokyo, Japan. (Oct 20, 2010) |
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| Invited Talks |
| "Fast and Accurate Calculations for Proton Therapy." 1st New Mexico Workshop on Monte Carlo for Particle Therapy Treatment Planning , Albuquerque, New Mexico. (May 17, 2011) |
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| "Advances in fast dose calculations using a track repeating algorithn: Application in adaptive image-guided proton therapy ." Recent Advances in Proton Radiation Therapy Research, Northern Illinois University, Naperville. (June 23, 2009) |
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| "Fast Proton Calculations for Proton Therapy." Radiation Physics Department, University of Texas, MD Anderson Cancer Center. (February 24, 2009) |
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| Lectures |
| "A Fast and Accurate Dose Calculation Algorithm." 11th Neutron and Ion Dosimetry Symposium (NEUDOS-11), iThemba LABS, Cape Town, South Africa. (October 15, 2009) |
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| Posters |
| "Fast Dose Calculator Website." 2011 Radiological Society of North America, Chicago, IL. (December 1, 2011) |
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| Seminar Speaker |
| University of Texas MD Anderson Cancer Center |
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| Workshops |
| Application of Laser Induced Beams to Radiotherapy, Rice University |
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| "A Jet Analysis Plan for CMS Heavy Ions." Dec 04 CMS Week, CERN, Geneva, Switzerland. (12/11/04) With Pablo Yepes |
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| "Pi Zero Reconstruction in HI." June 04 CMS Week, CERN, Geneva, Switzerland. (6/12/04) With Jinghua Liu and Pablo Yepes |
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| "Pion Z Reconstruction in Heavy Ions with CMS." Dec 04 CMS Week, CERN, Geneva, Switzerland. (12/11/04) With Yura Gorbunov and Pablo Yepes |
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Editorial Positions |
| Other, Physics in Medicine and Biology. (2011 - 2014)
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| Other, Physics in Medicine and Biology. Institute of Physics. (2012 - 2014)
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| Other, Nuclear Instruments and Methods. Elsevier. (2014 - 2014)
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| Other, Physics in Medicine and Biology. Institute of Physics. (2011 - 2014)
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Supervised Theses & Dissertations |
| Tilak R Dhakal, Master A Symmetric Probabilistic γ-index for Monte Carlo Dose Comparisons: An Application to Proton Therapy. (2013) (Thesis or Dissertation Director)
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| Alexander Henderson, PhD Scaling of Laser Produced Pair Plasmas And Comparison With Experimental Data. (2014) (Committee Member)
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Awards, Prizes, & Fellowships |
| Award 50th Anniversary Fomento Schools , Fomento Schools (Spain) (April 5, 2014)
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| Top 20 reviewers of Physics in Medicine and Physics, IOP Publishing (January 2012)
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| Faculty Award, IBM (Dec 2011)
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| Faculty Award, IBM (Dec 2010)
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| "Improving the Accuracy and Speed of Treatment Planning Calculations for Cancer Patients., The Gulf Coast Center for Computational Cancer Research (April 26, 2007)
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| ITR Research Grant, NSF (8/1/04)
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Positions Held |
| Reviewer, Physics in Medicine and Biology. (2010 - 2010)
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| Adjunct Associate Professor, MD Anderson Cancer Center, University of Texas. (2012 - 2012)
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| Reviewer, Physics in Medicine and Biology. (2012 - 2012)
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| Adjunct Associate Professor, MD Anderson Cancer Center, University of Texas. (2008 - 2008)
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