Parton energy loss in heavy-ion collisions via direct-photon and charged-particle azimuthal correlations
文献类型：期刊论文
| 作者 | Singaraju, R. N.7; Simon, F.32; Sichtermann, E. P.34; Shi, X-H.14; Shi, S. S.4; Sharma, M.5; Shao, M.16; Shahaliev, E.38; Shabetai, A.40; Seyboth, P.32 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2010-09-30 |
| 卷号 | 82期号:3页码:8 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.82.034909 |
| 英文摘要 | Charged-particle spectra associated with direct photon (gamma(dir)) and pi(0) are measured in p + p and Au + Au collisions at center-of-mass energy root(S)(NN) = 200 GeV with the STAR detector at the Relativistic Heavy Ion Collider. A shower-shape analysis is used to partially discriminate between gamma(dir) and pi(0). Assuming no associated charged particles in the gamma(dir) direction ( near side) and small contribution from fragmentation photons (gamma(frag)), the associated charged-particle yields opposite to gamma(dir) (away side) are extracted. In central Au + Au collisions, the charged-particle yields at midrapidity (vertical bar eta vertical bar < 1) and high transverse momentum (3 < (assoc)(PT) < 16 GeV/c) associated with gamma(dir) and pi(0) (vertical bar eta vertical bar < 0.9, 8 < (trig)(PT) < 16 GeV/c) are suppressed by a factor of 3-5 compared with p + p collisions. The observed suppression of the associated charged particles is similar for gamma(dir) and pi(0) and independent of the gamma(dir) energy within uncertainties. These measurements indicate that, in the kinematic range covered and within our current experimental uncertainties, the parton energy loss shows no sensitivity to the parton initial energy, path length, or color charge. |
| WOS关键词 | QUARK-GLUON PLASMA ; JET TOMOGRAPHY |
| 资助项目 | RHIC Operations Group ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of NP within US DOE Office of Science ; Office of HEP within US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG ; STFC ; EPSRC of the United Kingdom ; FAPESP CNPq of Brazil ; Ministry of Education and Science of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; GA of the Czech Republic ; MSMT of the Czech Republic ; FOM of the Netherlands ; NWO of the Netherlands ; DAE of India ; DST of India ; CSIR of India ; Polish Ministry of Science and Higher Education ; Korea Research Foundation ; Ministry of Science, Education, and Sports of the Republic of Croatia ; Russian Ministry of Science and Technology ; RosAtom of Russia ; [CNRS/IN2P3] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000282318700007 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | RHIC Operations Group ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of NP within US DOE Office of Science ; Office of HEP within US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG ; STFC ; EPSRC of the United Kingdom ; FAPESP CNPq of Brazil ; Ministry of Education and Science of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; GA of the Czech Republic ; MSMT of the Czech Republic ; FOM of the Netherlands ; NWO of the Netherlands ; DAE of India ; DST of India ; CSIR of India ; Polish Ministry of Science and Higher Education ; Korea Research Foundation ; Ministry of Science, Education, and Sports of the Republic of Croatia ; Russian Ministry of Science and Technology ; RosAtom of Russia |
| 公开日期 | 2011-04-20 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/7855]  |
| 专题 | 近代物理研究所_近代物理研究所知识存储（2010之前） |
| 通讯作者 | Abelev, B. I. |
| 作者单位 | 1.Warsaw Univ Technol, Warsaw, Poland 2.Univ Zagreb, HR-10002 Zagreb, Croatia 3.Yale Univ, New Haven, CT 06520 USA 4.CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China 5.Wayne State Univ, Detroit, MI 48201 USA 6.Univ Washington, Seattle, WA 98195 USA 7.Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, India 8.Valparaiso Univ, Valparaiso, IN 46383 USA 9.USN Acad, Annapolis, MD 21402 USA 10.Tsinghua Univ, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Singaraju, R. N.,Simon, F.,Sichtermann, E. P.,et al. Parton energy loss in heavy-ion collisions via direct-photon and charged-particle azimuthal correlations[J]. PHYSICAL REVIEW C,2010,82(3):8. |
| APA | Singaraju, R. N..,Simon, F..,Sichtermann, E. P..,Shi, X-H..,Shi, S. S..,...&Skoby, M. J..(2010).Parton energy loss in heavy-ion collisions via direct-photon and charged-particle azimuthal correlations.PHYSICAL REVIEW C,82(3),8. |
| MLA | Singaraju, R. N.,et al."Parton energy loss in heavy-ion collisions via direct-photon and charged-particle azimuthal correlations".PHYSICAL REVIEW C 82.3(2010):8. |
入库方式： OAI收割
来源：近代物理研究所
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