Photons from the early stages of relativistic heavy-ion collisions
文献类型：期刊论文
| 作者 | Oliva, L.1,2; Ruggieri, M.3; Plumari, S.4,5; Scardina, F.2,4; Peng, G. X.3,6; Greco, V.2,3,4 |
| 刊名 | Physical review c
 |
| 出版日期 | 2017-07-28 |
| 卷号 | 96期号:1页码:10 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/physrevc.96.014914 |
| 通讯作者 | Oliva, l.() |
| 英文摘要 | We present results about photon-production in relativistic heavy-ion collisions. the main novelty of our study is the calculation of the contribution of the early-stage photons to the photon spectrum. the initial stage is modeled by an ensemble of classical gluon fields which decay to a quark-gluon plasma via the schwinger mechanism, and the evolution of the system is studied by coupling classical field equations to relativistic kinetic theory; photon production is then computed by including the pertinent collision processes into the collision integral. we find that the contribution of the early-stage photons to the direct photon spectrum is substantial for p(t) approximate to 2 gev and higher, the exact value depending on the collision energy; therefore, we identify this part of the photon spectrum as the sign of the early stage. moreover, the amount of photons produced during the early stage is not negligible with respect to those produced by a thermalized quark-gluon plasma: we support the idea that there is no dark age in relativistic heavy-ion collisions. |
| WOS关键词 | QUARK-GLUON PLASMA ; CHROMOELECTRIC-FLUX-TUBE ; TRANSPORT-EQUATIONS ; PARTICLE-PRODUCTION ; ANTIQUARK PLASMA ; MASS SINGULARITY ; THERMAL PHOTONS ; WIGNER OPERATOR ; ELLIPTIC FLOW ; FIELDS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Nuclear |
| 语种 | 英语 |
| WOS记录号 | WOS:000406536800008 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176944 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Oliva, L. |
| 作者单位 | 1.Univ Catania, Dept Phys & Astron, Via Santa Sofia 64, I-95123 Catania, Italy 2.INFN, Lab Nazl Sud, Via Santa Sofia 62, I-95123 Catania, Italy 3.Univ Chinese Acad Sci, Coll Phys, Yuquanlu 19A, Beijing 100049, Peoples R China 4.Univ Catania, Dept Phys & Astron, Via Santa Sofia 64, I-95125 Catania, Italy 5.INFN, Sez Catania, Via Santa Sofia 64, I-95123 Catania, Italy 6.Inst High Energy Phys, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Oliva, L.,Ruggieri, M.,Plumari, S.,et al. Photons from the early stages of relativistic heavy-ion collisions[J]. Physical review c,2017,96(1):10. |
| APA | Oliva, L.,Ruggieri, M.,Plumari, S.,Scardina, F.,Peng, G. X.,&Greco, V..(2017).Photons from the early stages of relativistic heavy-ion collisions.Physical review c,96(1),10. |
| MLA | Oliva, L.,et al."Photons from the early stages of relativistic heavy-ion collisions".Physical review c 96.1(2017):10. |
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