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	Photons from the early stages of relativistic heavy-ion collisions
	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
	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
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000406536800008
内容类型	期刊论文
URI标识	http://www.corc.org.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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