Photons from the early stages of relativistic heavy-ion collisions

doi:10.1103/PhysRevC.96.014914

	Photons from the early stages of relativistic heavy-ion collisions
	Oliva, L; Plumari, S; Ruggieri, M; Peng GX(彭光雄); Greco, V; Peng, GX; Scardina, F
刊名	PHYSICAL REVIEW C
	2017
卷号	96 期号:1 页码:14914
ISSN号	2469-9985
DOI	10.1103/PhysRevC.96.014914
文献子类	Article
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.
电子版国际标准刊号	2469-9993
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
语种	英语
WOS记录号	WOS:000406536800008
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284493]
专题	高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Oliva, L,Plumari, S,Ruggieri, M,et al. Photons from the early stages of relativistic heavy-ion collisions[J]. PHYSICAL REVIEW C,2017,96(1):14914.
APA	Oliva, L.,Plumari, S.,Ruggieri, M.,彭光雄.,Greco, V.,...&Scardina, F.(2017).Photons from the early stages of relativistic heavy-ion collisions.PHYSICAL REVIEW C,96(1),14914.
MLA	Oliva, L,et al."Photons from the early stages of relativistic heavy-ion collisions".PHYSICAL REVIEW C 96.1(2017):14914.