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Hard-photon flow and photon-photon correlation in intermediate-energy heavy-ion collisions
Ma, YG(马余刚); Liu, GH(刘桂华); Cai, XZ(蔡翔舟); Fang, DQ(方德清); Guo, W(郭威); Shen, WQ(沈文庆); Tian, WD(田文栋); Wang, HW(王宏伟)
2012
Source PublicationPHYSICAL REVIEW C
ISSN0556-2813
Volume85Issue:2
AbstractHard photons emitted from energetic heavy-ion collisions are very interesting since they do not experience nuclear interaction, and therefore they are useful to explore properties of nuclear matter. We investigated hard-photon production and its properties in intermediate-energy heavy-ion collisions with the help of the Blotzmann-Uehling-Ulenbeck model. Two components of hard photons are discussed: direct and thermal. The positive directed flow parameter and negative elliptic flow parameter of direct photons are demonstrated and they are anticorrelated to the flows of free protons. The dependencies of hard-photon production and anisotropic parameters on impact parameter, beam energy, nuclear equation of state, and symmetry energy are also discussed. Furthermore, we investigated the two-photon momentum correlation function, from which the space-time structure information of the photon source could be extracted, as well as the two-photon azimuthal correlation, which could provide another good method to determine the elliptic flow parameter v(2) of direct hard photons.
Language英语
Funding Project应物所项目组
WOS IDWOS:000300662900003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13179
Collection中科院上海应用物理研究所2011-2020年
Recommended Citation
GB/T 7714
Ma, YG,Liu, GH,Cai, XZ,et al. Hard-photon flow and photon-photon correlation in intermediate-energy heavy-ion collisions[J]. PHYSICAL REVIEW C,2012,85(2).
APA Ma, YG.,Liu, GH.,Cai, XZ.,Fang, DQ.,Guo, W.,...&Wang, HW.(2012).Hard-photon flow and photon-photon correlation in intermediate-energy heavy-ion collisions.PHYSICAL REVIEW C,85(2).
MLA Ma, YG,et al."Hard-photon flow and photon-photon correlation in intermediate-energy heavy-ion collisions".PHYSICAL REVIEW C 85.2(2012).
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