The isospin dependent nucleon-nucleon inelastic cross section in the nuclear medium

doi:10.1016/j.physletb.2017.09.013

	The isospin dependent nucleon-nucleon inelastic cross section in the nuclear medium
	Li, Qingfeng 1,2; Li, Zhuxia 3
刊名	PHYSICS LETTERS B
	2017-10-10
卷号	773 页码:557-562
ISSN号	0370-2693
DOI	10.1016/j.physletb.2017.09.013
英文摘要	The calculation of the energy-, density-, and isospin-dependent Delta production cross sections in nucleonnucleon (NN) scattering sigma*(NN -> N Delta) has been performed within the framework of the relativistic BUU approach. The N Delta cross sections are calculated in Born approximation taking into account the effective mass splitting of the nucleons and Delta s in asymmetric matter. Due to the different mass splitting for neutron, proton and differently charged Delta s, it is shown that, similar to the NN elastic ones, the reductions of N Delta inelastic cross sections in isospin-asymmetric nuclear medium are different from each other for all the individual channels and the effect is largest and of opposite sign for the Delta(++) and Delta(-) states. This approach is also compared to calculations without effective mass splitting and with splitting derived from Dirac-Brueckerner (DB) calculations. The isospin dependence of the N Delta cross sections is expected to influence the production of pi(+) and pi(-) mesons as well as their yield ratio, and thus affect the use of the latter quantity as a probe of the stiffness of the symmetry energy at supranormal densities. (C) 2017 The Authors. Published by Elsevier B.V.
资助项目	computing servers C3S2 in Huzhou University ; LOEWE-CSC in FIAS institute of Frankfurt University ; National Natural Science Foundation of China[11375062] ; National Natural Science Foundation of China[11547312] ; National Natural Science Foundation of China[11275052] ; National Natural Science Foundation of China[11475262] ; National Natural Science Foundation of China[11475004] ; National Natural Science Foundation of China[11647306]
WOS关键词	HEAVY-ION COLLISIONS ; DIRAC-BRUECKNER APPROACH ; PION-PRODUCTION ; MATTER ; ENERGY
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000413294200083
资助机构	computing servers C3S2 in Huzhou University ; LOEWE-CSC in FIAS institute of Frankfurt University ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45986]
专题	中国科学院近代物理研究所
通讯作者	Li, Qingfeng
作者单位	1.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 3.China Inst Atom Energy, Beijing 102413, Peoples R China
推荐引用方式 GB/T 7714	Li, Qingfeng,Li, Zhuxia. The isospin dependent nucleon-nucleon inelastic cross section in the nuclear medium[J]. PHYSICS LETTERS B,2017,773:557-562.
APA	Li, Qingfeng,&Li, Zhuxia.(2017).The isospin dependent nucleon-nucleon inelastic cross section in the nuclear medium.PHYSICS LETTERS B,773,557-562.
MLA	Li, Qingfeng,et al."The isospin dependent nucleon-nucleon inelastic cross section in the nuclear medium".PHYSICS LETTERS B 773(2017):557-562.