In-medium kaon and antikaon production and antikaon condensation in neutron star matter

	In-medium kaon and antikaon production and antikaon condensation in neutron star matter
	Gu, JF ; Guo, H ; Zhou, R ; Liu, B ; Li, XG ; Liu, YX
刊名	ASTROPHYSICAL JOURNAL
	2005-03-20
卷号	622 页码:549-555
关键词	elementary particles nuclear reactions, nucleosynthesis, abundances supernovae : general
ISSN号	0004-637X
英文摘要	Kaon and antikaon production and antikaon condensation in neutron star matter are investigated in a chiral hadronic model proposed by Furnstahl, Tang, K Serot (FST model). Results calculated in the FST model are compared with those in the nonlinear Walecka model. Antikaon condensation decreases the maximum masses of neutron stars with a composition of (n, p, e, mu, K) compared with those of (n, p, e, mu), without antikaon condensation. The FST model predicts that Sigma(+) and Xi(0) do not occur in neutron stars. Moreover, it has been shown that antikaon condensation in the FST model does not exist in neutron star matter with compositions of both (n, p, e, mu, K, H) if hyperons are considered and (n, p, e, mu, nu(e), K, H) if hyperons plus neutrino tripping are considered. The Q-values for K+ and K- production are not sensitive to antikaon condensation and the presence of hyperons. In-medium effects decrease the Q-values for NN -> NNK+K- and Lambda N -> NNK- and increase those for NN -> N Lambda K+, K- p -> Lambda pi(0), and K- n -> Lambda pi(-) as the density of neutron star matter increases.
WOS关键词	MEAN-FIELD-THEORY ; NONLINEAR SIGMA-TERM ; OMEGA-TERM ; NUCLEI ; MODEL
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	UNIV CHICAGO PRESS
WOS记录号	WOS:000227740900045
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/25140]
专题	中国科学院近代物理研究所
通讯作者	Guo, H
作者单位	1.Peking Univ, Dept Tech Phys, Beijing 100871, Peoples R China 2.Peking Univ, MOE Lab Heavy Ion Phys, Beijing 100871, Peoples R China 3.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China 4.Inst High Energy Phys, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Gu, JF,Guo, H,Zhou, R,et al. In-medium kaon and antikaon production and antikaon condensation in neutron star matter[J]. ASTROPHYSICAL JOURNAL,2005,622:549-555.
APA	Gu, JF,Guo, H,Zhou, R,Liu, B,Li, XG,&Liu, YX.(2005).In-medium kaon and antikaon production and antikaon condensation in neutron star matter.ASTROPHYSICAL JOURNAL,622,549-555.
MLA	Gu, JF,et al."In-medium kaon and antikaon production and antikaon condensation in neutron star matter".ASTROPHYSICAL JOURNAL 622(2005):549-555.