Wide-acceptance measurement of the K-/K+ ratio from Ni plus Ni collisions at 1.91A GeV

doi:10.1103/PhysRevC.99.014904

	Wide-acceptance measurement of the K-/K+ ratio from Ni plus Ni collisions at 1.91A GeV
	Piasecki, K.14; Herrmann, N.13; Averbeck, R.12; Andronic, A.12; Barret, V.10,11; Basrak, Z.9; Bastid, N.10,11; Benabderrahmane, M. L.13; Berger, M.7,8; Buehler, P.6
刊名	PHYSICAL REVIEW C
	2019-01-15
卷号	99 页码:8
ISSN号	2469-9985
DOI	10.1103/PhysRevC.99.014904
英文摘要	The FOPI Collaboration at the GSI SIS-18 synchrotron measured charged kaons from central and semicentral collisions of Ni+Ni at a beam energy of 1.91A GeV. We present the distribution of the K-/K+ ratio on the energy vs polar angle plane in the nucleon-nucleon center-of-mass frame, with and without subtraction of the contribution of phi(1020) meson decays to the K- yield. The acceptance of the current experiment is substantially wider compared to the previous measurement of the same colliding system. The ratio of K- to K+ energy spectra is expected to be sensitive to the in-medium modifications of basic kaon properties like mass. Recent results obtained by the HADES Collaboration at 1.23A and 1.76A GeV indicate that after inclusion of the phi meson decay contribution to the K- production no difference between the slopes of the K- and K+ energy spectra is observed within uncertainties. For our data a linear fit to this ratio obtained after subtraction of the phi meson contribution still shows a decrease with kinetic energy, although a constant value cannot be rejected. The contribution of A(1520) -> pK(-) decays estimated from fitting the thermal model to the experimental yields appears to be another factor of moderate relevance.
资助项目	German BMBF[05P12VHFC7] ; German BMBF[05P12RFFCQ] ; National Research Foundation of Korea (NRF)[2018R1A5A1025563] ; Polish Ministry of Science and Higher Education[DFG/34/2007] ; GSI ; IN2P3/CEA ; HIC for FAIR ; Hungarian OTKA[71989] ; NSFC[11079025] ; DAAD[PPP D/03/44611] ; DFG[446-KOR-113/76/04] ; EU[RII3-CT-2004-506078]
WOS关键词	HEAVY-ION COLLISIONS ; CHARGED PIONS ; KAON ; STRANGENESS
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000455828700003
资助机构	German BMBF ; National Research Foundation of Korea (NRF) ; Polish Ministry of Science and Higher Education ; GSI ; IN2P3/CEA ; HIC for FAIR ; Hungarian OTKA ; NSFC ; DAAD ; DFG ; EU
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/67178]
专题	中国科学院近代物理研究所近代物理研究所_实验物理中心
作者单位	1.Univ Strasbourg, Strasbourg, France 2.Korea Univ, Seoul, South Korea 3.Inst Theoret & Expt Phys, Moscow, Russia 4.RMKI, Wigner RCP, Budapest, Hungary 5.Univ Split, Fac Sci, Split, Croatia 6.Austrian Acad Sci, Stefan Meyer Inst Subatomare Phys, Vienna, Austria 7.Tech Univ Munich, Phys Dept, E62, Garching, Germany 8.Tech Univ Munich, Excellence Cluster Universe, Garching, Germany 9.Rudjer Boskovic Inst, Zagreb, Croatia 10.Univ Blaise Pascal, Clermont Ferrand, France
推荐引用方式 GB/T 7714	Piasecki, K.,Herrmann, N.,Averbeck, R.,et al. Wide-acceptance measurement of the K-/K+ ratio from Ni plus Ni collisions at 1.91A GeV[J]. PHYSICAL REVIEW C,2019,99:8.
APA	Piasecki, K..,Herrmann, N..,Averbeck, R..,Andronic, A..,Barret, V..,...&Zmeskal, J..(2019).Wide-acceptance measurement of the K-/K+ ratio from Ni plus Ni collisions at 1.91A GeV.PHYSICAL REVIEW C,99,8.
MLA	Piasecki, K.,et al."Wide-acceptance measurement of the K-/K+ ratio from Ni plus Ni collisions at 1.91A GeV".PHYSICAL REVIEW C 99(2019):8.