Strangeness production in proton-proton collisions close to threshold

被引：2
|
作者：
Wolke, M
Adam, HH
Budzanowski, A
Czyzykiewicz, R
Grzonka, D
Janusz, M
Jarczyk, L
Kamys, B
Khoukaz, A
Kilian, K
Kowina, P
Lister, T
Moskal, P
Oelert, W
Rozek, T
Santo, R
Schepers, G
Sefzick, T
Siemaszko, M
Smyrski, J
Steltenkamp, S
Strzalkowski, A
Winter, P
Wüstner, P
Zipper, W
机构：
[1] Forschungszentrum Julich, IKP, D-52425 Julich, Germany
[2] Forschungszentrum Julich, ZEL, D-52425 Julich, Germany
[3] Univ Munster, IKP, D-48149 Munster, Germany
[4] Inst Nucl Phys, PL-31342 Krakow, Poland
[5] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland
[6] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland
来源：
NUCLEAR PHYSICS A | 2003年 / 721卷
关键词：
D O I：
10.1016/S0375-9474(03)01152-7
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Exclusive data on the reactions pp --> ppK(+)K(-) and pp --> pK(+Lambda)/Sigma(0) have been taken at the cooler synchrotron COSY close to threshold. At equal excess energies, an enhancement of the Lambda/Sigma(0) ratio by one order of magnitude has been observed compared to data at higher excess energies. New results obtained at the COSY-11 facility explore the transition region between this low-energy Sigma(0) suppression and excess energies of 60 MeV. A first total cross section for elementary antikaon production below the phi threshold has been determined, two orders of magnitude smaller compared to kaon production at the same excess energy.
引用
收藏
页码：683C / 686C
页数：4
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