NDLI: Energy dependence of the Λ/Σproduction cross-section ratio in p-p interactions

Content Provider	Springer Nature Link
Author	Kowina, P. Wolke, M. Adam, H. H. Budzawski, A. Czyżykiewicz, R. Grzonka, D. Haidenbauer, J. Janusz, M. Jarczyk, L. Khoukaz, A. Kilian, K. Moskal, P. Oelert, W. Piskor Ignatowicz, C. Przerwa, J. Quentmeier, C. Rożek, T. Santo, R. Schepers, G. Sefzick, T. Siemaszko, M. Smyrski, J. Steltenkamp, S. Strzałkowski, A. Winter, P. Wüstner, P. Zipper, W.
Copyright Year	2004
Abstract	The production of the Λ- and Σ0-hyperons has been measured via the pp → pK+Λ/Σ0 reaction at the internal COSY-11 facility in the excess energy range between 14 and 60 MeV. The transition of the Λ/Σ0 cross-section ratio from about 28 at Q≤13 MeV to the high-energy level of about 2.5 is covered by the data showing a strong decrease of the ratio between 10 and 20 MeV excess energy. Effects from the final-state interactions in the p-Σ0 channel seem to be much smaller than in the p-Λ channel. Estimates of the effective range parameters are given for the NΛ and the NΣ systems.
Starting Page	293
Ending Page	299
Page Count	7
File Format	PDF
ISSN	14346001
Journal	The European Physical Journal A - Hadrons and Nuclei
Volume Number	22
Issue Number	2
e-ISSN	1434601X
Language	English
Publisher	Società Italiana di Fisica
Publisher Date	2004-11-03
Publisher Place	Bologna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Elementary Particles and Nuclei Nuclear Physics, Heavy Ions, Hadrons Nuclear Fusion
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics

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Energy dependence of the Λ/Σproduction cross-section ratio in p-p interactions