Journal Article

PreJuSER-59363

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The pp -> K+Sigma(+)n cross-section from missing-mass spectra

Sibirtsev, A.FZJ* ; Haidenbauer, J. ; Hammer, H.-W.FZJ* ; Meissner, U. G.FZJ*

2007
Springer Berlin

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Please use a persistent id in citations: http://hdl.handle.net/2128/10532  doi:10.1140/epja/i2007-10370-1

Abstract: We utilize existing inclusive data on K+-meson momentum spectra of the reaction pp -> K+X at T-p = 2.3-2.85 GeV to deduce total cross-sections for pp -> K(+)Z(+)n. The method used to extract those 'cross-sections is explained and discussed in detail. Our result for T-p = 2.85 GeV is consistent with the data point from a direct measurement at the same beam energy. The cross-section obtained for T-p = 2.3 GeV is with 13.7 +/- 2.3pb considerably smaller than the value found in a recent experiment by the COSY-11 Collaboration at a somewhat lower beam energy, indicating that the pp -> K+Sigma(+)n, reaction cross-section could exhibit a rather unusual energy dependence.

Keyword(s): p p: inclusive reaction ; p p: exclusive reaction ; K+: hadroproduction ; Sigma+: associated production ; channel cross section: energy dependence ; K+: momentum spectrum ; mass spectrum: missing-mass ; angular dependence ; data analysis method ; p Lambda: final-state interaction ; numerical calculations: interpretation of experiments ; p p --> K+ anything ; p p --> Sigma+ n anything ; 2.30-2.85 GeV-kin

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2007

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