The pp -> K^+Sigma^+n cross section from missing mass spectra

Details The pp -> K^+Sigma^+n cross section from missing mass spectra The pp -> K^+Sigma^+n cross section from missing mass spectra

2007-01-31

arxiv.org/abs/hep-ph/0701269v1

Eur.Phys.J.A32:229-241,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 8 figures

Scientific paper

10.1140/epja/i2007-10370-1

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^+\Sigma^+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\pm2.3 \mu b 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.

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