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

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^+Σ^+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 μb 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^+Σ^+n reaction cross section could exhibit a rather unusual energy dependence.

12 pages, 8 figures

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Cited by in corpus (8)

• Baryonic resonances close to the Kbar-N threshold: the case of Sigma(1385)^+ in pp collisions
• High resolution study of the Lambda p final state interaction in the reaction p + p -> K+ + (Lambda p)
• The energy dependence of the pp->K+ n Sigma+ reaction close to threshold
• The pp->K+ n Sigma+ reaction near threshold
• Cross section of the $pp\to K^{+}{\Sigma }^{+}n$ reaction close to threshold
• Parametrization of cross sections for elementary hadronic collisions involving strange particles
• Strangeness Production Process $pp\to n{K}^{+}{\Sigma }^{+}$ within Resonance Model
• The measurement of the pp->K+ n Sigma+ reaction near threshold