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.
@article{arxiv.hep-ph/0701269,
title = {The pp -> K^+Sigma^+n cross section from missing mass spectra},
author = {A. Sibirtsev and J. Haidenbauer and H. -W. Hammer and Ulf-G. Meißner},
journal= {arXiv preprint arXiv:hep-ph/0701269},
year = {2008}
}