Abstract
The inclusive subthresholdK − mesons production in charged pion-induced reactions is analyzed with respect to the one-step production processes on the basis of an appropriate first collision model, which allows one to take into account the various forms of an internal nucleon momentum distribution. Free elementary production processes are described by the phase space calculations normalized to the corresponding total experimental cross sections. Simple parametrizations for the total cross sections of theK − production in pion-nucleon collisions are given. Primary-pion energy dependence of the inclusive cross sections for K− production inπ + C− collisions is calculated. The influence of the uncertainties in the elementaryK − production cross sections close to the production threshold on theK − yield is explored.
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The authors acknowledge stimulating discussions with V. Koptev on the initial stage of this study.
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Efremov, S.V., Paryev, E.Y. Subthreshold K− production in pion-nucleus reactions. Z. Physik A - Hadrons and Nuclei 351, 447–452 (1995). https://doi.org/10.1007/BF01291150
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DOI: https://doi.org/10.1007/BF01291150