Sv. Efremov et Ey. Paryev, SUBTHRESHOLD K- PRODUCTION IN PION-NUCLEUS REACTIONS, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 351(4), 1995, pp. 447-452
The inclusive subthreshold K- mesons production in charged pion-induce
d reactions is analyzed with respect to the one-step production proces
ses on the basis of an appropriate first collision model, which allows
one to take into account the various forms of an internal nucleon mom
entum 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 cr
oss sections of the K- production in pion-nucleon collisions are given
. Primary-pion energy dependence of the inclusive cross sections for K
- production in pi + C-collisions is calculated. The influence of the
uncertainties in the elementary K- production cross sections close to
the production threshold on the K- yield is explored.