2001/07/31 by E. L. Bratkovskaya, E L Bratkovskaya, V Yu Grishina +7
Physics and Astronomy · #Cross section (physics) #High-Energy Particle Collisions Research #Invariant mass #Isospin #Lagrangian #Meson #Nuclear physics research studies #Production (economics) #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1088/0954-3899/28/9/307
published as J.Phys.G28:2423-2442,2002 · 26 pages, including 11 eps figures, to be bublished in J. Phys. G
arxiv created 2002/07/12 · openalex publication_date 2002/08/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We investigate the cross section for the reaction NN → NNa 0 near the threshold and at medium energies. An effective Lagrangian approach with a one-pion exchange is applied to analyse different contributions to the cross section for different isospin channels. The Reggeon exchange mechanism is also considered. The results are used to calculate the contribution of the a 0 meson to the cross sections and invariant K mass distributions of the reactions pp → pnK + 0 and pp → ppK + K − . We found that the experimental observation of a + 0 mesons in the reaction pp → pnK + 0 is much more promising than the observation of a 0 0 mesons in the reaction pp → pp K + K − .