π+ Meson interaction on 4He at 120, 145 and 165 MeV
1980; Elsevier BV; Volume: 340; Issue: 2 Linguagem: Inglês
10.1016/0375-9474(80)90281-x
ISSN1873-1554
AutoresF. Balestra, M.P. Bussa, L. Busso, R. Garfagnini, G. Piragino, C. Guaraldo, A. Maggiora, R. Scrimaglio, I.V. Falomkin, G.B. Pontecorvo, Yu.A. Shcherbakov,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoThe total cross sections and the differential cross sections of π+-4He elastic and inelastic reactions at Eπ=120, 145 and 165 MeV have been measured using a 38 cm diffusion cloud chamber in a magnetic field exposed to the Frascati Laboratories' pion beam. Total π+ track lengths of (2141 ± 10) × 103 cm, (3435 ± 10) × 103 cm and (2413 ± 10) × 103 cm were measured at the three considered energies, respectively. The elastic cross-section data are in good agreement with the results of the Dubna-Torino collaboration. The total inelastic cross sections have been obtained taking into account the contributions from all the inelastic channels. The analysis of the various inelastic processes has allowed us to distinguish five main reaction mechanisms, which compare reasonably with the existing data and with the models for pion-light-nuclei interactions.
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