CERN Accelerating science

Article
Title A thermodynamical analysis of the charged-pion momentum spectra from the annihilations pp to pi /sup +or-/K/sub s//sup 0/X/sup -or+/ at low energy
Author(s) Angelini, C ; Bertanza, L ; Bigi, A ; Casali, R ; Defoix, C ; Ladrón de Guevara, P ; Pazzi, R ; Petitjean, P ; Petri, C ; Romani, E
Affiliation (Istituto di Fisica, Univ Pisa, Pisa, Italy)
Publication 1977
In: Nuovo Cimento, Lett. 19 ser.2, 8 (1977) pp.283-6
Subject category Particle Physics - Phenomenology
Abstract The data are obtained from p interactions in the CERN 81 cm hydrogen bubble chamber at several momenta between 0.3 and 0.7 GeV/c corresponding to (s)=3.80 GeV/sup 2/. About 7000 events with one visible K/sub s//sup 0/ at least were recorded corresponding to a sample of about 10/sup 4/ weighted charged pions. The results indicate that at small energies or, in any case, when a few intermediate resonances are expected to dominate, a statistical description as the thermodynamical one, can be still adequate, provided that the contributions of such resonances are incorporated in the model. (3 refs).



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