The backward production of protons in the reaction π-A → p↓X is studied at 40 GeV incident energy with the different nuclear targets : C, Cu, Pb. The structure function shows a slope independent of the target atomic weight A and slightly dependent on the proton production angle. The invariant cross-section, normalized to the nucleon, increases with A up to a plateau which varies with the incident energy. Finally the ratios R = (F A/A)/(FC/AC) and n = ln(F A/FC)/ln(A/AC), where F = (E/p 2)(d2σ/(d p dΩ)), show a flat dependence on the momentum of the proton backward produced. These results are in favour of few-nucleon correlation models.

Study Of Backward Produced Protons In Pi- Nucleus Interactions At 40-gev/c. / V.V. Antipov, L.P. Chernenko, A.G. Galperin, O.A. Kropina, L.K. Lytkin, V.A. Moiseenko, V.A. Petrov, I.L. Pisarev, A.A. Tyapkin, I.M. Vasilevsky V.V. Vishnyakov, O.A. Zaimidoroga, E. Albini, G. Bellini, M. Di Corato, F. Palombo, M. Vittone. - In: LETTERE AL NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. - ISSN 0375-930X. - 43:7(1985), pp. 324-328.

Study Of Backward Produced Protons In Pi- Nucleus Interactions At 40-gev/c.

G. Bellini;M. Di Corato;F. Palombo;
1985

Abstract

The backward production of protons in the reaction π-A → p↓X is studied at 40 GeV incident energy with the different nuclear targets : C, Cu, Pb. The structure function shows a slope independent of the target atomic weight A and slightly dependent on the proton production angle. The invariant cross-section, normalized to the nucleon, increases with A up to a plateau which varies with the incident energy. Finally the ratios R = (F A/A)/(FC/AC) and n = ln(F A/FC)/ln(A/AC), where F = (E/p 2)(d2σ/(d p dΩ)), show a flat dependence on the momentum of the proton backward produced. These results are in favour of few-nucleon correlation models.
Settore FIS/04 - Fisica Nucleare e Subnucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/188582
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