Peripheral pn production and decay angular distributions in the reaction pi /sup -/p to (pn)p at 12 GeV/c incident momentum

The reaction pi /sup -/p to (pn)p/sub s/, where p/sub s/ is a slow proton, was measured at 12 GeV/c incident momentum with the CERN-OMEGA spectrometer. Both antiproton and proton were identified uniquely by electronics information. 1844 events with four-momentum transfer squared in the range 0.13<...

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Detalles Bibliográficos
Autores principales: Ghidini, B, Bröring, J, Cantore, A, Di Corato, M, Donald, R A, Eades, John, Edwards, D N, Edwards, M E, French, Bernard R, Fry, J R, Houlden, M A, Mandelli, L, Moebes, J P, Müller, K, Navach, F, Palano, A, Palazzi-Cerrina, C, Paul, E, Picciarelli, V, Renneberg, W, Rühmer, W, Smith, I, Zito, G
Lenguaje:eng
Publicado: 1978
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(78)90469-8
http://cds.cern.ch/record/879203
Descripción
Sumario:The reaction pi /sup -/p to (pn)p/sub s/, where p/sub s/ is a slow proton, was measured at 12 GeV/c incident momentum with the CERN-OMEGA spectrometer. Both antiproton and proton were identified uniquely by electronics information. 1844 events with four-momentum transfer squared in the range 0.13<or= mod t mod <or=0.33 GeV/sup 2/ and with invariant masses M(pn) up to 2.5 GeV were obtained. The corresponding cross section in this t range is determined to be sigma =4+or-0.4 mu b. Extrapolating the differential cross section over the whole t range assuming d sigma /dt approximately exp(5.3 t) a cross section of sigma =9.3+or-2.0 mu b is estimated. Comparison is made with data on pi /sup -/p to (pp)n/sub s/ (where n/sub s/ is a slow neutron) in the same t range. (12 refs).

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