Compatibility of old and new pi N charge-exchange results

Results for d sigma /dt( pi /sup -/p to pi /sup 0/n) for 5-18 and 20-101 GeV/c from CERN and FNAL respectively, are compatible with a single set of rho -Regge pole parameters, contrary to first appearances. These data are simultaneously fitted to a rho + rho ' parametrization, together with pol...

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Detalles Bibliográficos
Autores principales: Barger, V, Phillips, R J N
Lenguaje:eng
Publicado: 1974
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(74)90530-9
http://cds.cern.ch/record/873510
Descripción
Sumario:Results for d sigma /dt( pi /sup -/p to pi /sup 0/n) for 5-18 and 20-101 GeV/c from CERN and FNAL respectively, are compatible with a single set of rho -Regge pole parameters, contrary to first appearances. These data are simultaneously fitted to a rho + rho ' parametrization, together with polarizations, cross section differences Delta sigma /sub t/= sigma ( pi /sup -/p)/sup -/( pi /sup +/p), and continuous moment sum rules. A small discrepancy with Delta sigma /sub t/ remains, possible to systematic error or a 1/2% charge- symmetry breakdown. (10 refs).

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