An experimental study of longitudinal and azimuthal correlations between pairs of mesons produced in pi /sup -/p collisions at 112 GeV /c and their possible interdependence

Azimuthal and longitudinal correlations between charged mesons have been studied on a large sample of four- and six-prong events produced in pi /sup -/p collisions at 11.2 GeV/c in the 2m CERN HBC. The effect introduced by the rho -meson has been investigated. The Goldhaber, Goldhaber, Lee and Pais...

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Detalles Bibliográficos
Autores principales: Quareni-Vignudelli, A, Attendoli, R, Calligarich, E, Caso, C, Costa, G, Di Caporiacco, G, Dolfini, R, Liotta, L, Lloyd, J L, Ratti, S, Teodoro, D, Thompson, G
Lenguaje:eng
Publicado: 1976
Materias:
Particle Physics - Phenomenology
Acceso en línea:http://cds.cern.ch/record/873956
Descripción
Sumario:Azimuthal and longitudinal correlations between charged mesons have been studied on a large sample of four- and six-prong events produced in pi /sup -/p collisions at 11.2 GeV/c in the 2m CERN HBC. The effect introduced by the rho -meson has been investigated. The Goldhaber, Goldhaber, Lee and Pais (GGLP) (1960) effect is observed and compared with available data on pi /sup -/p at 40 GeV/c and on pp in the momentum interval (100/400) GeV/c. The p-meson accounts for the azimuthal asymmetry of pi /sup +/ pi /sup -/ pairs, but not for the like-charge pair asymmetry. The longitudinal correlations, however, cannot be justified by the presence of the rho -meson. A short-range correlation survives for Delta y<or=1, due neither to the rho -meson nor to Bose-Einstein statistics. (11 refs).

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