Observation of diffraction excitation in pp to (p pi /sup +/ pi /sup - /)+X at the CERN-ISR and tests of limiting fragmentation

In a single-arm magnetic spectrometer experiment at the CERN Intersecting Storage Rings (ISR), a prominent diffractive enhancement is observed for inclusive production of (p pi /sup +/ pi /sup -/) systems near x approximately 1 at square root s=53 and 35 GeV. In testing limiting fragmentation and sc...

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Detalles Bibliográficos
Autores principales: Baksay, L, Böhm, A, Ellis, R, Föth, H, Lockman, W, Medinnis, M, Meyer, T, Naroska, Beate, Rander, J, Schlein, P E, Staude, A, Strolin, P, Trippe, T, Webb, R
Lenguaje:eng
Publicado: 1975
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(75)90223-3
http://cds.cern.ch/record/873306
Descripción
Sumario:In a single-arm magnetic spectrometer experiment at the CERN Intersecting Storage Rings (ISR), a prominent diffractive enhancement is observed for inclusive production of (p pi /sup +/ pi /sup -/) systems near x approximately 1 at square root s=53 and 35 GeV. In testing limiting fragmentation and scaling for this system, inclusive p pi /sup +/ pi /sup -/ diffractive excitation into a fixed invariant mass range is found to possess a cross-section independent of s to within (3+or-5)%. The main component in the (p pi /sup +/ pi /sup -/) system is Delta (1236) pi , with a charge structure compatible with the break-up of an isotopic spin /sup 1///sub 2/ system. (10 refs).

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