A partial-wave analysis of the neutral 3 pi system produced in the reaction pi /sup -/p to ( pi /sup +/ pi /sup -/ pi /sup 0/)n at 12 and 15 GeV/c

Data on the charge-exchange reaction pi /sup -/p to ( pi /sup +/ pi /sup -/ pi /sup 0/)n have been taken at beam momenta of 12 and 15 GeV /c, using the CERN Omega Multiparticle Spectrometer. A partial-wave analysis has been made of the (3 pi )/sup 0/ system. Both natural and unnatural spin-parity pr...

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Detalles Bibliográficos
Autores principales: Corden, M J, Alexander, G, Bellamy, E H, Corbett, I F, Dagan, S, Dowell, John D, Esterling, R J, Garvey, J, Gnat, Y, Green, M G, Harnew, N, Jobes, M, Kenyon, I R, Lipman, Norman H, Lister, J B, Lister, J R, Litchfield, P J, Mawson, J, McMahon, T, Robertson, A W, Stacey, B J, Strong, J A, Sumorok, K, Thomas, D H
Lenguaje:eng
Publicado: 1977
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(78)90016-0
http://cds.cern.ch/record/879175
Descripción
Sumario:Data on the charge-exchange reaction pi /sup -/p to ( pi /sup +/ pi /sup -/ pi /sup 0/)n have been taken at beam momenta of 12 and 15 GeV /c, using the CERN Omega Multiparticle Spectrometer. A partial-wave analysis has been made of the (3 pi )/sup 0/ system. Both natural and unnatural spin-parity production was observed. The natural parity states can be identified with established resonances. In addition a natural spin-parity enhancement is observed at a mass of about 2 GeV/c /sup 2/ with J/sup P/=4/sup +/ preferred. This effect is called the A /sub 2/*(2030). The unnatural spin-parity production found is consistent with reggeized Deck model predictions. No unambiguous A/sub 1/ or A/sub 3/ production is observed. (15 refs).

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