Spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c

A spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c has shown that apart from the mass enhancements associated with the known resonances Delta /sup +/(1238), N*(1520) and N*(1688), there is an enhancement peaked at M(n pi /sup...

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Autor principal: Sotiriou, D
Lenguaje:eng
Publicado: 1976
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(76)90147-4
http://cds.cern.ch/record/874039
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author Sotiriou, D
author_facet Sotiriou, D
author_sort Sotiriou, D
collection CERN
description A spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c has shown that apart from the mass enhancements associated with the known resonances Delta /sup +/(1238), N*(1520) and N*(1688), there is an enhancement peaked at M(n pi /sup +/) approximately=1.35 GeV, approximately 0.2 GeV wide. For masses below M(n pi /sup +/) approximately=1.35 GeV this enhancement is predominantly due to J/sup P/=1/2/sup -/ states, while above, the J/sup P/=1/2/sup +/ states predominate. The presence of J/sup P/=1/2/sup -/ states indicates the rule Delta P=(-1)/sup Delta J/ is strongly violated in the diffractive process N to N pi , and hence it cannot be considered a specific characteristic of all diffractive processes. (20 refs).
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spelling cern-8740392019-09-30T06:29:59Zdoi:10.1016/0550-3213(76)90147-4http://cds.cern.ch/record/874039engSotiriou, DSpin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/cParticle Physics - PhenomenologyA spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c has shown that apart from the mass enhancements associated with the known resonances Delta /sup +/(1238), N*(1520) and N*(1688), there is an enhancement peaked at M(n pi /sup +/) approximately=1.35 GeV, approximately 0.2 GeV wide. For masses below M(n pi /sup +/) approximately=1.35 GeV this enhancement is predominantly due to J/sup P/=1/2/sup -/ states, while above, the J/sup P/=1/2/sup +/ states predominate. The presence of J/sup P/=1/2/sup -/ states indicates the rule Delta P=(-1)/sup Delta J/ is strongly violated in the diffractive process N to N pi , and hence it cannot be considered a specific characteristic of all diffractive processes. (20 refs).oai:cds.cern.ch:8740391976
spellingShingle Particle Physics - Phenomenology
Sotiriou, D
Spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c
title Spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c
title_full Spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c
title_fullStr Spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c
title_full_unstemmed Spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c
title_short Spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 GeV/c
title_sort spin-parity analysis of the n pi /sup +/ system produced in the reaction pi /sup +/p to pi /sup +/ pi /sup +/n at 16 gev/c
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0550-3213(76)90147-4
http://cds.cern.ch/record/874039
work_keys_str_mv AT sotirioud spinparityanalysisofthenpisupsystemproducedinthereactionpisupptopisuppisupnat16gevc

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