Resonance production in six prong pp annihilations at 25 GeV/c

This paper presents a study of 5000 6-prong pionic annihilations obtained in the CERN 2m hydrogen bubble chamber, and of a larger sample containing 1287 6 pi events. There is clear evidence of abundant rho and omega production. Partial cross sections for various resonance channels obtained from maxi...

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Detalles Bibliográficos
Autores principales: Clayton, J, Mason, P, Muirhead, William Hugh, Renton, P B, Rigopoulos, R
Lenguaje:eng
Publicado: 1972
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(72)90102-2
http://cds.cern.ch/record/875605
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author Clayton, J
Mason, P
Muirhead, William Hugh
Renton, P B
Rigopoulos, R
author_facet Clayton, J
Mason, P
Muirhead, William Hugh
Renton, P B
Rigopoulos, R
author_sort Clayton, J
collection CERN
description This paper presents a study of 5000 6-prong pionic annihilations obtained in the CERN 2m hydrogen bubble chamber, and of a larger sample containing 1287 6 pi events. There is clear evidence of abundant rho and omega production. Partial cross sections for various resonance channels obtained from maximum likelihood fits, are given. Evidence is presented for the production of two resonances at masses of 1.7 and 1.8 GeV in the 4 pi mass spectrum of the 6 pi annihilations. In the 7 pi channel A/sub 2/ and omega cuts applied to the 3 pi /sup +or-/ 2 pi /sup -or+/ pi /sup o/ effective mass plot indicate the production of resonances at masses of 2160+or-20 and 2320+or-20 MeV. (7 refs).
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1972
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spelling cern-8756052019-09-30T06:29:59Zdoi:10.1016/0550-3213(72)90102-2http://cds.cern.ch/record/875605engClayton, JMason, PMuirhead, William HughRenton, P BRigopoulos, RResonance production in six prong pp annihilations at 25 GeV/cParticle Physics - PhenomenologyThis paper presents a study of 5000 6-prong pionic annihilations obtained in the CERN 2m hydrogen bubble chamber, and of a larger sample containing 1287 6 pi events. There is clear evidence of abundant rho and omega production. Partial cross sections for various resonance channels obtained from maximum likelihood fits, are given. Evidence is presented for the production of two resonances at masses of 1.7 and 1.8 GeV in the 4 pi mass spectrum of the 6 pi annihilations. In the 7 pi channel A/sub 2/ and omega cuts applied to the 3 pi /sup +or-/ 2 pi /sup -or+/ pi /sup o/ effective mass plot indicate the production of resonances at masses of 2160+or-20 and 2320+or-20 MeV. (7 refs).oai:cds.cern.ch:8756051972
spellingShingle Particle Physics - Phenomenology
Clayton, J
Mason, P
Muirhead, William Hugh
Renton, P B
Rigopoulos, R
Resonance production in six prong pp annihilations at 25 GeV/c
title Resonance production in six prong pp annihilations at 25 GeV/c
title_full Resonance production in six prong pp annihilations at 25 GeV/c
title_fullStr Resonance production in six prong pp annihilations at 25 GeV/c
title_full_unstemmed Resonance production in six prong pp annihilations at 25 GeV/c
title_short Resonance production in six prong pp annihilations at 25 GeV/c
title_sort resonance production in six prong pp annihilations at 25 gev/c
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0550-3213(72)90102-2
http://cds.cern.ch/record/875605
work_keys_str_mv AT claytonj resonanceproductioninsixprongppannihilationsat25gevc
AT masonp resonanceproductioninsixprongppannihilationsat25gevc
AT muirheadwilliamhugh resonanceproductioninsixprongppannihilationsat25gevc
AT rentonpb resonanceproductioninsixprongppannihilationsat25gevc
AT rigopoulosr resonanceproductioninsixprongppannihilationsat25gevc

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