QCD calculation of J/psi + $\gamma$ mass distributions

We compute the J/psi+gamma invariant-mass distributions from the QCD subprocess g + g --> J/psi+gamma. At large masses, this subprocess is the dominant mechanism for J/psi+gamma production, and data could provide a good test of QCD. The mass distribution peaks at relatively small masses (3.4 - 4....

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Detalles Bibliográficos
Autores principales: Berger, Edmond L., Sridhar, K.
Lenguaje:eng
Publicado: 1993
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(93)91022-F
http://cds.cern.ch/record/252582
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author Berger, Edmond L.
Sridhar, K.
author_facet Berger, Edmond L.
Sridhar, K.
author_sort Berger, Edmond L.
collection CERN
description We compute the J/psi+gamma invariant-mass distributions from the QCD subprocess g + g --> J/psi+gamma. At large masses, this subprocess is the dominant mechanism for J/psi+gamma production, and data could provide a good test of QCD. The mass distribution peaks at relatively small masses (3.4 - 4.0 GeV) and the subprocess could, therefore, represent a significant QCD background to J/psi+gamma decay of heavier charmonia. We also analyze the J/psi angular distribution in the J/psi+gamma rest frame.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1993
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spelling cern-2525822023-03-14T20:46:28Zdoi:10.1016/0370-2693(93)91022-Fhttp://cds.cern.ch/record/252582engBerger, Edmond L.Sridhar, K.QCD calculation of J/psi + $\gamma$ mass distributionsParticle Physics - PhenomenologyWe compute the J/psi+gamma invariant-mass distributions from the QCD subprocess g + g --> J/psi+gamma. At large masses, this subprocess is the dominant mechanism for J/psi+gamma production, and data could provide a good test of QCD. The mass distribution peaks at relatively small masses (3.4 - 4.0 GeV) and the subprocess could, therefore, represent a significant QCD background to J/psi+gamma decay of heavier charmonia. We also analyze the J/psi angular distribution in the J/psi+gamma rest frame.We compute the J/psi+gamma invariant-mass distributions from the QCD subprocess g + g --> J/psi+gamma. At large masses, this subprocess is the dominant mechanism for J/psi+gamma production, and data could provide a good test of QCD. The mass distribution peaks at relatively small masses (3.4 - 4.0 GeV) and the subprocess could, therefore, represent a significant QCD background to J/psi+gamma decay of heavier charmonia. We also analyze the J/psi angular distribution in the J/psi+gamma rest frame.We compute the J / Ψ + γ invariant-mass distribution from the QCD subprocess g + g → J / Ψ + γ . At large masses, this subprocess is the dominant mechanism for J / Ψ + γ production, and data could provide a good test of QCD. The mass distribution peaks at relatively small masses (3.4–4.0 GeV) and the subprocess could, therefore, represent a significant QCD background to J / Ψ + γ decay of heavier charmonia. We also analyze the J / Ψ + γ rest frame.hep-ph/9308261CERN-TH-6974-93ANL-HEP-PR-93-64ANL-HEP-PR-93-64CERN-TH-6974-93oai:cds.cern.ch:2525821993
spellingShingle Particle Physics - Phenomenology
Berger, Edmond L.
Sridhar, K.
QCD calculation of J/psi + $\gamma$ mass distributions
title QCD calculation of J/psi + $\gamma$ mass distributions
title_full QCD calculation of J/psi + $\gamma$ mass distributions
title_fullStr QCD calculation of J/psi + $\gamma$ mass distributions
title_full_unstemmed QCD calculation of J/psi + $\gamma$ mass distributions
title_short QCD calculation of J/psi + $\gamma$ mass distributions
title_sort qcd calculation of j/psi + $\gamma$ mass distributions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(93)91022-F
http://cds.cern.ch/record/252582
work_keys_str_mv AT bergeredmondl qcdcalculationofjpsigammamassdistributions
AT sridhark qcdcalculationofjpsigammamassdistributions

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