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Resonance production in two-photon collisions at LEP with the L3 detector
A spin-parity-helicity analysis shows the dominance of the gamma to rho /sup 0/ rho /sup 0/ state at threshold, in the wave (J/sup P/, J /sub z/) = (2/sup +/, +or-2) and a significant signal in the 0/sup +/ wave. The negative parity states and the (2/sup +/,0) wave are negligible. For high two-photo...
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Lenguaje: | eng |
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2001
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Acceso en línea: | http://cds.cern.ch/record/884909 |
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author | Kienzle-Focacci, M N |
author_facet | Kienzle-Focacci, M N |
author_sort | Kienzle-Focacci, M N |
collection | CERN |
description | A spin-parity-helicity analysis shows the dominance of the gamma to rho /sup 0/ rho /sup 0/ state at threshold, in the wave (J/sup P/, J /sub z/) = (2/sup +/, +or-2) and a significant signal in the 0/sup +/ wave. The negative parity states and the (2/sup +/,0) wave are negligible. For high two-photon center-of-mass energies a strong production of f/sub 2/(1270) is also observed. The study of the reaction e/sup +/e/sup -/ to e/sup +/e/sup -/K/sub S//sup 0/K/sup +or-/ pi /sup -or+/ shows evidence of the formation of eta (1440), f/sub 1 /(1285) and f/sub 1/(1420) while only the f/sub 1/(1285) is formed in the e/sup +/e/sup -/ to e/sup +/e/sup -/ eta pi /sup +/ pi /sup -/ interaction. The measured value of the eta (1440) two-photon width indicates a strong gluon content. |
id | cern-884909 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2001 |
record_format | invenio |
spelling | cern-8849092019-09-30T06:29:59Zhttp://cds.cern.ch/record/884909engKienzle-Focacci, M NResonance production in two-photon collisions at LEP with the L3 detectorParticle Physics - PhenomenologyA spin-parity-helicity analysis shows the dominance of the gamma to rho /sup 0/ rho /sup 0/ state at threshold, in the wave (J/sup P/, J /sub z/) = (2/sup +/, +or-2) and a significant signal in the 0/sup +/ wave. The negative parity states and the (2/sup +/,0) wave are negligible. For high two-photon center-of-mass energies a strong production of f/sub 2/(1270) is also observed. The study of the reaction e/sup +/e/sup -/ to e/sup +/e/sup -/K/sub S//sup 0/K/sup +or-/ pi /sup -or+/ shows evidence of the formation of eta (1440), f/sub 1 /(1285) and f/sub 1/(1420) while only the f/sub 1/(1285) is formed in the e/sup +/e/sup -/ to e/sup +/e/sup -/ eta pi /sup +/ pi /sup -/ interaction. The measured value of the eta (1440) two-photon width indicates a strong gluon content.oai:cds.cern.ch:8849092001 |
spellingShingle | Particle Physics - Phenomenology Kienzle-Focacci, M N Resonance production in two-photon collisions at LEP with the L3 detector |
title | Resonance production in two-photon collisions at LEP with the L3 detector |
title_full | Resonance production in two-photon collisions at LEP with the L3 detector |
title_fullStr | Resonance production in two-photon collisions at LEP with the L3 detector |
title_full_unstemmed | Resonance production in two-photon collisions at LEP with the L3 detector |
title_short | Resonance production in two-photon collisions at LEP with the L3 detector |
title_sort | resonance production in two-photon collisions at lep with the l3 detector |
topic | Particle Physics - Phenomenology |
url | http://cds.cern.ch/record/884909 |
work_keys_str_mv | AT kienzlefocaccimn resonanceproductionintwophotoncollisionsatlepwiththel3detector |