Published March 19, 1987
| Version v1
Journal article
Direct observation and partial-width measurement of γγ decay of charmonium states
Creators
- Baglin, C.1
- Bassompierre, G.1
- Brient, J.C1
- Broll, C.1
- Bussiere, A.1
- Moerch, C.1
- Poulet, M.1
- Baird, S.2
- Guillaud, J.P.2
- Leistam, L.2
- Lundby, A.2
- Macri, M.2
- Mouellic, B.2
- Poole, J.2
- Santroni, A.2
- Borreani, G.3
- Cester, R.3
- Marchetto, F.3
- Menichetti, E.3
- Pastrone, N.3
- Rinaudo, G.3
- Brom, J.M.4
- Escoubes, B.4
- Bugge, L.5
- Buran, T.5
- Khan-Aronsen, E.5
- Kirsebom, K.5
- Skjevling, G.5
- Stugu, B.5
- Burq, J.P.6
- Chemarin, M.6
- Chevallier, M.6
- Fay, J.6
- Ille, B.6
- Lambert, M.6
- Buzzo, A.7, 8
- Ferroni, S.7, 8
- Gracco, V.7, 8
- Pia, M.G.7, 8
- Petrillo, L.9
- Severi, M.9
- Annecy(LAPP)-CERN-Genoa-Lyon(IPN)-Oslo-Rome-Strasbourg-Turin Collaboration
- 1. Grenoble-1 Univ., 74 - Annecy (France). Lab. de Physique des Particules
- 2. European Organization for Nuclear Research, Geneva (Switzerland)
- 3. Turin Univ. (Italy)
- 4. Strasbourg-1 Univ., 67 (France). Centre de Recherches Nucleaires
- 5. Oslo Univ. (Norway)
- 6. Lyon-1 Univ., 69 - Villeurbanne (France). Inst. de Physique Nucleaire
- 7. Genoa Univ. (Italy)
- 8. Istituto Nazionale di Fisica Nucleare, Genoa (Italy)
- 9. Rome Univ. (Italy)
Description
As part of the charmonium formation experiment at the CERN Intersecting Storage Rings, we studied the reaction panti p → canti c → γγ in an antiproton momentum scan through the ηc, χ1, and χ2 regions. We report events observed in the ηc and χ2 regions, whilst no event was observed in the χ1 region, as expected for a spin-1 state. (orig.)
Additional details
Publishing Information
- Journal Title
- Phys. Lett., B
- Journal Volume
- 187
- Journal Issue
- 1/2
- Series
- Phys. Lett., B.
- Journal Page Range
- 191-197
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 18063674
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANNIHILATION; BRANCHING RATIO; CHARMONIUM; CHI-2800 RESONANCES; CHI-3550 RESONANCES; EFFECTIVE MASS; EXPERIMENTAL DATA; GEV RANGE 10-100; HADRONIC PARTICLE DECAY; INCLUSIVE INTERACTIONS; MASS SPECTRA; PARTICLE PRODUCTION; PHOTONS; PROTON-ANTIPROTON INTERACTIONS; RADIATIVE DECAY
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; BOSONS; CHI RESONANCES; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; INFORMATION; INTERACTIONS; MASS; MASSLESS PARTICLES; MESON RESONANCES; MESONS; NUCLEON-ANTINUCLEON INTERACTIO; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; QUARKONIUM; RESONANCE PARTICLES; SPECTRA