Search for sub-threshold photoproduction of J / ψ mesons

Search for sub-threshold photoproduction of J / ψ mesons

A search was made for sub-threshold $J/\psi$ production from a carbon target using a mixed real and quasi-real Bremsstrahlung photon beam with an endpoint energy of 5.76 GeV. No events were observed, which is consistent with predictions assuming quasi-free production. The results place limits on exo...

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Veröffentlicht in:Physical review. C, Nuclear physics Nuclear physics, 2009-01, Vol.79 (1), Article 015209
Hauptverfasser: Bosted, P., Dunne, J., Lee, C. A., Junnarkar, P., Strikman, M., Arrington, J., Asaturyan, R., Benmokhtar, F., Christy, M. E., Chudakov, E., Clasie, B., Connell, S. H., Dalton, M. M., Daniel, A., Day, D., Dutta, D., Ent, R., Fomin, N., Gaskell, D., Horn, T., Kalantarians, N., Keppel, C. E., Kiselev, D., Meekins, D. G., Mkrtchyan, H., Navasardyan, T., Roche, J., Rodriguez, V. M., Seely, J., Slifer, K., Tajima, S., Testa, G., Trojer, Roman, Wesselmann, F. R., Wood, S. A., Zheng, X. C.
Format: Artikel
Sprache:eng
Schlagworte:
BREMSSTRAHLUNG
CARBON
MESONS
PHOTON BEAMS
PHOTOPRODUCTION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PRODUCTION
TARGETS
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Beschreibung
Zusammenfassung:A search was made for sub-threshold $J/\psi$ production from a carbon target using a mixed real and quasi-real Bremsstrahlung photon beam with an endpoint energy of 5.76 GeV. No events were observed, which is consistent with predictions assuming quasi-free production. The results place limits on exotic mechanisms that strongly enhance quasi-free production.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.79.015209