Search for sub-threshold photoproduction of J/ψ mesons

P. Bosted, J. Dunne, C. A. Lee, P. Junnarkar, M. Strikman, J. Arrington, R. Asaturyan, F. Benmokhtar, M. E. Christy, E. Chudakov, B. Clasie, S. H. Connell, M. M. Dalton, A. Daniel, D. Day, D. Dutta, R. Ent, N. Fomin, D. Gaskell, T. HornN. Kalantarians, C. E. Keppel, D. Kiselev, D. G. Meekins, H. Mkrtchyan, T. Navasardyan, J. Roche, V. M. Rodriguez, J. Seely, K. Slifer, S. Tajima, G. Testa, Roman Trojer, F. R. Wesselmann, S. A. Wood, X. C. Zheng

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Abstract

A search was made for sub-threshold J/ψ production from a carbon target by using a mixed real and quasireal Bremsstrahlung photon beam with an endpoint energy of 5.76 GeV. No events were observed, which is consistent with predictions under the assumption of quasifree production. The results place limits on exotic mechanisms that strongly enhance quasifree production.

Original languageEnglish (US)
Article number015209
JournalPhysical Review C - Nuclear Physics
Volume79
Issue number1
DOIs
StatePublished - Jan 26 2009

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    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., ... Zheng, X. C. (2009). Search for sub-threshold photoproduction of J/ψ mesons. Physical Review C - Nuclear Physics, 79(1), [015209]. https://doi.org/10.1103/PhysRevC.79.015209