Hayashigaki, A. and Suzuki, K. and Tanaka, K. (2003) Diffractive eta(c) and eta(b) productions by neutrinos via neutral currents. PHYSICAL REVIEW D, 67 (9): 093002. ISSN 2470-0010, 2470-0029
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We report on a first theoretical study for neutrino-induced diffractive production of heavy pseudoscalar mesons eta(c) and eta(b) off a nucleon. Based on the factorization formalism for exclusive processes, we evaluate the forward diffractive production cross section in perturbative QCD in terms of the light-cone Q (Q) over bar wave functions (WFs) of eta(c,b) mesons and the gluon distribution of the nucleon. The light-cone WFs of the eta(c) (eta(b)) meson are constructed to satisfy the spin symmetry relations with those of the J/psi (Y) meson. The diffractive eta(c) production is governed by the axial-vector coupling of the longitudinally polarized Z boson to a Q (Q) over bar pair, and the resulting eta(c) production rate is larger than that for the J/psi by one order of magnitude. We also discuss the production of bottomonium eta(b), which shows up for a higher beam energy.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | J/PSI ELECTROPRODUCTION; FERMILAB-TEVATRON; HEAVY QUARKONIUM; VECTOR-MESONS; WAVE-FUNCTION; PHOTOPRODUCTION; SCATTERING; QCD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 11 Aug 2021 06:40 |
| Last Modified: | 11 Aug 2021 06:40 |
| URI: | https://pred.uni-regensburg.de/id/eprint/39080 |
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