Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-04-21
Phys.Rev.D62:074023,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 5 figures, final version to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.62.074023
Using the nonrelativistic QCD factorization formalism, we calculate the electroproduction cross sections of $\eta_c$ in ep collisions, including the contribution from both the transverse photon and the longitudinal photon. For this process the color-singlet contribution vanishes up to the next to leading order perturbative QCD calculations. The dominant contribution comes from the color-octet ${}^1S_0^{(8)}$ subprocess. The nonperturbative color-octet matrix element of ${}^1S_0^{(8)}$ of $\eta_c$ is related to that of ${}^3S_1^{(8)}$ of $J/\psi$ by heavy quark spin symmetry, and the latter can be determined from the direct production of $J/\psi$ at large transverse momentum at the Fermilab Tevatron. The measurement of this process at DESY HERA can be viewed as another independent test for the color-octet production mechanism
Chao Kuang-Ta
Hao Li-Kun
Yuan Fang-Fang
No associations
LandOfFree
Inelastic electroproduction of $η_c$ at ep colliders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Inelastic electroproduction of $η_c$ at ep colliders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inelastic electroproduction of $η_c$ at ep colliders will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-517247