Diffractive production of chi(c)(0+,1+,2+) mesons at LHC, Tevatron and RHIC

Abstract

We consider exclusive double diffractive production of scalar \chi_c(0^+), axial-vector \chi_c(1^+) and tensor \chi_c(2^+) charmonia in proton-(anti)proton collisions at different energies. The corresponding amplitudes for these processes are derived within the k_t-factorisation approach and the corresponding cross section is calculated with different unintegrated gluon distribution functions (UGDFs) known from the literature. We compare exclusive production of all charmonium states \chi_c(0^+), \chi_c(1^+) and \chi_c(2^+) including branching fraction for radiative J/\Psi + \gamma decay channel. Corresponding experimental consequences are discussed.

Comments: 4 pages, Talk given at European Physical Society Europhysics Conference on High Energy Physics, EPS-HEP 2009, July 16 - 22 2009, Krakow, Poland