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

Abstract

We consider exclusive double diffractive production of scalar χ_c(0^+), axial-vector χ_c(1^+) and tensor χ_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 χ_c(0^+), χ_c(1^+) and χ_c(2^+) including branching fraction for radiative J/Ψ+ γdecay channel. Corresponding experimental consequences are discussed.

arXiv comment4 pages, Talk given at European Physical Society Europhysics Conference on High Energy Physics, EPS-HEP 2009, July 16 - 22 2009, Krakow, Poland