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

TL;DR

This paper investigates the exclusive double diffractive production of various chi_c mesons in proton-(anti)proton collisions at different energies, using the k_t-factorisation approach and comparing different gluon distribution models.

Contribution

It derives amplitudes for chi_c meson production within the k_t-factorisation framework and compares theoretical predictions with experimental possibilities across multiple energies.

Findings

Calculated cross sections for chi_c(0+), chi_c(1+), chi_c(2+) production.

Compared different unintegrated gluon distribution functions (UGDFs).

Discussed experimental detection via radiative decay channels.

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.