Spin effects in diffractive charmonia production

TL;DR

This paper investigates the production of polarized axial-vector and tensor charmonia in proton-(anti)proton collisions, deriving amplitudes within the $k_t$-factorisation framework and discussing experimental implications.

Contribution

It provides the first detailed derivation of amplitudes for polarized $ ext{chi}_c(1^+)$ and $ ext{chi}_c(2^+)$ production in diffractive processes at Tevatron energies.

Findings

Quantified contributions from different polarization states.

Derived explicit amplitudes within the $k_t$-factorisation approach.

Discussed potential experimental signatures.

Abstract

We consider exclusive double diffractive production of polarised axial-vector $\chi_c(1^+)$ and tensor $\chi_c(2^+)$ charmonia in proton-(anti)proton collisions at Tevatron energy. The corresponding amplitudes for these processes are derived within the $k_t$-factorisation approach. Contributions from different polarisation states of axial-vector and tensor charmonia are quantified. Corresponding experimental consequences are discussed.