Spin effects in diffractive charmonia production

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.

arXiv comment3 pages, 3 figures, talk given at 11th International Workshop on Meson Production, Properties and Interaction, 10-15 June 2010, Kraków, Poland

References in corpus (4)

• Observation of exclusive charmonium production and gamma+gamma to mu+mu- in p+pbar collisions at sqrt{s} = 1.96 TeV
• Unintegrated generalised parton distributions
• Central exclusive chi_c meson production at the Tevatron revisited
• chi_{c1} and chi_{c2} decay angular distributions at the Fermilab Tevatron