Possible solution of the J/psi production puzzle

Abstract

We argue that the s-channel cut contribution to J/psi hadroproduction can be significantly larger than the usual cut contribution of the color-singlet mechanism, which is known to underestimate the experimental measurements. A scenario accounting for intermediate $c\overline{(}c)$ interactions is proposed that reproduces the data at low- and mid-range transverse momenta P_T from the Fermilab Tevatron and BNL Relativistiv Heavy Ion Collider. The J/psi produced in this manner are polarized predominantly longitudinally.

4 pages, 4 figures; version (with minor text revisions) as published in PRL

References in corpus (2)

• Hadroproduction of J/psi and Upsilon in association with a heavy-quark pair
• Color Transfer in Associated Heavy-Quarkonium Production

Cited by in corpus (2)

• Upsilon production at the Tevatron and the LHC
• QCD corrections to J/psi polarization of hadronproduction at Tevatron and LHC