Systematics of quarkonium production

Systematics of quarkonium production

Quarkonium production in high-energy reactions is found to exhibit a behaviour more universal than that expected from velocity scaling. Total rates of quarkonia produced in hadronic interactions as well as Feynmanx and transverse momentum distributions can be described over the full range of accessible energies (15 < ∼ √ s < ∼ 1800GeV) by two-stage processes. The quarkonium production cross sec...

Systematics of quarkonium production at the LHC and double parton fragmentation

Sean Fleming,* Adam K. Leibovich, Thomas Mehen, and Ira Z. Rothstein Department of Physics, University of Arizona, Tucson, Arizona 85721, USA Department of Physics and Astronomy, Pittsburgh Particle Physics Astrophysics and Cosmology Center (PITT PACC), University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA Department of Physics, Duke University, Durham, North Carolina 27708, USA Departm...

Quarkonium Production

Production & Decay of Quarkonium

In this talk I review NRQCD predictions for the production of charmonium at the Tevatron. After a quick presentation of the NRQCD factorization formalism for production and decay I review some old results and discuss how they compare to recent data. Following this I discuss some recent work done with Adam Leibovich and Ira Rothstein.

The Systematics of Quarkonium Production at the LHC and Double Parton Fragmentation

In this paper we discuss the systematics of quarkonium production at the LHC. In particular, we focus on the necessity to sum logs of the form log(Q/p⊥) and log(p⊥/mQ). We show that the former contributions are power suppressed, while the latter, whose contribution in fragmentation is well known, also arise in the short distance (i.e., non-fragmentation) production mechanisms. Though these cont...