${\eta }_c$ production and dimuon enhancement in heavy ion collisions

Abstract

Dilepton production in heavy ion collisions, in the Intermediate Mass Region (IMR) has consistently shown an excess over theoretical estimates. An attempt to understand this discrepancy between the observed dilepton pairs and the theoretical estimate is made here through the production of the ${\eta }_c$ meson and estimates obtained by NRQCD calculations. We find that ${\eta }_c$ production offers a satisfactory quantitative picture for explaining the discrepancy.

arXiv commentLateX, 6 pages, 2 figures (eps)

References in corpus (12)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Color-octet quarkonia production
• Color-octet quarkonia production II
• Enhancement of low-mass dileptons in heavy-ion collisions
• Scale evolution of nuclear parton distributions
• Quarkonium Production at High-Energy Colliders
• Thermal Dilepton Radiation at Intermediate Masses at the CERN-SpS
• Theoretical Interpretations of J/Psi Suppression: A Summary
• Enhancement of Intermediate Mass Dileptons From Charm Decays At SPS Energies
• eta_c Production at the Tevatron: A test of NRQCD
• 1P1 charmonium production at the Tevatron
• Dileptons from ${\eta }_c$ in Nucleus-Nucleus collisions

Cited by in corpus (2)

• Hard diffractive ${\eta }_{\mathrm{c},\mathrm{b}}$ hadroproduction at the LHC
• Inclusive diffractive ${\eta }_{\mathrm{c}}$ production in pp, pA and AA modes at the LHC