Parton Momentum Distribution at the Moment of Jet-Parton Collision

Abstract

We extract the early parton momentum distribution using the STAR Collaboration data of ridge particles associated with a near-side jet in central AuAu collisions at \sqrt{s_{NN}}=200 GeV. The ridge particles are identified as medium partons kicked by the jet near the surface and they carry direct information on the parton momentum distribution at the moment of jet-parton collisions. The extracted parton momentum distribution has a thermal-like transverse momentum distribution but a rapidity plateau structure with a relatively flat rapidity distribution at mid-rapidities with sharp kinematic boundaries at large rapidities that depend on the transverse momentum.

4 pages, 4 figures, in Latex

References in corpus (7)

• Intra-jet correlations of high-$p_t$ hadrons from STAR
• On the Origin of the "Ridge" phenomenon induced by Jets in Heavy Ion Collisions
• Momentum Broadening in an Anisotropic Plasma
• Ridge Structure associated with the Near-Side Jet in the (Delta phi)-(Delta eta) Correlation
• Azimuthal and pseudo-rapidity correlations with strange particles at intermediate-p${}_T$ at RHIC
• Viscosity and the Soft Ridge at RHIC
• Exploring Early Parton Momentum Distribution with the Ridge from the Near-Side Jet

Cited by in corpus (8)

• Long Range Correlations and the Soft Ridge in Relativistic Nuclear Collisions
• Three-particle correlation from glasma flux tubes
• The Momentum Kick Model Description of the Near-Side Ridge and Jet Quenching
• Momentum Kick Model Analysis of PHENIX Near-Side Ridge Data and Photon Jet
• Exploring Early Parton Momentum Distribution with the Ridge from the Near-Side Jet
• Novel Bose-Einstein Interference in the Passage of a Fast Particle in a Dense Medium
• Search for jet quenching effects on the plain jet mass in Pb+Pb collisions at the LHC with a multiphase transport model
• Analysis of the near-side ridge structure in pp collisions via Momentum-Kick Model