Baryon anomaly and strong color fields in Pb + Pb collisions at 2.76ATeV at the CERN Large Hadron Collider
| Autor: | Charles Gale, Miklos Gyulassy, J. Barrette, V. Topor Pop |
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| Rok vydání: | 2011 |
| Předmět: |
Nuclear and High Energy Physics
Particle physics Nuclear Theory Meson Hadron FOS: Physical sciences Parton 01 natural sciences High Energy Physics - Experiment Nuclear Theory (nucl-th) Nuclear physics High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences Nuclear Experiment (nucl-ex) Nuclear Experiment 010306 general physics Jet quenching Physics Large Hadron Collider 010308 nuclear & particles physics High Energy Physics::Phenomenology Hyperon Baryon High Energy Physics - Phenomenology Quark–gluon plasma High Energy Physics::Experiment |
| Zdroj: | Physical Review C. 84 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.84.044909 |
| Popis: | With the HIJING/BBbar v2.0 heavy ion event generator, we explore the phenomenological consequences of several high parton density dynamical effects predicted in central Pb+Pb collisions at the Large Hadron Collider (LHC) energies. These include (1) jet quenching due to parton energy loss (dE/dx), (2) strangeness and hyperon enhancement due to strong longitudinal color field (SCF), and (3) enhancement of baryon-to-meson ratios due to baryon-anti-baryon junctions (JJbar) loops and SCF effects. The saturation/minijet cutoff scale p0(s)and effective string tension kappa(s,A) are constrained by our previous analysis of LHC p+p data and recent data on the charged multiplicity for Pb+Pb collisions reported by the ALICE collaboration. We predict the hadron flavor dependence (mesons and baryons) of the nuclear modification factor RAA(pT)$ and emphasize the possibility that the baryon anomaly could persist at the LHC up to pT=10 GeV, well beyond the range observed in central Au+Au collisions at RHIC energies. Comment: 25 pages, 8 figures, revtex4, text modifications, added references, accepted for publication Phys. Rev. C (2011) |
| Databáze: | OpenAIRE |
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