6533b851fe1ef96bd12aa21e
RESEARCH PRODUCT
Collimation of average multiplicity in QCD jets
François ArleoRedamy Perez RamosRedamy Perez Ramossubject
QuarkParticle physicsNuclear and High Energy PhysicsLogarithm[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]Nuclear TheoryAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciences7. Clean energy01 natural sciencesQuark–gluon plasmaHigh Energy Physics - ExperimentNuclear Theory (nucl-th)High Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesPerturbative QCDJets[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physicsCoupling constantQuantum chromodynamicsPhysics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyPerturbative QCDMultiplicity (mathematics)GluonHigh Energy Physics - PhenomenologyMultiplicity[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Quark–gluon plasmaHigh Energy Physics::Experimentdescription
Revert field The collimation of average multiplicity inside quark and gluon jets is investigated in perturbative QCD in the modified leading logarithmic approximation (MLLA). The role of higher order corrections accounting for energy conservation and the running of the coupling constant leads to smaller multiplicity collimation as compared to leading logarithmic approximation (LLA) results. The collimation of jets produced in heavy-ion collisions has also been explored by using medium-modified splitting functions enhanced in the infrared sector. As compared to elementary collisions. the angular distribution of the jet multiplicity is found to broaden in QCD media at all energy scales.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-11-01 |