Multiplicity distributions inside parton cascades developing in a medium
arXiv:hep-ph/0608002 · doi:10.1140/epjc/s10052-006-0057-x 10.1063/1.2714433
Abstract
The explanation of the suppression of high-pT hadron yields at RHIC in terms of jet-quenching implies that the multiplicity distributions of particles inside a jet and jet-like particle correlations differ strongly in nucleus-nucleus collisions at RHIC or at the LHC from those observed at e+e- or hadron colliders. We present a framework for describing the medium-induced modification, which has a direct interpretation in terms of a probabilistic medium-modified parton cascade, and which treats leading and subleading partons on an equal footing. We show that our approach can account for the strong suppression of single inclusive hadron spectra measured in Au-Au collisions at RHIC, and that this implies a characteristic distortion of the single inclusive distribution of soft partons inside the jet. We determine, as a function of the jet energy, to what extent the soft fragments within a jet can be measured above some momentum cut.
5 pages, 4 eps-figures; talk given at Hot Quarks 2006, Villasimius (Sardinia, Italy), May 15-20, 2006
References in corpus (8)
- Distributions of Charged Hadrons Associated with High Transverse Momentum Particles in pp and Au+Au Collisions at sqrt(s_NN)=200 GeV
- Leading-particle suppression in high energy nucleus-nucleus collisions
- The Fragility of High-pT Hadron Spectra as a Hard Probe
- Common Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV
- Energy Loss of Leading Hadrons and Direct Photon production in Evolving Quark-Gluon Plasma
- Multiplicity Difference between Heavy and Light Quark Jets Revisited
- Two particle correlations inside one jet at "Modified Leading Logarithmic Approximation" of Quantum Chromodynamics; I: exact solution of the evolution equations at small x
- Multiplicity distributions for jet parton showers in a medium