Perturbative QCD Description of Heavy and Light Flavor Jet Quenching

Journal Article · Fri Dec 31 00:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.262301· OSTI ID:21554498

Guangyou, Qin ^[1]; Majumder, Abhijit ^[2]

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1. Department of Physics, Duke University, Durham, North Carolina 27708 (United States)
2. Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)

We present a successful description of the medium modification of light and heavy flavor jets within a perturbative-QCD-based approach. Only the couplings involving hard partons are assumed to be weak. The effect of the medium on a hard parton, per unit time, is encoded in terms of three nonperturbative, related transport coefficients which describe the transverse momentum squared gained, the elastic energy loss, and diffusion in elastic energy transfer. Scaling the transport coefficients with the temperature of the medium, we achieve a good description of the centrality dependence of the suppression and the azimuthal anisotropy of leading hadrons. Imposing additional constraints based on leading order (LO) hard thermal loop (HTL) effective theory leads to a worsening of the fit, implying the necessity of computing transport coefficients beyond LO HTL.

• OSTI ID: 21554498
• Journal Information: Physical Review Letters, Vol. 105, Issue 26; Other Information: DOI: 10.1103/PhysRevLett.105.262301; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
COUPLING
DIFFUSION
ENERGY LOSSES
ENERGY TRANSFER
FLAVOR MODEL
HADRONS
INHIBITION
JETS
QUANTUM CHROMODYNAMICS
QUENCHING
TRANSVERSE MOMENTUM
VISIBLE RADIATION
COMPOSITE MODELS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FIELD THEORIES
LINEAR MOMENTUM
LOSSES
MATHEMATICAL MODELS
PARTICLE MODELS
QUANTUM FIELD THEORY
QUARK MODEL
RADIATIONS