Jet quenching and broadening: The Transport coefficient q-hat in an anisotropic plasma - INSPIRE

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Jet quenching and broadening: The Transport coefficient q-hat in an anisotropic plasma

Rolf Baier
(
- Bielefeld U.
)
,
Yacine Mehtar-Tani
(
- Heidelberg U.
)

Jun, 2008

6 pages

Published in:

Phys.Rev.C 78 (2008) 064906

e-Print:

0806.0954 [hep-ph]

DOI:

10.1103/PhysRevC.78.064906

Report number:

BI-TP-2008-05,
HD-THEP-2008-14

View in:

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Abstract: (arXiv)

The jet quenching parameter

\hat{q}

is analyzed for a quark jet propagating in an anisotropic plasma. The momentum anisotropy is calculated at high temperature of the underlying quark-gluon plasma.

\hat{q}

is explicitly estimated in leading-logarithmic approximation by the broadening of the massless quark interacting via gluon exchange. A plasma instability is present. Strong indications are found that

\hat{q}

is increasing with increasing anisotropy. Possible implications for the saturation scale

Q_s

in

A-A

collisions are pointed out.

25.75.Nq
24.85.+p
25.75.Gz
12.38.Mh
scattering: heavy ion
gold
momentum: anisotropy
jet: quenching
transport theory
gas: temperature

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