The Azimuthal Asymmetry at large p_t seem to be too large for a ``Jet Quenching''

Details The Azimuthal Asymmetry at large p_t seem to be too large for a ``Jet Quenching'' The Azimuthal Asymmetry at large p_t seem to be too large for a ``Jet Quenching''

2001-12-13

arxiv.org/abs/nucl-th/0112042v2

Phys.Rev. C66 (2002) 027902

Physics

Nuclear Physics

Nuclear Theory

3 pages, 2 figs, 1 table. The final version contaning note added in proofs for PRC, which reflects experimental development wh

Scientific paper

10.1103/PhysRevC.66.027902

We discuss simple generic model of ``jet quenching'' in which matter absorption is defined by one parameter. We show that as absorption grows, the azimuthal asymmetry v_2 grows as well, reaching the finite limit with a simple geometric interpretation. It turns out, that this limit is still below the experimental values for 6 > p_t > 2 GeV, according to preliminary data from STAR experiment at RHIC. We thus conclude that ``jet quenching'' models alone cannot account for the observed phenomenon, and speculate about alternative scenarios.

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