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arXiv · 0801.0453

Probing Nuclear Matter with Jet Conversions

W. Liu·R. J. Fries
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Abstract

We discuss the flavor of leading jet partons as a valuable probe of nuclear matter. We point out that the coupling of jets to nuclear matter naturally leads to an alteration of jet chemistry even at high transverse momentum $p_T$. In particular, QCD jets coupling to a chemically equilibrated quark gluon plasma in nuclear collisions, will lead to hadron ratios at high transverse momentum $p_T$ that can differ significantly from their counterparts in $p+p$ collisions. Flavor measurements could complement energy loss as a way to study interactions of hard QCD jets with nuclear matter. Roughly speaking they probe the inverse mean free path $1/λ$, while energy loss probes the average squared momentum transfer $μ^2/λ$. We present some estimates for the rate of jet conversions in a consistent Fokker-Planck framework and their impact on future high-$p_T$ identified hadron measurements at RHIC and LHC. We also suggest some novel observables to test flavor effects.

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W. Liu, R. J. Fries. 2008-04-21. Probing Nuclear Matter with Jet Conversions. https://doi.org/10.1103/physrevc.77.054902

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