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Overview
0. Physics motivation: Jet production in QCD medium (AA) vs QCD
vacuum (pp) as a signature of QGP formation at RHIC.
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1. Empirical observation I: High pT (leading) hadron suppression.
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- Magnitude of suppression (x5 in central AuAu @ RHIC-200 GeV) provides
direct info on transport (<q0>) & thermodynam. (dNg/dy) properties of medium
- Properties of suppression (pT-, Ös-, ... dependence) in agreement w/
non-Abelian gluon radiation off hard scattered partons.
2. Empirical observation II: Modified high pT di-hadron φ-,η-correlations.
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- - Disappearance of back-to-back dNpair/dφ peak (“monojets”)
- - "Double peak" structure in away-side dNpair/dφ (“Mach boom” in medium ?)
- - Di-jet pseudo-rapidity dNpair/dη broadening (coupling of g rad. w/ long. expansion ?)
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3. Summary
Disclaimer: This is a limited selection of a vast number of exp. nucleus-nucleus data (no mention to high pT baryon or heavy-Q spectra, no space for discussion on detailed jet properties <jT>,<kT>, ...)
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