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Medium Modification of Jet Shapes and Jet Multiplicities

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arxiv hep-ph/0310079 v2 pith:7H5OBGE5 submitted 2003-10-07 hep-ph

classification hep-ph
keywords distributionsmultiplicityenergykt-broadeningpartonrhicsensitiveaccessible
verification ladder T0 review T1 audit T2 compute T3 formal
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Medium-induced parton energy loss is widely considered to underly the suppression of high-pt leading hadron spectra in 200 GeV/A Au+Au collisions at RHIC. Its description implies a characteristic kt-broadening of the subleading hadronic fragments associated to the hard parton. However, this latter effect is more difficult to measure and remained elusive so far. Here, we discuss how it affects genuine jet observables which are accessible at LHC and possibly at RHIC. We find that the kt-broadening of jet multiplicity distributions provides a very sensitive probe of the properties of dense QCD matter, whereas the sensitivity of jet energy distributions is much weaker. In particular, the sensitive kinematic range of jet multiplicity distributions is almost unaffected by the high multiplicity background.

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Cited by 1 Pith paper

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  1. Towards factorization of jet observables in dense media : An EFT approach

    hep-ph 2025-05 conditional novelty 1.0 of 10

    A review of the SCET plus Glauber open quantum system framework for factorizing medium-modified jet observables, using projected nu-point energy correlators as the worked example.

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