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Medium Modification of Jet Shapes and Jet Multiplicities

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 e...

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Detalles Bibliográficos
Autores principales: Salgado, Carlos A., Wiedemann, Urs Achim
Lenguaje:eng
Publicado: 2003
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.93.042301
http://cds.cern.ch/record/647289
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author Salgado, Carlos A.
Wiedemann, Urs Achim
author_facet Salgado, Carlos A.
Wiedemann, Urs Achim
author_sort Salgado, Carlos A.
collection CERN
description 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.
id cern-647289
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6472892023-03-14T20:04:51Zdoi:10.1103/PhysRevLett.93.042301http://cds.cern.ch/record/647289engSalgado, Carlos A.Wiedemann, Urs AchimMedium Modification of Jet Shapes and Jet MultiplicitiesParticle Physics - PhenomenologyMedium-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.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.hep-ph/0310079CERN-TH-2003-244CERN-TH-2003-244oai:cds.cern.ch:6472892003-10-07
spellingShingle Particle Physics - Phenomenology
Salgado, Carlos A.
Wiedemann, Urs Achim
Medium Modification of Jet Shapes and Jet Multiplicities
title Medium Modification of Jet Shapes and Jet Multiplicities
title_full Medium Modification of Jet Shapes and Jet Multiplicities
title_fullStr Medium Modification of Jet Shapes and Jet Multiplicities
title_full_unstemmed Medium Modification of Jet Shapes and Jet Multiplicities
title_short Medium Modification of Jet Shapes and Jet Multiplicities
title_sort medium modification of jet shapes and jet multiplicities
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevLett.93.042301
http://cds.cern.ch/record/647289
work_keys_str_mv AT salgadocarlosa mediummodificationofjetshapesandjetmultiplicities
AT wiedemannursachim mediummodificationofjetshapesandjetmultiplicities