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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...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
2003
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.93.042301 http://cds.cern.ch/record/647289 |
_version_ | 1780900890817855488 |
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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 |
record_format | invenio |
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 |