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Probing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMS
An important tool in quark-gluon plasma studies at RHIC has been the measurement of dijets investigated via leading hadron correlations. With much higher rates for hard processes at the Large Hadron Collider, studies of Z^0tagged jets become possible. A clear experimental signature is provided by th...
Autores principales: | , , , , |
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Lenguaje: | eng |
Publicado: |
2007
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1142/S0218301307007283 http://cds.cern.ch/record/1049923 |
_version_ | 1780912843751686144 |
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author | Mironov, Camelia Castro, M Constantin, P Kunde, G J Vogt, R |
author_facet | Mironov, Camelia Castro, M Constantin, P Kunde, G J Vogt, R |
author_sort | Mironov, Camelia |
collection | CERN |
description | An important tool in quark-gluon plasma studies at RHIC has been the measurement of dijets investigated via leading hadron correlations. With much higher rates for hard processes at the Large Hadron Collider, studies of Z^0tagged jets become possible. A clear experimental signature is provided by the measurement of muon pairs from the Z^0 decays, for which CMS is an ideally suited detector. Instead of measuring back-to-back correlations of two strongly interacting particles, one side is replaced by an electromagnetic probe which propagates through the plasma undisturbed and provides a measurement of the energy of the initial hard scattering. We propose to use lepton-pair tagged jets to study medium-induced partonic energy loss and to measure in-medium parton fragmentation functions. The lepton pairs from semileptonic decays of heavy meson pairs (B overline {B} and D overline{D}) are a background source for the dilepton jet tag signal. We present the calculated signal rates (using PYTHIA) and background rates (using HVQMNR). We also discuss strategies for maximizing the signal-to-background ratio. |
id | cern-1049923 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2007 |
record_format | invenio |
spelling | cern-10499232019-09-30T06:29:59Zdoi:10.1142/S0218301307007283http://cds.cern.ch/record/1049923engMironov, CameliaCastro, MConstantin, PKunde, G JVogt, RProbing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMSDetectors and Experimental TechniquesAn important tool in quark-gluon plasma studies at RHIC has been the measurement of dijets investigated via leading hadron correlations. With much higher rates for hard processes at the Large Hadron Collider, studies of Z^0tagged jets become possible. A clear experimental signature is provided by the measurement of muon pairs from the Z^0 decays, for which CMS is an ideally suited detector. Instead of measuring back-to-back correlations of two strongly interacting particles, one side is replaced by an electromagnetic probe which propagates through the plasma undisturbed and provides a measurement of the energy of the initial hard scattering. We propose to use lepton-pair tagged jets to study medium-induced partonic energy loss and to measure in-medium parton fragmentation functions. The lepton pairs from semileptonic decays of heavy meson pairs (B overline {B} and D overline{D}) are a background source for the dilepton jet tag signal. We present the calculated signal rates (using PYTHIA) and background rates (using HVQMNR). We also discuss strategies for maximizing the signal-to-background ratio.CMS-CR-2007-011oai:cds.cern.ch:10499232007-07-18 |
spellingShingle | Detectors and Experimental Techniques Mironov, Camelia Castro, M Constantin, P Kunde, G J Vogt, R Probing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMS |
title | Probing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMS |
title_full | Probing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMS |
title_fullStr | Probing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMS |
title_full_unstemmed | Probing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMS |
title_short | Probing the Quark-Gluon Plasma at the LHC with Z$^{0}$- tagged Jets in CMS |
title_sort | probing the quark-gluon plasma at the lhc with z$^{0}$- tagged jets in cms |
topic | Detectors and Experimental Techniques |
url | https://dx.doi.org/10.1142/S0218301307007283 http://cds.cern.ch/record/1049923 |
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