A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies

A unique parametrization of secondary (thermal) dilepton yields in heavy-ion experiments at CERN-SPS is proposed. This parametrization resembles a thermal $q \bar q$ annihilation rate. This is inspired by the observation that lepton pair production rates are quantitatively similar, whether expressed...

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Detalles Bibliográficos
Autores principales: Gallmeister, K., Kampfer, Burkhard, Pavlenko, O.P., Gale, Charles
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0375-9474(00)00584-4
http://cds.cern.ch/record/473711
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author Gallmeister, K.
Kampfer, Burkhard
Pavlenko, O.P.
Gale, Charles
author_facet Gallmeister, K.
Kampfer, Burkhard
Pavlenko, O.P.
Gale, Charles
author_sort Gallmeister, K.
collection CERN
description A unique parametrization of secondary (thermal) dilepton yields in heavy-ion experiments at CERN-SPS is proposed. This parametrization resembles a thermal $q \bar q$ annihilation rate. This is inspired by the observation that lepton pair production rates are quantitatively similar, whether expressed in a hadronic or partonic basis. Adding the thermal yield and the background contributions (hadronic cocktail, Drell-Yan, correlated semileptonic decays of open charm) the spectral shapes of the CERES/NA45, NA38, NA50 and HELIOS/3 data from experiments with lead and sulfur beams can be well described.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-4737112020-03-12T03:47:13Zdoi:10.1016/S0375-9474(00)00584-4http://cds.cern.ch/record/473711engGallmeister, K.Kampfer, BurkhardPavlenko, O.P.Gale, CharlesA unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energiesParticle Physics - PhenomenologyA unique parametrization of secondary (thermal) dilepton yields in heavy-ion experiments at CERN-SPS is proposed. This parametrization resembles a thermal $q \bar q$ annihilation rate. This is inspired by the observation that lepton pair production rates are quantitatively similar, whether expressed in a hadronic or partonic basis. Adding the thermal yield and the background contributions (hadronic cocktail, Drell-Yan, correlated semileptonic decays of open charm) the spectral shapes of the CERES/NA45, NA38, NA50 and HELIOS/3 data from experiments with lead and sulfur beams can be well described.A unique parametrization of secondary (thermal) dilepton yields in heavy-ion experiments at CERN-SPS is proposed. This parametrization resembles a thermal $q \bar q$ annihilation rate. This is inspired by the observation that lepton pair production rates are quantitatively similar, whether expressed in a hadronic or partonic basis. Adding the thermal yield and the background contributions (hadronic cocktail, Drell-Yan, correlated semileptonic decays of open charm) the spectral shapes of the CERES/NA45, NA38, NA50 and HELIOS/3 data from experiments with lead and sulfur beams can be well described.A unique parametrization of secondary (thermal) dilepton yields in heavy-ion experiments at CERN-SPS is proposed. This parametrization resembles a thermal q q ̄ annihilation rate. This is inspired by the observation that lepton pair production rates are quantitatively similar, whether expressed in a hadronic or partonic basis. Adding the thermal yield and the background contributions (hadronic cocktail, Drell–Yan, correlated semileptonic decays of open charm) the spectral shapes of the CERES/NA45, NA38, NA50 and HELIOS/3 data from experiments with lead and sulfur beams can be well described.hep-ph/0010332oai:cds.cern.ch:4737112001
spellingShingle Particle Physics - Phenomenology
Gallmeister, K.
Kampfer, Burkhard
Pavlenko, O.P.
Gale, Charles
A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
title A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
title_full A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
title_fullStr A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
title_full_unstemmed A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
title_short A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
title_sort unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at cern-sps energies
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0375-9474(00)00584-4
http://cds.cern.ch/record/473711
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