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Inclusive production of the ρ±(770) meson in hadronic decays of the Z boson

The inclusive production rate of the ρ±(770) vector meson in hadronic Z decays is measured with the ALEPH detector at the LEP collider. A total of 3.2 million hadronic events are selected from data recorded between 1991 and 1995. Decays of ρ±→π0+π± are reconstructed for xE>0.05 and xp>...

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Autores principales: Beddall, Andrew, Beddall, Ayda, Bingül, Ahmet
Lenguaje:eng
Publicado: 2009
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2008.11.018
http://cds.cern.ch/record/1156137
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author Beddall, Andrew
Beddall, Ayda
Bingül, Ahmet
author_facet Beddall, Andrew
Beddall, Ayda
Bingül, Ahmet
author_sort Beddall, Andrew
collection CERN
description The inclusive production rate of the ρ±(770) vector meson in hadronic Z decays is measured with the ALEPH detector at the LEP collider. A total of 3.2 million hadronic events are selected from data recorded between 1991 and 1995. Decays of ρ±→π0+π± are reconstructed for xE>0.05 and xp>0.05 where xp=pρ/pbeam and xE=Eρ/Ebeam. The average ρ± multiplicity per hadronic event is evaluated to be N(ρ±)=2.59±0.03±0.15±0.04 where the first error is statistical and the second systematic. The third error is from the uncertainty in the extrapolation to xp=xE=0. The rates and differential cross-section are compared with Monte Carlo model predictions and OPAL measurements. Residual Bose–Einstein correlations are found to be an important component in the analysis.
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institution Organización Europea para la Investigación Nuclear
language eng
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spelling cern-11561372019-09-30T06:29:59Zdoi:10.1016/j.physletb.2008.11.018http://cds.cern.ch/record/1156137engBeddall, AndrewBeddall, AydaBingül, AhmetInclusive production of the ρ±(770) meson in hadronic decays of the Z bosonParticle Physics - ExperimentThe inclusive production rate of the ρ±(770) vector meson in hadronic Z decays is measured with the ALEPH detector at the LEP collider. A total of 3.2 million hadronic events are selected from data recorded between 1991 and 1995. Decays of ρ±→π0+π± are reconstructed for xE>0.05 and xp>0.05 where xp=pρ/pbeam and xE=Eρ/Ebeam. The average ρ± multiplicity per hadronic event is evaluated to be N(ρ±)=2.59±0.03±0.15±0.04 where the first error is statistical and the second systematic. The third error is from the uncertainty in the extrapolation to xp=xE=0. The rates and differential cross-section are compared with Monte Carlo model predictions and OPAL measurements. Residual Bose–Einstein correlations are found to be an important component in the analysis.CERN-ALEPH-ARCH-DATA-2009-002oai:cds.cern.ch:11561372009-01-19
spellingShingle Particle Physics - Experiment
Beddall, Andrew
Beddall, Ayda
Bingül, Ahmet
Inclusive production of the ρ±(770) meson in hadronic decays of the Z boson
title Inclusive production of the ρ±(770) meson in hadronic decays of the Z boson
title_full Inclusive production of the ρ±(770) meson in hadronic decays of the Z boson
title_fullStr Inclusive production of the ρ±(770) meson in hadronic decays of the Z boson
title_full_unstemmed Inclusive production of the ρ±(770) meson in hadronic decays of the Z boson
title_short Inclusive production of the ρ±(770) meson in hadronic decays of the Z boson
title_sort inclusive production of the ρ±(770) meson in hadronic decays of the z boson
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/j.physletb.2008.11.018
http://cds.cern.ch/record/1156137
work_keys_str_mv AT beddallandrew inclusiveproductionofther770mesoninhadronicdecaysofthezboson
AT beddallayda inclusiveproductionofther770mesoninhadronicdecaysofthezboson
AT bingulahmet inclusiveproductionofther770mesoninhadronicdecaysofthezboson