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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>...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
2009
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2008.11.018 http://cds.cern.ch/record/1156137 |
_version_ | 1780915749074763776 |
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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. |
id | cern-1156137 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2009 |
record_format | invenio |
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 |