Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector

With an integrated luminosity of 2.47 fb-1 recorded by the ATLAS experiment at the LHC, the exclusive decays Bs0→J/ψφ and Bd0→J/ψK∗0 of B mesons produced in pp collisions at s=7 TeV are used to determine the ratio of fragmentation fractions fs/fd. From the observed Bs0→J/ψφ and Bd0→J/ψK∗0 yields, th...

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Detalles Bibliográficos
Autor principal: Aad, G.
Formato: JOUR
Materias:
Atomic physics
ATLAS detectors
ATLAS experiment
B mesons
Integrated luminosity
New approaches
Quark fragmentation
Theory predictions
Tellurium compounds
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v115_n26_p_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00319007_v115_n26_p_Aad2023-10-03T14:42:39Z Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector Aad, G. Atomic physics ATLAS detectors ATLAS experiment B mesons Integrated luminosity New approaches Quark fragmentation Theory predictions Tellurium compounds With an integrated luminosity of 2.47 fb-1 recorded by the ATLAS experiment at the LHC, the exclusive decays Bs0→J/ψφ and Bd0→J/ψK∗0 of B mesons produced in pp collisions at s=7 TeV are used to determine the ratio of fragmentation fractions fs/fd. From the observed Bs0→J/ψφ and Bd0→J/ψK∗0 yields, the quantity (fs/fd)[B(Bs0→J/ψφ)/B(Bd0→J/ψK∗0)] is measured to be 0.199±0.004(stat)±0.008(syst). Using a recent theory prediction for [B(Bs0→J/ψφ)/B(Bd0→J/ψK∗0)] yields (fs/fd)=0.240±0.004(stat)±0.010(syst)±0.017(th). This result is based on a new approach that provides a significant improvement of the world average. © 2015 CERN., for the Atlas Collaboration. Published by the American Physical Society under the terms of the »http://creativecommons.org/licenses/by/3.0/» Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319007_v115_n26_p_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Atomic physics
ATLAS detectors
ATLAS experiment
B mesons
Integrated luminosity
New approaches
Quark fragmentation
Theory predictions
Tellurium compounds
spellingShingle Atomic physics
ATLAS detectors
ATLAS experiment
B mesons
Integrated luminosity
New approaches
Quark fragmentation
Theory predictions
Tellurium compounds
Aad, G.
Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector
topic_facet Atomic physics
ATLAS detectors
ATLAS experiment
B mesons
Integrated luminosity
New approaches
Quark fragmentation
Theory predictions
Tellurium compounds
description With an integrated luminosity of 2.47 fb-1 recorded by the ATLAS experiment at the LHC, the exclusive decays Bs0→J/ψφ and Bd0→J/ψK∗0 of B mesons produced in pp collisions at s=7 TeV are used to determine the ratio of fragmentation fractions fs/fd. From the observed Bs0→J/ψφ and Bd0→J/ψK∗0 yields, the quantity (fs/fd)[B(Bs0→J/ψφ)/B(Bd0→J/ψK∗0)] is measured to be 0.199±0.004(stat)±0.008(syst). Using a recent theory prediction for [B(Bs0→J/ψφ)/B(Bd0→J/ψK∗0)] yields (fs/fd)=0.240±0.004(stat)±0.010(syst)±0.017(th). This result is based on a new approach that provides a significant improvement of the world average. © 2015 CERN., for the Atlas Collaboration. Published by the American Physical Society under the terms of the »http://creativecommons.org/licenses/by/3.0/» Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
format JOUR
author Aad, G.
author_facet Aad, G.
author_sort Aad, G.
title Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector
title_short Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector
title_full Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector
title_fullStr Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector
title_full_unstemmed Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector
title_sort determination of the ratio of b -quark fragmentation fractions fs /fd in pp collisions at s =7 tev with the atlas detector
url http://hdl.handle.net/20.500.12110/paper_00319007_v115_n26_p_Aad
work_keys_str_mv AT aadg determinationoftheratioofbquarkfragmentationfractionsfsfdinppcollisionsats7tevwiththeatlasdetector
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