Search for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.

The ATLAS experiment, collecting data in pp collisions at the Large Hadron Collider (LHC), allows a variety of B-physics measurements. In this note we focus on exclusive B decays with J/psi -->mu+ mu- in the final state and on the search for the decay Bs --> mu+ mu-. Using 2.4 fb^{-1} of data...

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Detalles Bibliográficos
Autor principal: Iengo, Paolo
Lenguaje:eng
Publicado: 2012
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1498663
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author Iengo, Paolo
author_facet Iengo, Paolo
author_sort Iengo, Paolo
collection CERN
description The ATLAS experiment, collecting data in pp collisions at the Large Hadron Collider (LHC), allows a variety of B-physics measurements. In this note we focus on exclusive B decays with J/psi -->mu+ mu- in the final state and on the search for the decay Bs --> mu+ mu-. Using 2.4 fb^{-1} of data collected in the first half of 2011, ATLAS set an upper limit on the branching fraction of BR(Bs --> mu+ mu-) < 2.2x10^{-8} at 95% confidence level. By combining this result with the corresponding search with CMS and LHCb detectors the observed number of events is in agreement with the background plus Standard Model signal expectation within 1 sigma and the corresponding upper limit to the brancing fraction is 4.2x10^{-9} at 95% CL.
id cern-1498663
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14986632019-09-30T06:29:59Zhttp://cds.cern.ch/record/1498663engIengo, PaoloSearch for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.Detectors and Experimental TechniquesThe ATLAS experiment, collecting data in pp collisions at the Large Hadron Collider (LHC), allows a variety of B-physics measurements. In this note we focus on exclusive B decays with J/psi -->mu+ mu- in the final state and on the search for the decay Bs --> mu+ mu-. Using 2.4 fb^{-1} of data collected in the first half of 2011, ATLAS set an upper limit on the branching fraction of BR(Bs --> mu+ mu-) < 2.2x10^{-8} at 95% confidence level. By combining this result with the corresponding search with CMS and LHCb detectors the observed number of events is in agreement with the background plus Standard Model signal expectation within 1 sigma and the corresponding upper limit to the brancing fraction is 4.2x10^{-9} at 95% CL.ATL-PHYS-PROC-2012-298oai:cds.cern.ch:14986632012-12-11
spellingShingle Detectors and Experimental Techniques
Iengo, Paolo
Search for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.
title Search for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.
title_full Search for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.
title_fullStr Search for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.
title_full_unstemmed Search for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.
title_short Search for Bs --> mu+ mu- and other exclusive B decays with the ATLAS detector.
title_sort search for bs --> mu+ mu- and other exclusive b decays with the atlas detector.
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1498663
work_keys_str_mv AT iengopaolo searchforbsmumuandotherexclusivebdecayswiththeatlasdetector

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