Backgrounds for rare muonic B-meson decays in ATLAS

The work gives an overview of expected exclusive backgrounds for rare muonic B-meson decays in ATLAS. Based on theoretical calculations and a modelling in Generators, followed by phase space cuts according to fiducial detector volume and trigger acceptance, the authors classify all possible backgrou...

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Detalles Bibliográficos
Autores principales: Nikitin, N, Sivolklokov, S, Smizanska, M, Tlisov, D, Toms, K
Lenguaje:eng
Publicado: 2006
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1000759
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author Nikitin, N
Sivolklokov, S
Smizanska, M
Tlisov, D
Toms, K
author_facet Nikitin, N
Sivolklokov, S
Smizanska, M
Tlisov, D
Toms, K
author_sort Nikitin, N
collection CERN
description The work gives an overview of expected exclusive backgrounds for rare muonic B-meson decays in ATLAS. Based on theoretical calculations and a modelling in Generators, followed by phase space cuts according to fiducial detector volume and trigger acceptance, the authors classify all possible backgrounds according to their importance and select those requiring full detector simulation. The most importat background comes from $B_d^0 \to \pi^- \mu^+ \nu_{\mu}$, when a charged pion decays in a detector volume producing a secondary muon. Similar mechanism would lead to a background comming from B-mesons decaying to two charged hadrons. Another important background is from $B^+ \to \mu^+\mu^-l^+ \nu$.
id cern-1000759
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-10007592021-04-18T19:39:59Zhttp://cds.cern.ch/record/1000759engNikitin, NSivolklokov, SSmizanska, MTlisov, DToms, KBackgrounds for rare muonic B-meson decays in ATLASDetectors and Experimental TechniquesThe work gives an overview of expected exclusive backgrounds for rare muonic B-meson decays in ATLAS. Based on theoretical calculations and a modelling in Generators, followed by phase space cuts according to fiducial detector volume and trigger acceptance, the authors classify all possible backgrounds according to their importance and select those requiring full detector simulation. The most importat background comes from $B_d^0 \to \pi^- \mu^+ \nu_{\mu}$, when a charged pion decays in a detector volume producing a secondary muon. Similar mechanism would lead to a background comming from B-mesons decaying to two charged hadrons. Another important background is from $B^+ \to \mu^+\mu^-l^+ \nu$.This note gives an overview of expected exclusive backgrounds for rare muonic B–meson decays at ATLAS from the theoretical point of view. The goal of this work is to show which of backgrounds are most important for further full detector simulation. It is shown that the most important noncombinatorial background comes from $B_d^0 \to \pi^- \mu^+ \nu_{\mu}$ fake rate. Another important BG sources are $B^+ \to \mu^+\mu^-\ell^+ \nu_{\ell}, B_c^+ \to J/\psi (\mu^+ \mu^-) \ell \nu_{\ell}$ and two-body hadronic B–meson decays.ATL-PHYS-PUB-2007-009ATL-COM-PHYS-2006-086oai:cds.cern.ch:10007592006-11-27
spellingShingle Detectors and Experimental Techniques
Nikitin, N
Sivolklokov, S
Smizanska, M
Tlisov, D
Toms, K
Backgrounds for rare muonic B-meson decays in ATLAS
title Backgrounds for rare muonic B-meson decays in ATLAS
title_full Backgrounds for rare muonic B-meson decays in ATLAS
title_fullStr Backgrounds for rare muonic B-meson decays in ATLAS
title_full_unstemmed Backgrounds for rare muonic B-meson decays in ATLAS
title_short Backgrounds for rare muonic B-meson decays in ATLAS
title_sort backgrounds for rare muonic b-meson decays in atlas
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1000759
work_keys_str_mv AT nikitinn backgroundsforraremuonicbmesondecaysinatlas
AT sivolklokovs backgroundsforraremuonicbmesondecaysinatlas
AT smizanskam backgroundsforraremuonicbmesondecaysinatlas
AT tlisovd backgroundsforraremuonicbmesondecaysinatlas
AT tomsk backgroundsforraremuonicbmesondecaysinatlas

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