The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEP

We study the contribution of B_c mesons to the search for B->tau nu decays. We find that at LEP the contributions from B_u and B_c mesons can be comparable. This observation can have a relevant impact on the extraction of constraints on new physics (such as charged-Higgs contributions) from curre...

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Detalles Bibliográficos
Autores principales: Mangano, Michelangelo L., Slabospitsky, S.R.
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(97)00953-2
http://cds.cern.ch/record/329523
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author Mangano, Michelangelo L.
Slabospitsky, S.R.
author_facet Mangano, Michelangelo L.
Slabospitsky, S.R.
author_sort Mangano, Michelangelo L.
collection CERN
description We study the contribution of B_c mesons to the search for B->tau nu decays. We find that at LEP the contributions from B_u and B_c mesons can be comparable. This observation can have a relevant impact on the extraction of constraints on new physics (such as charged-Higgs contributions) from current LEP limits on B->tau nu final states. Inclusion of the B_c contribution can reduce the current L3 limit on Tan(beta)/M_H from 0.38/GeV (90%CL) down to 0.27/GeV (90%CL).
id cern-329523
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
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spelling cern-3295232023-03-12T05:50:28Zdoi:10.1016/S0370-2693(97)00953-2http://cds.cern.ch/record/329523engMangano, Michelangelo L.Slabospitsky, S.R.The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEPParticle Physics - PhenomenologyWe study the contribution of B_c mesons to the search for B->tau nu decays. We find that at LEP the contributions from B_u and B_c mesons can be comparable. This observation can have a relevant impact on the extraction of constraints on new physics (such as charged-Higgs contributions) from current LEP limits on B->tau nu final states. Inclusion of the B_c contribution can reduce the current L3 limit on Tan(beta)/M_H from 0.38/GeV (90%CL) down to 0.27/GeV (90%CL).We study the contribution of B c mesons to the search for B → τν τ decays. We find that at LEP the contributions from B u and B c mesons can be comparable. This observation can have a relevant impact on the extraction of constraints on new physics (such as charged-Higgs contributions) from current LEP limits on B → τν final states. Inclusion of the B c contribution can reduce the current L3 limit on tan β M H from 0.38 GeV −1 (90% CL) down to 0.27 GeV −1 (90% CL).We study the contribution of B_c mesons to the search for B->tau nu decays. We find that at LEP the contributions from B_u and B_c mesons can be comparable. This observation can have a relevant impact on the extraction of constraints on new physics (such as charged-Higgs contributions) from current LEP limits on B->tau nu final states. Inclusion of the B_c contribution can reduce the current L3 limit on Tan(beta)/M_H from 0.38/GeV (90%CL) down to 0.27/GeV (90%CL).hep-ph/9707248CERN-TH-97-150CERN-TH-97-150oai:cds.cern.ch:3295231997-07-04
spellingShingle Particle Physics - Phenomenology
Mangano, Michelangelo L.
Slabospitsky, S.R.
The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEP
title The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEP
title_full The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEP
title_fullStr The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEP
title_full_unstemmed The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEP
title_short The contribution of $B_c$ mesons to the search for $B^{+} \to \tau^{+}\nu_{\tau}$ decays at LEP
title_sort contribution of $b_c$ mesons to the search for $b^{+} \to \tau^{+}\nu_{\tau}$ decays at lep
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(97)00953-2
http://cds.cern.ch/record/329523
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