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Determination of the quark coupling strength |v$_{ub}$| using baryonic decays

A measurement of the ratio of branching fractions between $\Lambda^0_b \to p\mu^- \bar{\nu}_\mu$ and $\Lambda^0_b \to \Lambda^+_c \mu^-\bar{\nu}_\mu$ decays is performed using data corresponding to $2fb^{-1}$ of integrated luminosity, collected by the LHCb detector in 2012. This combined with the la...

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Autor principal: Sutcliffe, W
Lenguaje:eng
Publicado: 2015
Materias:
Acceso en línea:http://cds.cern.ch/record/2624231
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author Sutcliffe, W
author_facet Sutcliffe, W
author_sort Sutcliffe, W
collection CERN
description A measurement of the ratio of branching fractions between $\Lambda^0_b \to p\mu^- \bar{\nu}_\mu$ and $\Lambda^0_b \to \Lambda^+_c \mu^-\bar{\nu}_\mu$ decays is performed using data corresponding to $2fb^{-1}$ of integrated luminosity, collected by the LHCb detector in 2012. This combined with the latest form factor predictions obtained from lattice QCD calculations leads to the first determination of $|V_{ub}|$ at a hadron collider and in a baryon decay, $|V_{ub}|$ = (3.27 ± 0.23) x $10^{-3}$, The measurement is consistent with existing exclusive measurements made using $B^0 \to \pi^+ \mu^- \bar{nu}_\mu$, but disagrees with those made inclusively.
id oai-inspirehep.net-1423233
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
record_format invenio
spelling oai-inspirehep.net-14232332019-09-30T06:29:59Zhttp://cds.cern.ch/record/2624231engSutcliffe, WDetermination of the quark coupling strength |v$_{ub}$| using baryonic decaysParticle Physics - PhenomenologyA measurement of the ratio of branching fractions between $\Lambda^0_b \to p\mu^- \bar{\nu}_\mu$ and $\Lambda^0_b \to \Lambda^+_c \mu^-\bar{\nu}_\mu$ decays is performed using data corresponding to $2fb^{-1}$ of integrated luminosity, collected by the LHCb detector in 2012. This combined with the latest form factor predictions obtained from lattice QCD calculations leads to the first determination of $|V_{ub}|$ at a hadron collider and in a baryon decay, $|V_{ub}|$ = (3.27 ± 0.23) x $10^{-3}$, The measurement is consistent with existing exclusive measurements made using $B^0 \to \pi^+ \mu^- \bar{nu}_\mu$, but disagrees with those made inclusively.oai:inspirehep.net:14232332015
spellingShingle Particle Physics - Phenomenology
Sutcliffe, W
Determination of the quark coupling strength |v$_{ub}$| using baryonic decays
title Determination of the quark coupling strength |v$_{ub}$| using baryonic decays
title_full Determination of the quark coupling strength |v$_{ub}$| using baryonic decays
title_fullStr Determination of the quark coupling strength |v$_{ub}$| using baryonic decays
title_full_unstemmed Determination of the quark coupling strength |v$_{ub}$| using baryonic decays
title_short Determination of the quark coupling strength |v$_{ub}$| using baryonic decays
title_sort determination of the quark coupling strength |v$_{ub}$| using baryonic decays
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/2624231
work_keys_str_mv AT sutcliffew determinationofthequarkcouplingstrengthvubusingbaryonicdecays