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Semileptonic $B_s$ decay measurements at LHCb
I discuss the first semileptonic $B_s$ decay measurements performed at LHCb, and the prospects for precise studies of $B_s$ semileptonic decay properties. The analyses covered here are based on data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV. In...
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Lenguaje: | eng |
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2011
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Acceso en línea: | http://cds.cern.ch/record/1327335 |
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author | Urquijo, Phillip |
author_facet | Urquijo, Phillip |
author_sort | Urquijo, Phillip |
collection | CERN |
description | I discuss the first semileptonic $B_s$ decay measurements performed at LHCb, and the prospects for precise studies of $B_s$ semileptonic decay properties. The analyses covered here are based on data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV. In particular the semileptonic decays $\Bs\to D_s^+ X \munu$ and $\Bs\to D^0K^+ X \munu$ are studied. Two structures are observed in the $D^0K^+$ mass spectrum at masses consistent with the known $D_{s1}(2536)^+$ and $D^*_{s2}(2573)^{+}$ mesons. The measured branching fractions relative to the total $\Bs$ semileptonic rate are ${{\cal{B}}(\Bs\to D_{s2}^{*+} X \munu)}/{{\cal{B}}(\Bs\to X \munu)}= (3.3\pm 1.0\pm 0.4)%$, and ${{\cal{B}}(\Bs\to D_{s1}^+ X \munu)}/{{\cal{B}}(\Bs\to X \munu)}= (5.4\pm 1.2({\rm stat})\pm 0.5({\rm sys}))%$. This is the first observation of the $D_{s2}^{*+}$ state in $\Bs$ decays. |
id | cern-1327335 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2011 |
record_format | invenio |
spelling | cern-13273352023-03-14T19:14:05Zhttp://cds.cern.ch/record/1327335engUrquijo, PhillipSemileptonic $B_s$ decay measurements at LHCbParticle Physics - ExperimentI discuss the first semileptonic $B_s$ decay measurements performed at LHCb, and the prospects for precise studies of $B_s$ semileptonic decay properties. The analyses covered here are based on data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV. In particular the semileptonic decays $\Bs\to D_s^+ X \munu$ and $\Bs\to D^0K^+ X \munu$ are studied. Two structures are observed in the $D^0K^+$ mass spectrum at masses consistent with the known $D_{s1}(2536)^+$ and $D^*_{s2}(2573)^{+}$ mesons. The measured branching fractions relative to the total $\Bs$ semileptonic rate are ${{\cal{B}}(\Bs\to D_{s2}^{*+} X \munu)}/{{\cal{B}}(\Bs\to X \munu)}= (3.3\pm 1.0\pm 0.4)%$, and ${{\cal{B}}(\Bs\to D_{s1}^+ X \munu)}/{{\cal{B}}(\Bs\to X \munu)}= (5.4\pm 1.2({\rm stat})\pm 0.5({\rm sys}))%$. This is the first observation of the $D_{s2}^{*+}$ state in $\Bs$ decays.I discuss the first semileptonic $B_s$ decay measurements performed at LHCb, and the prospects for precise studies of $B_s$ semileptonic decay properties. The analyses covered here are based on data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV. In particular the semileptonic decays $\Bs\to D_s^+ X \munu$ and $\Bs\to D^0K^+ X \munu$ are studied. Two structures are observed in the $D^0K^+$ mass spectrum at masses consistent with the known $D_{s1}(2536)^+$ and $D^*_{s2}(2573)^{+}$ mesons. The measured branching fractions relative to the total $\Bs$ semileptonic rate are ${{\cal{B}}(\Bs\to D_{s2}^{*+} X \munu)}/{{\cal{B}}(\Bs\to X \munu)}= (3.3\pm 1.0\pm 0.4)%$, and ${{\cal{B}}(\Bs\to D_{s1}^+ X \munu)}/{{\cal{B}}(\Bs\to X \munu)}= (5.4\pm 1.2({\rm stat})\pm 0.5({\rm sys}))%$. This is the first observation of the $D_{s2}^{*+}$ state in $\Bs$ decays.arXiv:1102.1160oai:cds.cern.ch:13273352011-02-08 |
spellingShingle | Particle Physics - Experiment Urquijo, Phillip Semileptonic $B_s$ decay measurements at LHCb |
title | Semileptonic $B_s$ decay measurements at LHCb |
title_full | Semileptonic $B_s$ decay measurements at LHCb |
title_fullStr | Semileptonic $B_s$ decay measurements at LHCb |
title_full_unstemmed | Semileptonic $B_s$ decay measurements at LHCb |
title_short | Semileptonic $B_s$ decay measurements at LHCb |
title_sort | semileptonic $b_s$ decay measurements at lhcb |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/1327335 |
work_keys_str_mv | AT urquijophillip semileptonicbsdecaymeasurementsatlhcb |