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Study of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCb
A search for the rare decays B0s->pi pi mu mu and B0->pi pi mu mu is performed in a data set corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7 and 8TeV. Decay candidates with pion pairs that have inv...
| Autor principal: | |
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| Lenguaje: | eng |
| Publicado: |
2015
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| Acceso en línea: | http://cds.cern.ch/record/2000951 |
| _version_ | 1780946012125265920 |
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| author | Komarov, Ilya |
| author_facet | Komarov, Ilya |
| author_sort | Komarov, Ilya |
| collection | CERN |
| description | A search for the rare decays B0s->pi pi mu mu and B0->pi pi mu mu is performed in a data set corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7 and 8TeV. Decay candidates with pion pairs that have invariant mass in the range 0.5--1.3 GeV/c2 and with muon pairs that do not originate from a resonance are considered. The first observation of the decay B0s->pi pi mu mu and the first evidence of the decay B0->pi pi mu mu are obtained and the branching fractions, restricted to the dipion-mass range considered, are measured to be Br(B0s->pi pi mu mu) = (8.6 +/- 1.5 (stat) +/- 0.7 (syst) +/- 0.7 (norm))*10^-8 and Br(B0->pi pi mu mu) = (2.11 +/- 0.51 (stat) +/- 0.15 (syst) +/- 0.16 (norm)) *10^-8, where the third uncertainty is due to the branching fraction of the decay B0->J/psi K*, used as a normalisation. |
| id | cern-2000951 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2015 |
| record_format | invenio |
| spelling | cern-20009512019-09-30T06:29:59Zhttp://cds.cern.ch/record/2000951engKomarov, IlyaStudy of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCbA search for the rare decays B0s->pi pi mu mu and B0->pi pi mu mu is performed in a data set corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7 and 8TeV. Decay candidates with pion pairs that have invariant mass in the range 0.5--1.3 GeV/c2 and with muon pairs that do not originate from a resonance are considered. The first observation of the decay B0s->pi pi mu mu and the first evidence of the decay B0->pi pi mu mu are obtained and the branching fractions, restricted to the dipion-mass range considered, are measured to be Br(B0s->pi pi mu mu) = (8.6 +/- 1.5 (stat) +/- 0.7 (syst) +/- 0.7 (norm))*10^-8 and Br(B0->pi pi mu mu) = (2.11 +/- 0.51 (stat) +/- 0.15 (syst) +/- 0.16 (norm)) *10^-8, where the third uncertainty is due to the branching fraction of the decay B0->J/psi K*, used as a normalisation.Poster-2015-481oai:cds.cern.ch:20009512015-03-04 |
| spellingShingle | Komarov, Ilya Study of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCb |
| title | Study of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCb |
| title_full | Study of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCb |
| title_fullStr | Study of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCb |
| title_full_unstemmed | Study of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCb |
| title_short | Study of the rare $B^{0}_{s}$ and $B^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at LHCb |
| title_sort | study of the rare $b^{0}_{s}$ and $b^{0}$ decays into the $\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ final state at lhcb |
| url | http://cds.cern.ch/record/2000951 |
| work_keys_str_mv | AT komarovilya studyoftherareb0sandb0decaysintothepipimumufinalstateatlhcb |