First observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decays
A search for B + → D s + K + K − decays is performed using pp collision data corresponding to an integrated luminosity of 4.8 fb −1 , collected at centre-of-mass energies of 7, 8 and 13 TeV with the LHCb experiment. A significant signal is observed for the first time and the branching fraction is de...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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Springer Verlag
2018
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| _version_ | 1826266226355077120 |
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| author | LHCb Collaboration Bjørn, M Cheung, S Evans, T Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Pullen, H Rollings, A Veneziano, G Vesterinen, M Wilkinson, G |
| author_facet | LHCb Collaboration Bjørn, M Cheung, S Evans, T Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Pullen, H Rollings, A Veneziano, G Vesterinen, M Wilkinson, G |
| author_sort | LHCb Collaboration |
| collection | OXFORD |
| description | A search for B + → D s + K + K − decays is performed using pp collision data corresponding to an integrated luminosity of 4.8 fb −1 , collected at centre-of-mass energies of 7, 8 and 13 TeV with the LHCb experiment. A significant signal is observed for the first time and the branching fraction is determined to be ℬ(B+→Ds+K+K−)=(7.1±0.5±0.6±0.7)×10−6,where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fraction of the normalisation mode B+→Ds+D¯0. A search is also performed for the pure annihilation decay B + → D s + ϕ. No significant signal is observed and a limit of ℬ(B+→Ds+ϕ) < 4.9×10−7(4.2×10−7) is set on the branching fraction at 95% (90%) confidence level.[Figure not available: see fulltext.]. |
| first_indexed | 2024-03-06T20:35:42Z |
| format | Journal article |
| id | oxford-uuid:328b8987-deee-406d-9120-25db6234afd4 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:35:42Z |
| publishDate | 2018 |
| publisher | Springer Verlag |
| record_format | dspace |
| spelling | oxford-uuid:328b8987-deee-406d-9120-25db6234afd42022-03-26T13:14:50ZFirst observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decaysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:328b8987-deee-406d-9120-25db6234afd4Symplectic Elements at OxfordSpringer Verlag2018LHCb CollaborationBjørn, MCheung, SEvans, TGruberg Cazon, BHadavizadeh, THancock, THarnew, NHill, DJalocha, PJohn, MJurik, NMalde, SNandi, APullen, HRollings, AVeneziano, GVesterinen, MWilkinson, GA search for B + → D s + K + K − decays is performed using pp collision data corresponding to an integrated luminosity of 4.8 fb −1 , collected at centre-of-mass energies of 7, 8 and 13 TeV with the LHCb experiment. A significant signal is observed for the first time and the branching fraction is determined to be ℬ(B+→Ds+K+K−)=(7.1±0.5±0.6±0.7)×10−6,where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fraction of the normalisation mode B+→Ds+D¯0. A search is also performed for the pure annihilation decay B + → D s + ϕ. No significant signal is observed and a limit of ℬ(B+→Ds+ϕ) < 4.9×10−7(4.2×10−7) is set on the branching fraction at 95% (90%) confidence level.[Figure not available: see fulltext.]. |
| spellingShingle | LHCb Collaboration Bjørn, M Cheung, S Evans, T Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Pullen, H Rollings, A Veneziano, G Vesterinen, M Wilkinson, G First observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decays |
| title | First observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decays |
| title_full | First observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decays |
| title_fullStr | First observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decays |
| title_full_unstemmed | First observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decays |
| title_short | First observation of B+ -> D-s(+) K+ K- decays and a search for B+ -> D-s(+) phi decays |
| title_sort | first observation of b gt d s k k decays and a search for b gt d s phi decays |
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