Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K-
The first observation of the decay B0 -> D0bar K+ K- is reported from an analysis of 0.62 fb-1 of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B0 -> D0bar pi+ pi- to be BR(B0 -> D0bar K...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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2012
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| _version_ | 1797100141664010240 |
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| author | collaboration, L Aaij, R Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_facet | collaboration, L Aaij, R Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_sort | collaboration, L |
| collection | OXFORD |
| description | The first observation of the decay B0 -> D0bar K+ K- is reported from an analysis of 0.62 fb-1 of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B0 -> D0bar pi+ pi- to be BR(B0 -> D0bar K+ K-)/BR(B0 -> D0bar pi+ pi-) = 0.056+-0.011+-0.007, where the first uncertainty is statistical and the second is systematic. The significance of the signal is 5.8 sigma. Evidence, with 3.8 sigma significance, for Bs -> D0bar K+ K- decays is also presented, with a relative branching fraction of BR(Bs -> D0bar K+ K-)/BR(B0 -> D0bar K+ K-) = 0.90+-0.27+-0.20. |
| first_indexed | 2024-03-07T05:33:33Z |
| format | Journal article |
| id | oxford-uuid:e31b996e-baf9-45b0-85fe-a354d8968b83 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:33:33Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:e31b996e-baf9-45b0-85fe-a354d8968b832022-03-27T10:06:30ZObservation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K-Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e31b996e-baf9-45b0-85fe-a354d8968b83Symplectic Elements at Oxford2012collaboration, LAaij, RBeteta, CAdametz, AAdeva, BAdinolfi, MAdrover, CAffolder, AAjaltouni, ZAlbrecht, JAlessio, FAlexander, MAli, SAlkhazov, GCartelle, PJr, AAmato, SAmhis, YAnderlini, LAnderson, JAppleby, RGutierrez, OArchilli, FArtamonov, AArtuso, MThe first observation of the decay B0 -> D0bar K+ K- is reported from an analysis of 0.62 fb-1 of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B0 -> D0bar pi+ pi- to be BR(B0 -> D0bar K+ K-)/BR(B0 -> D0bar pi+ pi-) = 0.056+-0.011+-0.007, where the first uncertainty is statistical and the second is systematic. The significance of the signal is 5.8 sigma. Evidence, with 3.8 sigma significance, for Bs -> D0bar K+ K- decays is also presented, with a relative branching fraction of BR(Bs -> D0bar K+ K-)/BR(B0 -> D0bar K+ K-) = 0.90+-0.27+-0.20. |
| spellingShingle | collaboration, L Aaij, R Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K- |
| title | Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar
K+ K- |
| title_full | Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar
K+ K- |
| title_fullStr | Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar
K+ K- |
| title_full_unstemmed | Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar
K+ K- |
| title_short | Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar
K+ K- |
| title_sort | observation of the decay b0 gt d0bar k k and evidence for bs gt d0bar k k |
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