Measurement of the effective B s 0→K +K - lifetime
A precise determination of the effective B s 0→K +K - lifetime can be used to constrain contributions from physics beyond the Standard Model in the Bs0 meson system. Conventional approaches select B meson decay products that are significantly displaced from the B meson production vertex. As a conseq...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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2012
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| _version_ | 1826294349798834176 |
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| author | Aaij, R Abellan Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Alves, A Amato, S Amhis, Y Anderson, J Appleby, R Aquines Gutierrez, O Archilli, F Archilli, F Artamonov, A Artuso, M Artuso, M |
| author_facet | Aaij, R Abellan Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Alves, A Amato, S Amhis, Y Anderson, J Appleby, R Aquines Gutierrez, O Archilli, F Archilli, F Artamonov, A Artuso, M Artuso, M |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | A precise determination of the effective B s 0→K +K - lifetime can be used to constrain contributions from physics beyond the Standard Model in the Bs0 meson system. Conventional approaches select B meson decay products that are significantly displaced from the B meson production vertex. As a consequence, B mesons with low decay times are suppressed, introducing a bias to the decay time spectrum which must be corrected. This analysis uses a technique that explicitly avoids a lifetime bias by using a neural network based trigger and event selection. Using 1.0 fb -1 of data recorded by the LHCb experiment, the effective B s 0→K +K - lifetime is measured as 1.455±0.046(stat.)±0.006(syst.)ps. © 2012 CERN. |
| first_indexed | 2024-03-07T03:44:16Z |
| format | Journal article |
| id | oxford-uuid:beebceb4-b305-4d0a-b897-49d79d15f90a |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:44:16Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:beebceb4-b305-4d0a-b897-49d79d15f90a2022-03-27T05:43:39ZMeasurement of the effective B s 0→K +K - lifetimeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:beebceb4-b305-4d0a-b897-49d79d15f90aSymplectic Elements at Oxford2012Aaij, RAbellan Beteta, CAdametz, AAdeva, BAdinolfi, MAdrover, CAffolder, AAjaltouni, ZAlbrecht, JAlessio, FAlexander, MAli, SAlkhazov, GAlvarez Cartelle, PAlves, AAmato, SAmhis, YAnderson, JAppleby, RAquines Gutierrez, OArchilli, FArchilli, FArtamonov, AArtuso, MArtuso, MA precise determination of the effective B s 0→K +K - lifetime can be used to constrain contributions from physics beyond the Standard Model in the Bs0 meson system. Conventional approaches select B meson decay products that are significantly displaced from the B meson production vertex. As a consequence, B mesons with low decay times are suppressed, introducing a bias to the decay time spectrum which must be corrected. This analysis uses a technique that explicitly avoids a lifetime bias by using a neural network based trigger and event selection. Using 1.0 fb -1 of data recorded by the LHCb experiment, the effective B s 0→K +K - lifetime is measured as 1.455±0.046(stat.)±0.006(syst.)ps. © 2012 CERN. |
| spellingShingle | Aaij, R Abellan Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Alves, A Amato, S Amhis, Y Anderson, J Appleby, R Aquines Gutierrez, O Archilli, F Archilli, F Artamonov, A Artuso, M Artuso, M Measurement of the effective B s 0→K +K - lifetime |
| title | Measurement of the effective B s 0→K +K - lifetime |
| title_full | Measurement of the effective B s 0→K +K - lifetime |
| title_fullStr | Measurement of the effective B s 0→K +K - lifetime |
| title_full_unstemmed | Measurement of the effective B s 0→K +K - lifetime |
| title_short | Measurement of the effective B s 0→K +K - lifetime |
| title_sort | measurement of the effective b s 0 k k lifetime |
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