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http://hdl.handle.net/2445/195720
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DC Field | Value | Language |
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dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | LHCb Collaboration | - |
dc.date.accessioned | 2023-03-21T12:00:11Z | - |
dc.date.available | 2023-03-21T12:00:11Z | - |
dc.date.issued | 2012-07 | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.uri | http://hdl.handle.net/2445/195720 | - |
dc.description.abstract | A precise determination of the effective B0 s → K + K − lifetime can be used to constrain contributions from physics beyond the Standard Model in the B0 s 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 B0 s → K + K − lifetime is measured as 1.455 ± 0.046 (stat.) ± 0.006 (syst.) ps. © 2012 CERN. Published by Elsevier B.V. All rights reserved. | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.physletb.2012.08.033 | - |
dc.relation.ispartof | Physics Letters B, 2012, vol. 716, p. 393-400 | - |
dc.relation.uri | https://doi.org/10.1016/j.physletb.2012.08.033 | - |
dc.rights | (c) Elsevier B.V., 2012 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Mesons (Física nuclear) | - |
dc.subject.classification | Experiments | - |
dc.subject.classification | Gran Col·lisionador d'Hadrons | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Mesons (Nuclear physics) | - |
dc.subject.other | Experiments | - |
dc.subject.other | Large Hadron Collider (France and Switzerland) | - |
dc.title | Measurement of the effective B0s→K+K− lifetime | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 619628 | - |
dc.date.updated | 2023-03-21T12:00:11Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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619628.pdf | 391.6 kB | Adobe PDF | View/Open |
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