Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/195720
Title: | Measurement of the effective B0s→K+K− lifetime |
Author: | Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni LHCb Collaboration |
Keywords: | Física de partícules Mesons (Física nuclear) Experiments Gran Col·lisionador d'Hadrons Particle physics Mesons (Nuclear physics) Experiments Large Hadron Collider (France and Switzerland) |
Issue Date: | Jul-2012 |
Publisher: | Elsevier B.V. |
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. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.physletb.2012.08.033 |
It is part of: | Physics Letters B, 2012, vol. 716, p. 393-400 |
URI: | http://hdl.handle.net/2445/195720 |
Related resource: | https://doi.org/10.1016/j.physletb.2012.08.033 |
ISSN: | 0370-2693 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
619628.pdf | 391.6 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.