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Report number arXiv:1207.5993 ; LHCB-PAPER-2012-013 ; CERN-PH-EP-2012-172 ; LHCB-PAPER-2012-013 ; CERN-PH-EP-2012-172
Title Measurement of the effective B0sK+K lifetime
Author(s) LHCb Collaboration  Show all 618 authors
Publication 2012-10-02
Imprint 25 Jul 2012
Number of pages 8
Note Comments: 10 pages, 2 figures.
10 pages, 2 figures. Published in Physics Letters B, Volume 716, Issues 3 to 5, 2 October 2012, Pages 393 to 400
In: Phys. Lett. B 716 (2012) 393-400
DOI 10.1016/j.physletb.2012.08.033
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; B physics ; lifetime ; experimental results
Abstract A precise determination of the effective B0sK+K lifetime can be used to constrain contributions from physics beyond the Standard Model in the B0s 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 fb1 of data recorded by the LHCb experiment, the effective B0sK+K lifetime is measured as 1.455±0.046(stat.)±0.006(syst.)ps.
Related document Supersedes LHCb-CONF-2012-001
Copyright/License publication: © 2012-2025 CERN (License: CC-BY-3.0)
preprint: © 2012-2025 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: u.egede@imperial.ac.uk


 Záznam vytvorený 2012-07-25, zmenený 2024-08-17


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