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Article
Report number arXiv:1207.5991 ; LHCB-PAPER-2012-018 ; CERN-PH-EP-2012-198 ; LHCB-PAPER-2012-018 ; CERN-PH-EP-2012-198
Title Observation of B0D¯0K+K and evidence of Bs0D¯0K+K
Related titleObservation of the decay B0D¯0K+K and evidence of Bs0D¯0K+K
Author(s) LHCb Collaboration  ყველა 623 ავტორის ჩვენება
Publication 2012-09-26
Imprint 26 Jul 2012
Number of pages 15
In: Phys. Rev. Lett. 109 (2012) 131801
DOI 10.1103/PhysRevLett.109.131801
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; B physics ; branching fraction ; experimental results
Abstract The first observation of the decay B0D¯0K+K is reported from an analysis of 0.62 fb1 of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B0D¯0π+π to be B(B0D¯0K+K)B(B0D¯0π+π)=0.056±0.011±0.007, where the first uncertainty is statistical and the second is systematic. The significance of the signal is 5.8σ. Evidence, with 3.8σ significance, for Bs0D¯0K+K decays is also presented. The relative branching fraction is measured to be B(Bs0D¯0K+K)B(B0D¯0K+K)=0.90±0.27±0.20. These channels are of interest to study the mechanisms behind hadronic B decays, and open new possibilities for CP violation analyses with larger data sets.
Copyright/License preprint: © 2012-2024 CERN (License: CC-BY-3.0)
publication: © 2012-2024 CERN (License: CC-BY-3.0)



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


 ჩანაწერი შექმნილია 2012-07-26, ბოლოს შესწორებულია 2024-08-17


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