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Article
Report number arXiv:1503.07055 ; CERN-PH-EP-2015-064 ; LHCB-PAPER-2015-005 ; LHCB-PAPER-2015-005 ; CERN-PH-EP-2015-064
Title Measurement of the time-dependent CP asymmetries in Bs0J/ψKS0
Author(s) LHCb Collaboration  Εμφάνιση και των 703 συγγραφέων
Publication 2015-06-18
Imprint 25 Mar 2015
Number of pages 23
Note 18+5 pages, 5 figures, matching published version
In: JHEP 06 (2015) 131
DOI 10.1007/JHEP06(2015)131
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; B physics ; branching fraction ; CP violation
Abstract The first measurement of decay-time-dependent CP asymmetries in the decay Bs0J/ψKS0 and an updated measurement of the ratio of branching fractions B(Bs0J/ψKS0)/B(Bd0J/ψKS0) are presented. The results are obtained using data corresponding to an integrated luminosity of 3.0 fb1 of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The results on the CP asymmetries are AΔΓ(Bs0J/ψKS0)=0.490.65+0.77(stat)±0.06(syst), Cdir(Bs0J/ψKS0)=0.28±0.41(stat)±0.08(syst) and Smix(Bs0J/ψKS0)=0.08±0.40(stat)±0.08(syst). The ratio B(Bs0J/ψKS0)/B(Bd0J/ψKS0) is measured to be 0.0431±0.0017(stat)±0.0012(syst)±0.0025(fs/fd), where the last uncertainty is due to the knowledge of the Bs0 and Bd0 production fractions.
Copyright/License preprint: © 2015-2024 CERN (License: CC-BY-4.0)
publication: © 2015-2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³



Corresponding record in: Inspire
Email contact: carnita.hervet@cern.ch


 Δημιουργία εγγραφής 2015-03-25, τελευταία τροποποίηση 2024-08-17


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