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Article
Report number arXiv:1407.6211 ; LHCB-PAPER-2014-017 ; CERN-PH-EP-2014-166 ; LHCB-PAPER-2014-017 ; CERN-PH-EP-2014-166
Title Measurement of CP violation and constraints on the CKM angle γ in B±DK± with DK0Sπ+π decays
Author(s) LHCb collaboration  Εμφάνιση και των 698 συγγραφέων
Publication 2014-11
Imprint 23 Jul 2014
Number of pages 25
Note Comments: 28 pages, 7 figures
28 pages, 7 figures
In: Nucl. Phys. B 888 (2014) 169-193
DOI 10.1016/j.nuclphysb.2014.09.015
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; CKM angle alpha ; LHCb
Abstract A model-dependent amplitude analysis of B±DK± with DK0Sπ+π decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1 fb1, recorded by LHCb at a centre-of-mass energy of 7 TeV in 2011. Values of the CP violation observables x± and y±, which are sensitive to the CKM angle γ, are measured to be x=+0.027±0.044+0.0100.008±0.001,y=+0.013±0.048+0.0090.007±0.003,x+=0.084±0.045±0.009±0.005,y+=0.032±0.048+0.0100.009±0.008, where the first uncertainty is statistical, the second systematic and the third arises from the uncertainty of the DK0Sπ+π amplitude model. The value of γ is determined to be (84+4942), including all sources of uncertainty. Neutral D meson mixing is found to have negligible effect.
Copyright/License publication: © 2014-2025 CERN (License: CC-BY-3.0), sponsored by SCOAP³
preprint: © 2014-2025 CERN (License: CC-BY-4.0)



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


 Δημιουργία εγγραφής 2014-07-24, τελευταία τροποποίηση 2024-08-17


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