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Measurement of the CP-Violating Phase ϕ[subscript s] in [bar over B][superscript 0][subscript s] → D[superscript +][subscript s] D[superscript −][subscript s]

Author(s)
Counts, Ian Thomas Hunt; Ilten, Philip J; Williams, Michael
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Abstract
We present a measurement of the CP-violating weak mixing phase φs using the decay [bar over B][superscript 0][subscript s] → D[superscript +][subscript s]D[superscript -][subscript s] in a data sample corresponding to 3.0fb[superscript -1] of integrated luminosity collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not use the constraint |λ|=1 to allow for the presence of CP violation in decay, yields φs=0.02±0.17(stat)±0.02(syst)rad, |λ|=0.91-0.15+0.18(stat)±0.02(syst). This result is consistent with the standard model expectation.
Date issued
2014-11
URI
http://hdl.handle.net/1721.1/116669
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Aaij, R., et al. “Measurement of the CP-Violating Phase ϕ[subscript s] in [bar over B][superscript 0][subscript s] → D[superscript +][subscript s] D[superscript −][subscript s].” Physical Review Letters, vol. 113, no. 21, Nov. 2014. © 2014 CERN, for the LHCb Collaboration.
Version: Final published version
ISSN
0031-9007
1079-7114

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