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Measurement of the CP-violating phase φ[subscript s] in [bar over B][superscript 0][subscript s] → J/ψπ[superscript +]π[supercript −] decays

Author(s)
Counts, Ian Thomas Hunt; Ilten, Philip J; Williams, Michael
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Abstract
The mixing-induced CP-violating phase φ[subscript s] in B[superscript 0][subscript s] and [bar over B][superscript 0][subscript s] decays is measured using the J/ψ π[superscript +]π[superscript -] final state in data, taken from 3 fb[superscript -1] of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phase φ[subscript s] = 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements. © 2014 The Authors.
Date issued
2014-07
URI
http://hdl.handle.net/1721.1/116661
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
Aaij, R., et al. “Measurement of the CP-Violating Phase ϕ[subscript s] in [bar over B][superscript 0][subscript s] → J/ψπ[superscript +]π[superscript −] Decays.” Physics Letters B, vol. 736, Sept. 2014, pp. 186–95. © 2014 The Authors
Version: Final published version
ISSN
0370-2693

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