Measurement of the CP-violating phase φs in B-s0→J/ψπ+π- decays

The LHCb Collaboration

doi:10.1016/j.physletb.2014.06.079

Measurement of the CP-violating phase φ_s in B^-_s⁰→J/ψπ⁺π^- decays

The LHCb Collaboration

Research output: Contribution to journal › Article › Research › peer-review

71 Citations (Scopus)

Abstract

The mixing-induced CP-violating phaseφsin Bs0 and B-s0 decays is measured using the J/ψπ +π -final state in data, taken from 3 fb-1of 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 phaseφs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.

Original language	English
Pages (from-to)	186-195
Number of pages	10
Journal	Physics Letters B
DOIs	https://doi.org/10.1016/j.physletb.2014.06.079
Publication status	Published - 2014
Externally published	Yes

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10.1016/j.physletb.2014.06.079

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Cite this

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title = "Measurement of the CP-violating phase φs in B-s0→J/ψπ+π- decays",

abstract = "The mixing-induced CP-violating phaseφsin Bs0 and B-s0 decays is measured using the J/ψπ +π -final state in data, taken from 3 fb-1of 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 phaseφs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.",

author = "Ulrik Egede and \{The LHCb Collaboration\}",

year = "2014",

doi = "10.1016/j.physletb.2014.06.079",

language = "English",

pages = "186--195",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

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T1 - Measurement of the CP-violating phase φs in B-s0→J/ψπ+π- decays

AU - Egede, Ulrik

AU - The LHCb Collaboration

PY - 2014

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N2 - The mixing-induced CP-violating phaseφsin Bs0 and B-s0 decays is measured using the J/ψπ +π -final state in data, taken from 3 fb-1of 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 phaseφs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.

AB - The mixing-induced CP-violating phaseφsin Bs0 and B-s0 decays is measured using the J/ψπ +π -final state in data, taken from 3 fb-1of 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 phaseφs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.

U2 - 10.1016/j.physletb.2014.06.079

DO - 10.1016/j.physletb.2014.06.079

M3 - Article

SN - 0370-2693

SP - 186

EP - 195

JO - Physics Letters B

JF - Physics Letters B

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