Measurement of the CP-Violating Phase φs in B¯s0 → Ds+ Ds- Decays

The LHCb Collaboration

doi:10.1103/PhysRevLett.113.211801

Measurement of the CP-Violating Phase φ_s in B^¯_s⁰ → D_s⁺ D_s^- Decays

The LHCb Collaboration

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

57 Citations (Scopus)

Abstract

We present a measurement of the CP-violating weak mixing phase φs using the decay B¯s0→Ds+Ds- in a data sample corresponding to 3.0fb-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.

Original language	English
Article number	211801
Number of pages	9
Journal	Physical Review Letters
Volume	113
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.113.211801
Publication status	Published - 2014
Externally published	Yes

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10.1103/PhysRevLett.113.211801

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Cite this

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title = "Measurement of the CP-Violating Phase φs in B¯s0 → Ds+ Ds- Decays",

abstract = "We present a measurement of the CP-violating weak mixing phase φs using the decay B¯s0→Ds+Ds- in a data sample corresponding to 3.0fb-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. ",

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

year = "2014",

doi = "10.1103/PhysRevLett.113.211801",

language = "English",

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AB - We present a measurement of the CP-violating weak mixing phase φs using the decay B¯s0→Ds+Ds- in a data sample corresponding to 3.0fb-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.

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