6533b872fe1ef96bd12d2be9

RESEARCH PRODUCT

Measurement of the CP-Violating Phase phi(s) in (B)over-bar(s)(0) -> Ds+Ds- Decays

Lhcb CollaborationFernando Martínez VidalArantza Oyanguren CamposPablo Ruiz VallsCarlos Sánchez Mayordomo

subject

High Energy Physics::PhenomenologyHigh Energy Physics::ExperimentFísica nuclearAstrophysics::Cosmology and Extragalactic Astrophysics

description

We present a measurement of the CP-violating weak mixing phase phi(s) using the decay (B) over bar (0)(s) -> Ds+Ds- in a data sample corresponding to 3.0 fb(-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 vertical bar lambda vertical bar = 1 to allow for the presence of CP violation in decay, yields phi(s) = 0.02 +/- 0.17(stat) +/- 0.02(syst) rad, vertical bar lambda vertical bar = 0.91(-0.15)(+0.18)(stat) +/- 0.02(syst). This result is consistent with the standard model expectation

yearjournalcountryeditionlanguage
2014-01-01
10.1103/physrevlett.113.211801http://hdl.handle.net/10550/52830