We present a measurement of the CP-violating weak mixing phase ϕs using the decay Bs(0)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 |lambda|=1 to allow for the presence of CP violation in decay, yields ϕs=0.02±0.17(stat)±0.02(syst)rad, |lambda|=0.91(-0.15)(+0.18)(stat)±0.02(syst). This result is consistent with the standard model expectation.
Measurement of the CP-violating phase ϕs in Bs(0)Ds(+)Ds(-) decays
CENCI, RICCARDO;MARINO, PIETRO;MORELLO, MICHAEL JOSEPH;
2014
Abstract
We present a measurement of the CP-violating weak mixing phase ϕs using the decay Bs(0)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 |lambda|=1 to allow for the presence of CP violation in decay, yields ϕs=0.02±0.17(stat)±0.02(syst)rad, |lambda|=0.91(-0.15)(+0.18)(stat)±0.02(syst). This result is consistent with the standard model expectation.File in questo prodotto:
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