Abstract
An analysis of decays is presented, where represents an admixture of and mesons reconstructed in four separate final states: , , and . The data sample corresponds to of proton-proton collision, collected by the LHCb experiment. Measurements of several observables are performed, including asymmetries. The most precise determination is presented of , the magnitude of the ratio of the amplitudes of the decay with a or a transition, in a mass region of around the mass and for an absolute value of the cosine of the helicity angle larger than 0.4.
- Received 31 July 2014
DOI:https://doi.org/10.1103/PhysRevD.90.112002
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© 2014 CERN, for the LHCb Collaboration