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Measurement of CP violation parameters in B0→DK*0 decays
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Craik, Daniel, Dossett, D., Gershon, T. J., Kreps, Michal, Langenbruch, Christoph, Latham, Thomas, O'Hanlon, Daniel P., Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte and Whitehead, M. (Mark)). (2014) Measurement of CP violation parameters in B0→DK*0 decays. Physical Review D (Particles, Fields, Gravitation and Cosmology), Volume 90 (Number 11). Article number 112002 . doi:10.1103/PhysRevD.90.112002
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WRAP_PhysRevD.90.112002.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution. Download (1051Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevD.90.112002
Abstract
An analysis of B0→DK*0 decays is presented, where D represents an admixture of D0 and D¯0 mesons reconstructed in four separate final states: K−π+, π−K+, K+K− and π+π−. The data sample corresponds to 3.0 fb−1 of proton-proton collision, collected by the LHCb experiment. Measurements of several observables are performed, including CP asymmetries. The most precise determination is presented of rB(DK*0), the magnitude of the ratio of the amplitudes of the decay B0→DK+π− with a b→u or a b→c transition, in a Kπ mass region of ±50 MeV/c2 around the K∗(892) mass and for an absolute value of the cosine of the K*0 helicity angle larger than 0.4.
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