Measurement of CP violation parameters in B0->D K*0 decays

Abstract

An analysis of B0->D K*0 decays is presented, where D represents an admixture of D0 and D0b mesons reconstructed in four separate final states: K-pi+, pi-K+, K+K- and pi+pi-. The data sample corresponds to 3.0fb-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->D K+ pi- with a b->u or a b->c transition, in a K pi 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.

arXiv comment27 pages, 6 figures

References in corpus (24)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• PHOTOS Monte Carlo: a precision tool for QED corrections in Z and W decays
• sPlot: a statistical tool to unfold data distributions
• The LHCb Trigger and its Performance in 2011
• Performance of the LHCb RICH detector at the LHC
• Enhanced CP Violation with $B\to K{D}^0({\overline{D}}^0)$ Modes and Extraction of the CKM Angle gamma
• Kernel Estimation in High-Energy Physics
• Performance of the LHCb Vertex Locator
• Efficient, reliable and fast high-level triggering using a bonsai boosted decision tree
• Improved Methods for Observing CP Violation in B+/- --> K+/- D0 and Measuring the CKM Phase gamma
• Measurement of b hadron production fractions in 7 TeV pp collisions
• The ultimate theoretical error on gamma from B -> D K decays
• Improving bounds on $\gamma$ in $B^{\pm }\to D{K}^{\pm }$ and $B^{\pm ,0}\to D{X}_s^{\pm ,0}$
• First evidence of direct CP violation in charmless two-body decays of Bs mesons
• Measurement of the CKM angle gamma from a combination of B->Dh analyses
• Observation of direct CP violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle gamma with B+- --> D(*)K(*)+- decays
• Measurement of CP observables in B+- --> D_CP K+- decays and constraints on the CKM angle gamma
• Effect of D-Dbar mixing in the extraction of gamma with B- -> D0 K- and B- -> D0 pi- decays
• First observation of the decay ${\bar{B}}_s^0\to D^0{K}^{\ast 0}$ and a measurement of the ratio of branching fractions $\frac{\mathcal{B}({\bar{B}}_s^0\to D^0{K}^{\ast 0})}{\mathcal{B}({\bar{B}}^0\to D^0{\rho }^0)}$
• Search for b-> u transitions in B0 -> D0 K*0 decays
• Measurement of CP observables in B0 -> D K*0 with D -> K+ K-
• Search for the decay $B^0\to D{K}^{\ast 0}$ followed by $D\to K^{-}{\pi }^{+}$

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