Measurement of CP violation parameters in B-0 -> DK*(0) decays
- Aaij, R.
- Adeva, B.
- Adinolfi, M.
- Affolder, A.
- Ajaltouni, Z.
- Akar, S.
- Albrecht, J.
- Alessio, F.
- Alexander, M.
- Ali, S.
- Alkhazov, G.
- Cartelle, P. Alvarez
- Alves, A. A.
- Amato, S.
- Amerio, S.
- Amhis, Y.
- An, L.
- Anderlini, L.
- Anderson, J.
- Andreassen, R.
- Andreotti, M.
- Andrews, J. E.
- Appleby, R. B.
- Gutierrez, O. Aquines
- Archilli, F.
- Artamonov, A.
- Artuso, M.
- Aslanides, E.
- Auriemma, G.
- Baalouch, M.
- Bachmann, S.
- Back, J. J.
- Badalov, A.
- Balagura, V.
- Baldini, W.
- Barlow, R. J.
- Barschel, C.
- Barsuk, S.
- Barter, W.
- Batozskaya, V.
- Battista, V.
- Bay, A.
- Beaucourt, L.
- Beddow, J.
- Bedeschi, F.
- Bediaga, I.
- Belogurov, S.
- Belous, K.
- Onderwater, G.
- Pellegrino, A.
DOIAbstract
An analysis of B-0 --> DK*(0) decays is presented, where D represents an admixture of D-0 and (D) over bar (0) mesons reconstructed in four separate final states: K-pi(+), pi K--(+), K+K- and pi(+)pi(-). 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 r(B)(DK*(0)), the magnitude of the ratio of the amplitudes of the decay B-0 --> DK+pi(-) with a b --> u or a b --> c transition, in a K pi mass region of +/- 50 MeV/c(2) around the K*(892) mass and for an absolute value of the cosine of the K*(0) helicity angle larger than 0.4.</p
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