Study on the ϒ(1 S )→ B c D s decay

B 0 s → D − s a + 1 decay channel in the B 0 s - mixing studies

Comment on D ∗ s → D s π 0 Decay

We calculate the rate for D s → Dsπ decay using Chiral Perturbation Theory. This isospin violating process results from π η mixing, and its amplitude is proportional to (md − mu)/ ( ms − (mu + md)/2 ) . Experimental information on the branching ratio for D s → Dsπ can provide insight into the pattern of SU(3) violation in radiative D decays.

First Observation of the Decay B 0 s ! D s D s and Measurement of Its Branching Ratio

T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, M. Aoki, G. Apollinari, A. Apresyan, T. Arisawa, A. Artikov, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar, P. Azzi-Bacchetta, P. Azzurri, N. Bacchetta, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant, V. Bartsch, G. Bauer, P.-H. Beauchemin...

QCD sum rules analysis of the rare radiative B c → D ∗ s γ decay

In this work, the radiative Bc → D sγ decay is investigated in the framework of QCD sum rules. The transition form factors responsible for the decay are calculated. The total branching ratio for this decay is estimated to be in the order of 10−5, so this decay can be measurable at LHC in the near future. e-mail: [email protected] e-mail: [email protected]

Inclusive decay of B mesons into Ds or D ∗ s

We compute the inclusive decay rates b → D − s (D * − s)c including lowest order QCD corrections on the quark legs, and compare with existing CLEO data. Unlike the short distance QCD corrections, that are of higher order, these corrections are of order α s. In the on-shell renormalization scheme and for α s (m b) ∼ = 0.2 we find a correction of −10 % to the inclusive rate computed using factori...