DISCRETE 2010

Session

T, C, P, CP symmetries, accidental symmetries (B, L cons.) (9)

10 Dec 2010, 14:50

CNR headquarter

50. Probing New Physics in Electroweak Penguins through $B_d$ and $B_s$ decays

Dr Leonardo Vernazza (Johannes Gutenberg Universität Mainz)

10/12/2010, 14:50

T, C, P, CP symmetries, Accidental symmetries (B, L conservation)

The large discrepancy between theory and experiment observed in $A_{\rm CP}(B^-\to\pi^0 K^-)-A_{\rm CP}(\bar{B}^0\to\pi^+ K^-)$ can be solved with the introduction of a new electroweak penguin amplitude. Motivated by this result, we analyze the $\bar B_s\to\phi\rho^0$ and $\bar B_s\to\phi\pi^0$ decays which are dominated by the electroweak penguins, and show that in presence of a new...

39. Bs decays at Belle

Mr Remi Louvot (Ecole Polytechnique Federale de Lausanne (EPFL))

10/12/2010, 15:15

T, C, P, CP symmetries, Accidental symmetries (B, L conservation)

The B-factories have successfully exploited the unique advantages of the Upsilon(4S) resonance to study many aspects of Bd and Bu mesons. The Upsilon(10860) (aka Upsilon(5S)) resonance, which is above mass threshold for the Bs and shares many of the same advantages, has been relatively unexplored. The Belle experiment has collected more than 120 fb-1 at the Upsilon(10860). Recent...

61. New measurement of the B0_s mixing phase and observation of suppressed Bs decays at CDF

Ms Louise Oakes (Technische Universität München)

10/12/2010, 15:40

T, C, P, CP symmetries, Accidental symmetries (B, L conservation)

The CDF experiment presents improved bounds on the CP-violating phase beta_s and on the decay-width difference DeltaGamma_s of the neutral B_s0 meson system. We use 6500 B_s0 --> J/psi Phi decays collected by the dimuon trigger and reconstructed in a sample corresponding to 5.2 fb^{-1} of dat Besides exploiting a two-fold increase in statistics with respect to the previous measurement,...

11. Prospects for CP violation in B0_s -> J/psi phi from first LHCb data

Dr Olivier Leroy (CPPM CNRS/IN2P3 and Aix-Marseille University, France)

10/12/2010, 16:05

T, C, P, CP symmetries, Accidental symmetries (B, L conservation)

The determination of the CP-violating phase in B0_s -> J/psi phi decays is one of the key goals of the LHCb experiment. Its value is predicted to be very small in the Standard Model but can be significantly enhanced in many models of New Physics. The steps towards a precise determination of this phase with a flavour-tagged, time-dependent, angular analysis of the decay B0_s -> J/psi phi will...