Conveners
Flavor I
- Reinard Primulando (J)
Prof.
David London
(Universite de Montreal)
06/05/2013, 14:00
Flavor Physics
parallel talk
The decay Bs -> J/psi phi is used for measuring 2beta_s, the phase of Bs-Bsbar mixing. The amplitude for this decay is dominated by the colour-suppressed tree diagram, but also contains "penguin pollution" (PP) due to gluonic and electroweak penguin diagrams. The PP leads to a theoretical error in the extraction of 2beta_s from the data. In the SM, it is estimated that the PP is negligible,...
Robert Andrew Currie
(University of Edinburgh (GB))
06/05/2013, 14:15
Flavor Physics
parallel talk
The study of CP violation in Bs oscillations is one of the
key goals of the LHCb experiment. Effects are predicted to be very
small in the Standard Model but can be significantly enhanced in many
models of new physics. We present the world’s best measurement of the
CP-violating phase φs using B0s → J/ψφ and B0s → J/ψππ decays, and a
first study of mixing-induced CP violation in the decay B0s → φφ.
Edmund Smith
(University of Oxford (GB))
06/05/2013, 14:30
Flavor Physics
parallel talk
The angle γ of the CKM unitarity triangle remains the least precisely measured parameter of the CKM mixing matrix. The precision measurement of this parameter is one of the main goals of the LHCb experiment. We present a wide range of measurements of CP violation and partial rates in B→DK decays, as well as the latest LHCb measurement of γ combining all the individual inputs.
Bhubanjyoti Bhattacharya
(University of Montreal)
06/05/2013, 14:45
Flavor Physics
parallel talk
The value of the weak phase $\gamma$ extracted using conventional methods suffer from large statistical uncertainties. $\gamma$ can also be extracted directly by studying Dalitz plots for charmless three-body $B$ decays and here the statistical uncertainty is much smaller due to the large number of independent measurements. I will describe a recent work in which we extract $\gamma$ using data...
Zhou Xing
(Syracuse University (US))
06/05/2013, 15:00
Flavor Physics
parallel talk
LHCb has recorded large samples of semileptonic B decays. These provide potential to study CP violation effects in the B0 and Bs0 systems. Decay time-integrated or time-dependent asymmetries between charge-conjugate final states probe CP violation in B(s)0 mixing through the measurement of the parameter Afs (sometimes referred to as Asl). These measurements rely on data-driven techniques to...
Marc Grabalosa Gandara
(Univ. Blaise Pascal Clermont-Fe. II (FR))
06/05/2013, 15:15
Flavor Physics
parallel talk
Decays of B hadrons without charmed particles in the final state offer rich opportunities to test the Standard Model. For example, CP violation in charmless charged two-body and three-body B decays provides ways to measure the CKM angle γ and to search for New Physics. The angular distributions of decays to vector-vector final states provide additional interesting observables. We present the...
Nick Torr
(University of Oxford (GB))
06/05/2013, 15:30
Flavor Physics
parallel talk
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to search for direct and indirect CP violation in charm, and to measure D0 mixing parameters. Preliminary measurements from several decay modes are presented, with complementary time-dependent and time-integrated analyses.
Chee Sheng Fong
(INFN - Laboratori Nazionali di Frascati)
06/05/2013, 15:45
Flavor Physics
parallel talk
We show that there is no strong CP violation in the model with quark-family symmetry which is spontaneously broken without the need of postulating a Peccei-Quinn symmetry.
