Portoroz 2013: Probing the Standard Model and New Physics at Low and High Energies

Session

Flavor and CP II

15 Apr 2013, 11:00

James Cook (Portoroz, Slovenia)

Conveners

Flavor and CP II

• Borut Bajc (J. Stefan Institute, Ljubljana)

13. The anatomy of quark flavour observables in the flavour precision era

Fulvia De Fazio (INFN - Sezione di Bari)

15/04/2013, 11:00

I shall discuss strategies towards the indirect detection of new physics from flavour observables.

8. Probing New Physics with B^0_s -> mu+ mu-

Robert Fleischer (Nikhef and Vrije Universiteit Amsterdam)

15/04/2013, 11:22

The rare decay $B_s \to \mu^+\mu^-$ plays a key role for the testing of the Standard Model. It is discussed that the sizable decay width difference $\Delta\Gamma_s$ of the $B_s$-meson system affects this channel. As a consequence, its calculated Standard Model branching ratio has to be upscaled by about 10% to $(3.56\pm0.18)\times 10^{-9}$. This prediction is the reference value for the...

44. B_q -> mu+ mu- and electroweak interactions

Martin Gorbahn (Liverpool University)

15/04/2013, 11:44

The B_q to mu^+ mu^- theory prediction is sensitive to the renormalisation scheme used for sin_W. The scheme ambiguity is the source of the dominant theory uncertainty in the standard model. Additionally the renormalization is rather involved in new physics models where M_Z cos_W = M_W does not hold at tree level. In this talk I will present the results of a two-loop electroweak...

15. CP phases from non-abelian discrete symmetries

Claudia Hagedorn (University of Padua and SISSA)

15/04/2013, 12:06

I will discuss possibilities to predict CP phases in the lepton sector with the help of non-abelian discrete flavour symmetries (and CP symmetries). I will show that the breaking of a non-abelian discrete flavour group to residual symmetries in the charged lepton and neutrino sectors not only allows for predictions of the mixing angles, but also of the Dirac phase. Furthermore, I will present...

62. New physics from B -> D* tau nu

Ivan Nisandzic (J. Stefan Institute)

15/04/2013, 12:28

Semi-leptonic B decays are important test of the Standard Model (SM) and present the possibility to explore the eects of physics Beyond Standard Model (BSM). Decays involving tau leptons in the nal state are interesting due to the tau mass eects which allow to probe the contributions to the decay rate which are not present in the decay containing light lepton in nal state. Recently,...