Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Update of the Unitarity Triangle Analysis

Jul 16, 2009, 9:15 AM
Large Lecture - Hall A (Kraków, Poland)

Large Lecture - Hall A

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Flavour Physics II. Flavour Physics


Dr Cecilia Tarantino (University Roma Tre)


We present the update of the Unitarity Triangle (UT) analysis within the Standard Model (SM) and beyond. Within the SM, combining the direct measurements on sides and angles, the UT turns out to be overconstraint in a consistent way, showing that the CKM matrix is the dominant source of flavour mixing and CP-violation and that New Physics (NP) effects can appear at most as small corrections to the CKM picture. Generalizing the UT analysis to investigate NP effects, constraints on b -> s transitions are also included and both CKM and NP parameters are fitted simultaneously. While no evidence of NP effects is found in K- \bar K and Bd-\bar Bd mixing, in the Bs- \bar Bs mixing an hint of NP is found. The UT analysis beyond the SM also allows us to derive bounds on the coefficients of the most general DeltaF = 2 effective Hamiltonian, that can be translated into bounds on the NP scale.

Primary authors

Prof. Achille Stocchi (LAL-IN2P3 Orsay) Dr Carlo Schiavi (University of Genova) Dr Cecilia Tarantino (University Roma Tre) Prof. Enrico Franco (University of Rome "La Sapienza") Dr Fabrizio Parodi (University of Genova) Prof. Guido Martinelli (University of Rome "La Sapienza") Prof. Luca Silvestrini (INFN Sezione di Roma) Dr Marcella Bona (CERN) Prof. Marco Ciuchini (INFN Sezione di Roma Tre) Dr Maurizio Pierini (CERN) Prof. Vincenzo Vagnoni (INFN Sezione of Bologna) Dr Viola Sordini (ETH Zurich) Prof. Vittorio Lubicz (University Roma Tre)

Presentation materials