# ICHEP2012

Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

## Global fits of the unitarity triangle and search for new physics in pseudoscalar-pseudoscalar final states

Jul 7, 2012, 6:00 PM
1h
Melbourne Convention and Exhibition Centre

#### Melbourne Convention and Exhibition Centre

Melbourne Australia
Board: 35
Poster Sessions Track 7. CP Violation, CKM, Rare Decays, Meson Spectroscopy

### Speaker

Prof. Eigen Gerald (University of Bergen (NO))

### Description

We have updated our unitary triangle fitting program based on the scan method\footnote{Global fits of the CKM matrix. G. Eigen, G.P. Dubois-Felsmann, D.G. Hitlin, F.C. Porter. Eur.Phys.J. C33 (2004) S644, e-Print: hep-ex/0312062.} to constrain the $\bar{\rho}- \bar{\eta}$ plane using the standard input measurements (CKM matrix elements, $\sin 2 \beta$, $B^0_{d(s)}$ mixing, and $\epsilon_K$) as well as branching fraction and $C\!P$ asymmetry measurements of $B$ decays to all light pseudoscalar-pseudoscalar, pseudoscalar-vector, vector-vector, and $a_1$ pseudoscalar mesons to determine $\alpha$, $D^{(*)} K^{(*)}$ mode to determine $\gamma$, and $D^{(*)} \pi$ and $D\rho$ decays to determine $2 \beta+\gamma$. We parameterize the individual decay amplitudes in terms of color-allowed tree, color-suppressed tree, penguin, singlet penguin, electroweak penguin, as well as the $W$-exchange and $W$-annihilation amplitudes. With this parameterization, we obtain a good fit to the measured branching fractions and $C\!P$ asymmetries of all $B$ decays to pseudoscalar-pseudoscalar mesons without any New Physics contributions. This simultaneous fit allows us to determine the correlation between $\alpha$ and $\beta$.

### Primary author

Prof. Eigen Gerald (University of Bergen (NO))

### Co-authors

Prof. David Hitlin (Caltech) Prof. Frank Porter (Caltech) Dr Gregory Dubois-Felsmann (SLAC)

 Slides