CKM Parameters and Rare B Decays

Abstract

Measurements of the angles and sides of the unitarity triangle and of the rates of rare B meson decays are crucial for the precise determination of Standard Model parameters and are sensitive to the presence of new physics particles in the loop diagrams. In this paper the recent measurements performed in this area by Babar and Belle will be presented. The direct measurement of the angle alpha is for the first time as precise as the indirect determination. The precision of the V_ub determination has improved significantly with respect to previous measurement. New limits on B->tau nu decays are presented, as well as updated measurements on b->s radiative transitions and a new observation of b->d gamma transition made by Belle.

Talk presented at the Lepton-Photon 2005 Symposium, June 30-July 5, Uppsala, Sweden. 14 pages, 13 figures

References in corpus (14)

• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• Global analysis of inclusive B decays
• The photon polarization in B -> X gamma in the standard model
• On the photon energy moments and their `bias' corrections in B -> X_s+γ
• Observation of B+ --> K1(1270)+ gamma
• Implication of the $B\to (\rho ,\omega )\gamma$ Branching Ratios for the CKM Phenomenology
• Measurement of |V_ub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays
• Branching Fractions and CP Asymmetries in B0 -> pi0pi0, B+ -> pi+pi0 and B+ -> K+pi0 Decays and Isospin Analysis of the B -> pipi System
• Two-Loop Relations for Heavy-Quark Parameters in the Shape-Function Scheme
• Improved Measurement of the CKM Angle alpha Using B0->rho+rho- Decays
• Determination of |Vub| from Measurements of the Electron and Neutrino Momenta in Inclusive Semileptonic B Decays
• Improved Measurements of CP-Violating Asymmetry Amplitudes in B0 -> pi+pi- Decays
• Study of B0 -> rho+-pi-+ Time-dependent CP Violation at Belle
• Measurement of Time-Dependent CP-Violating Asymmetry in B0 -> Ks pi0 gamma Decay

Cited by in corpus (1)

• Effect of the Charged Higgs Bosons in the Radiative Leptonic Decays of $B^{-}$ and $D^{-}$ Mesons