An effective look at right-handed currents and quark flavour mixing
Abstract
We present an effective theory approach for a model with a left-right symmetric flavour group broken only by the Yukawa couplings. An underlying SU(2)_L x SU(2)_R x U(1)_{B-L} global symmetry is assumed without specifying the fundamental theory. The model is motivated by the fact that the |V_{ub}| problem can be solved by assuming the existence of right-handed (RH) currents. In this framework the flavour mixing in the RH sector is given by a new mixing matrix. After a short introduction of the model, we show how this RH mixing matrix can be determined by theory, experimental data and phenomenological constraints. We summarize the results of the RH contribution to flavour mixing in Delta F=2 processes. Furthermore we briefly discuss Z -> b bbar and the rare decays B_{s,d} -> mu+ mu-, B -> {X_s,K,K*} nu nubar and K -> pi nu nubar with corresponding correlations.
Keywords
Cite
@article{arxiv.1011.5368,
title = {An effective look at right-handed currents and quark flavour mixing},
author = {Katrin Gemmler},
journal= {arXiv preprint arXiv:1011.5368},
year = {2010}
}
Comments
Proceedings of CKM2010, the 6th International Workshop on the CKM Unitarity Triangle, University of Warwick, UK, 6-10 September 2010