Authors: Martin Jung Antonio Pich Paula Tuzón
Publish Date: 2010/11/04
Volume: 2010, Issue: 11, Pages: 3-
Abstract
The alignment in flavour space of the Yukawa matrices of a general twoHiggsdoublet model results in the absence of treelevel flavourchanging neutral currents In addition to the usual fermion masses and mixings the aligned Yukawa structure only contains three complex parameters ς f which are potential new sources of CP violation 1 For particular values of these three parameters all known specific implementations of the model based on discrete mathcalZ 2 symmetries are recovered One of the most distinctive features of the twoHiggsdoublet model is the presence of a charged scalar H ± In this work we discuss its main phenomenological consequences in flavourchanging processes at low energies and derive the corresponding constraints on the parameters of the aligned twoHiggsdoublet model
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