Three possibilities for the origin of CP violation are discussed: (1) the Standard Model in which all CP violation is due to one parameter in the CKM matrix, (2) the superweak model in which all CP violation is due to new physics and (3) the Standard Model plus new physics. A major goal of B physics is to distinguish these possibilities. CP violation implies time reversal violation (TRV) but di...

We review theoretical and experimental results on CP violation summarizing the discussions in the working group on CP violation at the UK phenomenology workshop 2000 in Durham. ‡ To Appear in Journal of Physics G; Contribution of Working Group 4 to the UK Phenomenology Workshop on Heavy Flavour and CP Violation, Durham, 17 22 September 2000 CP Violation, UK Phenomenology Workshop 2000 2

We study CP violation in a multi-Higgs doublet model based on a S3 × Z3 horizontal symmetry where CKM phase is not the principal source of CP violation. We consider two mechanisms for CP violation in this model: a) CP violation due to complex Yukawa couplings; and b) CP violation due to scalar-pseudoscalar Higgs boson mixings. Both mechanisms can explain the observed CP violation in the neutral...