Anatomy of mixinginduced CP asymmetries in leftright symmetric models with spontaneous CP violation
Abstract
We investigate the pattern of CP violation in K^{0} K ^{0}¯, B^{0}_{d} B ^{0}_{d}¯ and B^{0}_{s} B ^{0}_{s}¯ mixing in a symmetrical SU(2) _{L}×SU(2) _{R}×U(1) model with spontaneous CP violation. From a set of fixed quark masses and mixings, we calculate the phases of the left and right quark mixing matrices beyond the small phase approximation and perform a careful analysis of all relevant restrictions on the model's parameters from Δm_{K}, Δm_{B}, ɛ, ɛ'/ ɛ and the CP asymmetry a_{CP} in B^{0}_{d}→ J/ ψK^{0}_{S}. Of 64 possible sets of phases, most are excluded because they imply opposite signs for Re ɛ and a_{CP}. For the one remaining set, a_{CP} is predicted to be small (⩽0.1) for the chosen input quark masses and mixings. Barring an instability with respect to these input values, the model is thus soon to be critically tested at B factories. The mass of the righthanded charged gauge boson, M_{2}, is restricted to be in the range 2.75 to 13 TeV, and the mass of the flavourchanging neutral Higgs bosons, M_{H}, in 10.2 to 14.6 TeV. This means in particular that the decoupling limit M_{2}, M_{H}→∞ is already excluded by experiment.
 Publication:

Nuclear Physics B
 Pub Date:
 April 2000
 DOI:
 10.1016/S05503213(99)00824X
 arXiv:
 arXiv:hepph/9910211
 Bibcode:
 2000NuPhB.572....3B
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 33 pages Latex with 11 PostscriptFigures (included)