TY - JOUR
T1 - Alternative theories of CP violation
AU - Barbieri, Riccardo
AU - Hall, Lawrence
AU - Stocchie, Achille
AU - Weiner, Neal
N1 - Funding Information:
This work was supported in part by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Division of High Energy Physics of the US Department of Energy under Contract DE-AC03-76SF00098 and in part by the National Science Foundation under grant PHY-95-14797.
PY - 1998/4/16
Y1 - 1998/4/16
N2 - Recent improvements to the limit of ΔMBs imply that pure superweak theories, while not excluded, no longer provide a good fit to the data. A class of general superweak theories is introduced in which all flavor changing interactions are governed by an approximate flavor symmetry which gives a "3 mechanism". These theories are in good agreement with data, and predict low values for |Vtd|, |Vub/Vcb|, B(K+ → π+̄v), ∈′/∈ and CP asymmetries in B decays, and high values for ΔMBs and fB√BB. An important example of such a theory is provided by weak scale supersymmetric theories with soft CP violation. The CP violation originates in the squark mass matrix, and, with phases of order unity, flavor symmetries can yield a correct prediction for the order of magnitude of ∈K.
AB - Recent improvements to the limit of ΔMBs imply that pure superweak theories, while not excluded, no longer provide a good fit to the data. A class of general superweak theories is introduced in which all flavor changing interactions are governed by an approximate flavor symmetry which gives a "3 mechanism". These theories are in good agreement with data, and predict low values for |Vtd|, |Vub/Vcb|, B(K+ → π+̄v), ∈′/∈ and CP asymmetries in B decays, and high values for ΔMBs and fB√BB. An important example of such a theory is provided by weak scale supersymmetric theories with soft CP violation. The CP violation originates in the squark mass matrix, and, with phases of order unity, flavor symmetries can yield a correct prediction for the order of magnitude of ∈K.
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U2 - 10.1016/S0370-2693(98)00148-8
DO - 10.1016/S0370-2693(98)00148-8
M3 - Article
AN - SCOPUS:0345869097
SN - 0370-2693
VL - 425
SP - 119
EP - 125
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -