TY - JOUR
T1 - Horizontal gauge symmetry as a natural CP-violation source at the two-generation level
AU - Davidson, Aharon
AU - Koca, Mehmet
AU - Wali, Kameshwar C.
N1 - Funding Information:
In this note we propose an alternative for CP violation within the context of the so-called horizontal * Work supported, in part, by the U.S. Department of Energy, under contract #EY-76-S-02-3533. I On leave of absence from Cukurova University, Adana, Turkey.
PY - 1979/9/10
Y1 - 1979/9/10
N2 - We show that the classification of the WS-GIM generations by horizontal gauge symmetries can give rise to CP violation already at the two-generation level. The smallness of the CP-violation phase associated with the K0-K0 system is correlated with the smallness of the physical Cabibbo-like angle which emerges in the up-quark sector. We argue that strict lepton number conservation severely restricts the horizontal symmetries and requires a non-trivial vertical structure. The effective lowest-order four-fermion CP-violating operator is calculated in a recently proposed (SU(2) × U(1)) × U′ (1) model.
AB - We show that the classification of the WS-GIM generations by horizontal gauge symmetries can give rise to CP violation already at the two-generation level. The smallness of the CP-violation phase associated with the K0-K0 system is correlated with the smallness of the physical Cabibbo-like angle which emerges in the up-quark sector. We argue that strict lepton number conservation severely restricts the horizontal symmetries and requires a non-trivial vertical structure. The effective lowest-order four-fermion CP-violating operator is calculated in a recently proposed (SU(2) × U(1)) × U′ (1) model.
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U2 - 10.1016/0370-2693(79)90618-X
DO - 10.1016/0370-2693(79)90618-X
M3 - Article
AN - SCOPUS:49249144161
VL - 86
SP - 47
EP - 51
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 1
ER -