Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 47-51 |
| Number of pages | 5 |
| Journal | Physics Letters B |
| Volume | 86 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Sep 10 1979 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
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Horizontal gauge symmetry as a natural CP-violation source at the two-generation level. / Davidson, Aharon; Koca, Mehmet; Wali, Kameshwar C.
In: Physics Letters B, Vol. 86, No. 1, 10.09.1979, p. 47-51.Research output: Contribution to journal › Article
}
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.
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.
UR - http://www.scopus.com/inward/record.url?scp=49249144161&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49249144161&partnerID=8YFLogxK
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 -