Gauge Model of Quark–Lepton Nonuniversality
2003 ◽
Vol 18
(20)
◽
pp. 1367-1375
◽
Keyword(s):
Z Decays
◽
We consider a gauge model where quark–lepton universality is an accidental symmetry which is only approximate, in analogy to the well-accepted notion that strong isospin is accidental and approximate. This is a natural framework for explaining possible small deviations of quark–lepton universality which is applicable to the recently reported apparent nonunitarity of the quark mixing matrix. As a result, small departures from quark–lepton universality are expected in Z decays as well as in the recent neutrino data of the NuTeV collaboration and in future low-energy experiments. New physics is predicted at the TeV scale.
Keyword(s):
Keyword(s):
2009 ◽
Vol 88
(5)
◽
pp. 51001
◽
2019 ◽
Vol 79
(12)
◽
Keyword(s):
Keyword(s):
1990 ◽
Vol 05
(10)
◽
pp. 743-754
◽
Keyword(s):