13,023 research outputs found
Anomaly, Charge Quantization and Family
We first review the three known chiral anomalies in four dimensions and then
use the anomaly free conditions to study the uniqueness of quark and lepton
representations and charge quantizations in the standard model. We also extend
our results to theory with an arbitrary number of color. Finally, we discuss
the family problem.Comment: 7 pages, LaTex file, Proceedings of the International Workshop on
Nonperturbative Methods and Lattice QCD, Guangzhou, Chin
Constraints on the Timeon Model
The timeon model recently proposed by Friedberg and Lee has a potential
problem of flavor changing neutral currents (FCNCs) if the mass of the timeon
is small. In order to avoid, we introduce a small dimensionless parameter to
suppress FCNCs. Even in this case, we find that the timeon mass must be larger
than 151 GeV to satisfy all the constraints from processes involving FCNCs in
the quark sectors. We also extend the timeon model to the lepton sector and
examine the leptonic processes.Comment: 10 pages, 1 figure, published version in PR
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