5,179 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
Search for states in decays at the LHCb
We consider and as the vector tetraquark states of
and , respectively. By
connecting to , we predict that
the branching ratios of
and are and , which are accessible to the
experiments at the LHCb, respectively. The measurements of these
modes would be the first experimental evidences for the states in
baryonic decays.Comment: 7 pages, 1 figure
Radiative Baryonic Decays
We study the structure-dependent contributions to the radiative baryonic
decays of in the standard model. We show
that the decay branching ratios of are
, which are larger than the estimated values of
induced from inner bremsstrahlung effects of the corresponding two-body modes.
In particular, we find that is around , which is close to the pole model estimation but smaller than
the experimental measurement from BELLE.Comment: 11 pages, 2 figures, Revtex4, new fitting is include
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