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Abstract |
The observed muon anomalous magnetic moment deviates from the Standard Model
predictions at the level of 4 sigma. The discrepancy can be explained by the presence of New
Physics. The simplest explanation assumes the existence of new scalar or gauge bosons. As
an example of new scalars we consider scalar leptoquark contributions. In particular,
a mechanism that calls for mixing of two scalar leptoquarks of the same electric charge
through the interaction with the Higgs field, where the two leptoquarks separately couple to
the quark-muon pairs of opposite chirality structures. Another example is a gauge boson
which arrises in the U(1) extension of the SM. The parameter space of such a Z’ model is
strongly constrained by the discrepancy between experimental result and theoretical
prediction for the muon anomalous magnetic moment. |
