Phenomenological constraints on minimally coupled exotic lepton triplets

Details Phenomenological constraints on minimally coupled exotic lepton triplets Phenomenological constraints on minimally coupled exotic lepton triplets

2010-11-22

arxiv.org/abs/1011.4730v2

Phys.Rev.D83:055010,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 1 figure, 2 tables (REVTeX4.1); v2: refs added, to appear in PRD

Scientific paper

10.1103/PhysRevD.83.055010

By introducing a set of new triplet leptons (with nonzero hypercharge) that can Yukawa couple to their Standard Model counterparts, new sources of tree-level flavor changing currents are induced via mixing. In this work, we study some of the consequences of such new contributions on processes such as the leptonic decays of gauge bosons, $\ell \rightarrow 3\ell'$ and $\ell \rightarrow \ell' \gamma$ which violate lepton flavor, and mu-e conversion in atomic nuclei. Constraints are then placed on the parameters associated with the exotic triplets by invoking the current low-energy experimental data. Moreover, the new physics contribution to the lepton anomalous magnetic moments is calculated.

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