Effective Lagrangian approach to nuclear mu-e conversion and the role of vector mesons

Details Effective Lagrangian approach to nuclear mu-e conversion and the role of vector mesons Effective Lagrangian approach to nuclear mu-e conversion and the role of vector mesons

2004-05-18

arxiv.org/abs/hep-ph/0405164v2

Phys.Rev. D70 (2004) 055008

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 3 figures, to be published in Phys Rev D

Scientific paper

10.1103/PhysRevD.70.055008

We study nuclear mu-e conversion in the general framework of an effective Lagrangian approach without referring to any specific realization of the physics beyond the standard model (SM) responsible for lepton flavor violation (LFV). We examine the impact of a specific hadronization prescription on the analysis of new physics in nuclear mu-e conversion and stress the importance of vector meson exchange between lepton and nucleon currents. A new issue of this mechanism is the presence of the strange quark vector current contribution induced by the phi meson. This allows us to extract new limits on the LFV lepton-quark effective couplings from the existing experimental data.

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