2004/05/31 by Amand Faessler, Th. Gutsche, Sergey Kovalenko +6 · 1 citation
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.70.055008
published as Phys.Rev. D70 (2004) 055008 · 19 pages, 3 figures, to be published in Phys Rev D
arxiv created 2004/07/26 · openalex publication_date 2004/09/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We study nuclear \ensuremathμ^\ensuremath-\ensuremath-e^\ensuremath- 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 (\mathrmL\ensuremath\llap\not f). We examine the impact of a specific hadronization prescription on the analysis of new physics in nuclear \ensuremathμ^\ensuremath-\ensuremath-e^\ensuremath- 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 \ensuremathφ meson. This allows us to extract new limits on the \mathrmL\ensuremath\llap\not f lepton-quark effective couplings from the existing experimental data.