Nuclear μ--e- conversion in strange quark sea

T. S. Kosmas, Sergey Kovalenko, Ivan Schmidt

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

We study nuclear μ--e- conversion in the general framework of effective Lagrangian approach without referring to any specific realization of the physics beyond the standard model (SM) responsible for lepton flavor violation (Łf). All the possible types of short range interactions (non-photonic mechanisms), i.e., (pseudo-)scalar, (axial-)vector and tensor, are included in our formalism. We show that the μ--e- conversion in the strange nucleon sea via the scalar interactions is comparable with that in the valence quarks. This provides an insight into the strange quark couplings beyond the SM. From the available experimental data on μ--e- conversion and expected sensitivities of planned experiments we derived upper bounds on the generic Łf-parameters of μ--e- conversion sensitive to the relevant u-, d- and s-quark couplings.

Original languageEnglish
Pages (from-to)203-208
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume511
Issue number2-4
DOIs
Publication statusPublished - 5 Jul 2001
Externally publishedYes

Keywords

  • Exotic μ-e conversion in nuclei
  • Lepton flavor violation
  • Muon capture
  • Physics beyond the standard model
  • Strange quark sea

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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