• Open Access

Momentum distribution of the electron pair from the charged lepton flavor violating process μeee in muonic atoms with a polarized muon

Yoshitaka Kuno, Joe Sato, Toru Sato, Yuichi Uesaka, and Masato Yamanaka
Phys. Rev. D 100, 075012 – Published 11 October 2019

Abstract

The μeee process in a muonic atom is one of the promising probes to study the charged lepton flavor violation (CLFV). We have investigated the angular distribution of electrons from the polarized muon of the atomic bound state. The parity violating asymmetric distribution of electrons is analyzed by using lepton wave functions under the Coulomb interaction of a finite nuclear charge distribution. It is found that the asymmetry parameters of electrons are very sensitive to the chiral structure of the CLFV interaction and the contact/photonic interaction. Therefore, together with the atomic number dependence of the decay rate studied in our previous work, the angular distribution of electrons from a polarized muon should be a very useful tool to constrain the model beyond the standard model.

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  • Received 30 August 2019

DOI:https://doi.org/10.1103/PhysRevD.100.075012

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsAtomic, Molecular & Optical

Authors & Affiliations

Yoshitaka Kuno1, Joe Sato2, Toru Sato3,4, Yuichi Uesaka2, and Masato Yamanaka5,6

  • 1Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
  • 2Physics Department, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama, Saitama 338-8570, Japan
  • 3Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan
  • 4J-PARC Branch, KEK Theory Center, Institute of Particle and Nuclear Studies, KEK, Tokai, Ibaraki 319-1106, Japan
  • 5Department of Mathematics and Physics, Osaka City University, Osaka 558-8585, Japan
  • 6Nambu Yoichiro Institute of Theoretical and Experimental Physics (NITEP), Osaka City University, Osaka 558-8585, Japan

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Issue

Vol. 100, Iss. 7 — 1 October 2019

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