High energy spectrum of internal positrons from radiative muon capture on nuclei

Ryan Plestid, Richard J. Hill

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The Mu2e and COMET collaborations will search for nucleus-catalyzed muon conversion to positrons (μ-→e+) as a signal of lepton number violation. A key background for this search is radiative muon capture where either (1) a real photon converts to an e+e- pair "externally"in surrounding material, or (2) a virtual photon mediates the production of an e+e- pair "internally."If the e+ has an energy approaching the signal region then it can serve as an irreducible background. In this work we describe how the near end point internal positron spectrum can be related to the real photon spectrum from the same nucleus, which encodes all nontrivial nuclear physics.

Original languageEnglish
Article number033002
JournalPhysical Review D
Issue number3
StatePublished - Feb 15 2021

Bibliographical note

Publisher Copyright:
© 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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