Lepton-flavor violating axions at MEG II

Yongsoo Jho (Department of Physics and IPAP, Yonsei University, Seoul, 03722, Republic of Korea; Theoretical Physics Department, CERN, Geneva, Switzerland) ; Simon Knapen (Berkeley Center for Theoretical Physics, Department of Physics, University of California, Berkeley, CA, 94720, USA; Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA) ; Diego Redigolo (Theoretical Physics Department, CERN, Geneva, Switzerland; INFN, Sezione di Firenze, Via G. Sansone 1, Sesto Fiorentino, 50019, Italy)

We study the sensitivity of the existing MEG data to lepton flavor violating axion-like particles produced through μ + → e + aγ and estimate the discovery potential for the upcoming MEG II experiment in this channel. The MEG II signal efficiency can be improved significantly if a new trigger can be implemented in a dedicated run with a reduced beam intensity. This search would establish the world leading measurement in this channel with only 1 month of data taking.

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      "surname": "Knapen", 
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      "surname": "Redigolo", 
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      "value": "We study the sensitivity of the existing MEG data to lepton flavor violating axion-like particles produced through \u03bc + \u2192 e + a\u03b3 and estimate the discovery potential for the upcoming MEG II experiment in this channel. The MEG II signal efficiency can be improved significantly if a new trigger can be implemented in a dedicated run with a reduced beam intensity. This search would establish the world leading measurement in this channel with only 1 month of data taking."
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Published on:
05 October 2022
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2022 (2022)
Issue 10
Pages 1-23
DOI:
https://doi.org/10.1007/JHEP10(2022)029
arXiv:
2203.11222
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: