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  • Letter
  • Open Access

Probing light mediators at the MUonE experiment

Giovanni Grilli di Cortona* and Enrico Nardi†

  • Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, C.P. 13, 00044 Frascati, Italy

  • *grillidc@lnf.infn.it
  • †enrico.nardi@lnf.infn.it
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Phys. Rev. D 105, L111701 – Published 3 June, 2022

DOI: https://doi.org/10.1103/PhysRevD.105.L111701

Abstract

The MUonE experiment will provide a precise measurement of the hadronic vacuum polarization contribution to (g−2)μ via μ−e−→μ−e−. Exploiting the process μ−N→μ−NX, with N the target nucleus and X a new physics light mediator, MUonE can be sensitive to new regions of parameter space for sub-GeV dark photons. In particular, thanks to its muon beam, MUonE will explore uncharted parameter space regions for the Lμ−Lτ model. Finally, MUonE can probe axionlike particles for different assumptions of their couplings to electrons, muons, and photons.

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Phys. Rev. D 105, L111701– Published 3 June, 2022
  • Received 13 April 2022
  • Accepted 21 May 2022
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