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Status of the MUonE experiment

by Pilato R. N.

Submission summary

Authors (as registered SciPost users): Riccardo Nunzio Pilato
Submission information
Preprint Link: scipost_202112_00014v1  (pdf)
Date accepted: 2024-12-18
Date submitted: 2021-12-09 10:15
Submitted by: Pilato, Riccardo Nunzio
Submitted to: SciPost Physics Proceedings
Proceedings issue: 16th International Workshop on Tau Lepton Physics (TAU2021)
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment
Approach: Experimental

Abstract

The latest measurement of the muon g-2, recently announced at Fermilab, exhibits a 4.2σ discrepancy from the Standard Model prediction. The hadronic contribution aμHLO represents the main source of uncertainty on the theoretical prediction. The MUonE experiment proposes a novel approach to determine aμHLO by measuring the effective electromagnetic coupling in the space-like region, via μ−e elastic scattering. The measurement is performed by scattering a 160 GeV muon beam, available at CERN, on atomic electrons of a low-Z target. A Test Run on a reduced detector is planned in 2022, to validate this proposal. The status of the experiment in view of the Test Run is presented.

Current status:
Accepted in target Journal

Editorial decision: For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)


Reports on this Submission

Report #1 by Swagato Banerjee (Referee 1) on 2024-11-28 (Invited Report)

Report

The MuonE experiment proposes an innovative method to make an independent measurement of the leading order hadronic contribution to the vacuum polarization needed for the precision prediction of the value of the anomalous magnetic moment of the muon. It is performed by scattering a 160 GeVmuon beam available at the CERN M2 beamline on the atomic electrons of a low-Z target. A Test Run on a reduced detector is planned in 2022, to validate this proposal. The status of the experiment in view of the Test Run is presented. . Preliminary studies show that a subsequent running time of 4 months will allow to achieve a ∼ 2% statistical accuracy.

Recommendation

Publish (surpasses expectations and criteria for this Journal; among top 10%)

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