Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Poster Session
Neutral pion production in muon-electron scattering at MUonE
C.L. Del Pio* and E. Budassi
Full text: pdf
Pre-published on: November 10, 2022
Published on:
Abstract
The value of the anomalous magnetic moment of the muon, $a_\mu = (g-2)_\mu / 2$, is a fundamental quantity in particle physics. Its most precise experimental measurement
yields a deviation of 4.2$\sigma$ from the theoretical prediction within the Standard Model. In this context, the recently proposed MUonE experiment at CERN aims at
providing a novel and independent determination of the main source of theoretical uncertainty on the muon anomaly, namely the leading order hadronic
contribution $a_\mu^{\rm HLO}$, through the study
of elastic muon-electron scattering at small momentum
transfer. The anticipated accuracy of the order of 10 ppm demands for
high-precision calculations of the relevant radiative corrections to $\mu e$ scattering, as well as for robust quantitative estimates of all possible background processes. The contribution due to the emission of a neutral pion through the process $\mu e \to \mu e \pi^0$ is here studied as a source of reducible background for the measurement of the QED running coupling constant
at MUonE, and as a background for possible New Physics searches at MUonE involving $2 \to 3$ processes, in phase space regions complementary to the ones characteristic of the elastic $\mu e$ scattering. Its numerical impact is discussed by means of the Monte Carlo event generator MESMER.
DOI: https://doi.org/10.22323/1.414.1035
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access