https://doi.org/10.1140/epja/s10050-023-01215-0
Regular Article - Experimental Physics
Instrumental uncertainties in radiative corrections for the MUSE experiment
1
Department of Physics and Astronomy, University of South Carolina, 29208, Columbia, SC, USA
2
Department of Physics and Astronomy, Stony Brook University, 11794, Stony Brook, NY, USA
3
RIKEN BNL Research Center, Brookhaven National Laboratory, 11973, Upton, NY, USA
4
Department of Physics, The George Washington University, 20052, Washington, DC, USA
5
Department of Physics, Hampton University, 23668, Hampton, VA, USA
6
Racah Institute of Physics, The Hebrew University of Jerusalem, 91904, Jerusalem, Israel
7
Paul Scherrer Institute, 5232, Villigen, Switzerland
8
Department of Physics, University of Virginia, 22904, Charlottesville, VA, USA
9
Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 08854, Piscataway, NJ, USA
10
Randall Laboratory of Physics, University of Michigan, 48109, Ann Arbor, MI, USA
11
Physics Division, Argonne National Laboratory, 60439, Lemont, IL, USA
12
Department of Physics, Temple University, 19122, Philadelphia, PA, USA
13
Laboratory for Nuclear Science, Massachusetts Institute of Technology, 02139, Cambridge, MA, USA
Received:
13
July
2023
Accepted:
8
December
2023
Published online:
10
January
2024
The MUSE experiment at the Paul Scherrer Institute is measuring elastic lepton-proton scattering cross sections in a four-momentum transfer range from Q2 of approximately 0.002–0.08 GeV2 using positively and negatively charged electrons and muons. The extraction of the Born cross sections from the experimental data requires radiative corrections. Estimates of the instrumental uncertainties in those corrections have been made using the ESEPP event generator. The results depend in particular on the minimum lepton momentum that contributes to the experimental cross section and the fraction of events with hard initial-state radiation that is detected in the MUSE calorimeter and is excluded from the data. These results show that the angular-dependent instrumental uncertainties in radiative corrections to the electron cross section are less than 0.4% and are negligible for the muon cross section.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
