Work

Challenges in the extraction of physics beyond the Standard Model from electron scattering

Year: 2024

Type: article

Abstract: Precise measurements of electron and positron scattering, including parity violation, offer great promise in the search for physics beyond the Standard Model (SM). In this context it is crucial to understand the corrections which might arise from charge symmetry violation, as well as the less well known strange and charm quark distributions. Our analysis, using state of the art parton distributions, suggests that these contributions lead to corrections in the extraction of the weak couplings g A V e q and g V A e q of the order (1−2)%, while they are as large as 4% for g A A e q , at a typical scale of Q 2 = 10 GeV2. These results underline the importance of carrying out high precision measurements, which will not only provide information on physics beyond the SM but also reduce the current uncertainties on our knowledge of the strange and charm quark distributions in the proton.

Source: Journal of Physics G Nuclear and Particle Physics

DOI: 10.1088/1361-6471/ad91d1

Authors: Xuan-Gong Wang, A W Thomas

Institutions: ARC Centre of Excellence for Dark Matter Particle Physics, The University of Adelaide

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,165

Funder: Australian Research Council