Programme

P.78 -- Poster, VCTP-46

Date: Wednesday, 6 October 2021

Time: 08:30 - 10:00

Full next-to-leading order QED prediction for electron muon elastic scattering

Le Van Cuong (1,2), Le Duc Ninh (1), Le Duc Truyen (1)

(1) Institute For Interdisciplinary Research in Science and Education, ICISE, Quy Nhon, Vietnam; (2) University of Science, VNUHCM, Ho Chi Minh city, Vietnam

Recently, the MuonE experiment has been proposed as a new method to measure precisely the running of fine-structure electromagnetic coupling in the space-like region via the electron muon elastic scattering. This will help to resolve the 4.2 sigma discrepancy between the Standard Model prediction and the currently combined experimental measurement for the muon anomalous magnetic moment. For the MuonE experiment, the colliding energy is about 0.4 GeV, the effects of electromagnetic interaction are completely dominant. To achieve the required precision level of 10 ppm, next-to-next-to-leading order (NNLO) QED prediction is mandatory. In this work, we present our full next-to-leading order QED prediction for the the cross-section, utilizing the high-precision Monte-Carlo programs VEGAS+ and BASES for numerical calculation. This is an important step towards the full NNLO results.

Presenter: Lê Văn Cường