Titel
Muon-electron scattering at NNLO
Autor*in
A. Ferroglia
Physics Department, New York City College of Technology, The City University of New York
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Abstract
We present the first calculation of the complete set of NNLO QED corrections for muon-electron scattering. This includes leptonic, non-perturbative hadronic, and photonic contributions. All fermionic corrections as well as the photonic subset that only corrects the electron or the muon line are included with full mass dependence. The genuine four-point two-loop topologies are computed as an expansion in the small electron mass, taking into account both, logarithmically enhanced as well as constant mass effects using massification. A fast and stable implementation of the numerically delicate real-virtual contribution is achieved by combining OpenLoops with next-to-soft stabilisation. All matrix elements are implemented in the McMule framework, which allows for the fully-differential calculation of any infrared-safe observable. This calculation is to be viewed in the context of the MUonE experiment requiring a background prediction at the level of 10 ppm. Our results thus represent a major milestone towards this ambitious precision goal.
Stichwort
Higher-Order Perturbative CalculationsPrecision QEDAutomation
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
phaidra.univie.ac.at/o:2046280
Erschienen in
Titel
Journal of High Energy Physics
Band
2023
ISSN
1029-8479
Erscheinungsdatum
2023
Publication
Springer Science and Business Media LLC
Fördergeber
Europäische Union (alle Programme) — 714788
Europäische Union (alle Programme) — 754496
Europäische Union (alle Programme) — 725110
Erscheinungsdatum
2023
Zugänglichkeit
Rechte
Rechteangabe
© The Authors
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