Speaker
Description
Next-to-next-to-leading order (NNLO) QED corrections are an important ingredient for different low-energy experiments such as MUonE, MUSE, and P2. In this talk, we will discuss the computation of such higher-order corrections to different observables relevant to the above experiments. To compute these corrections it is important to keep the masses of leptons finite, which regularises the collinear singularities. Soft singularities are treated with dimensional regularisation and using FKS$^l$ subtraction. We will discuss the implementation of various QED processes at NNLO in the McMule framework. We discuss the phenomenological results for muon-electron scattering, including the dominant NNLO corrections. In addition, we also discuss a stable implementation of the numerically delicate real-virtual matrix elements for the Bhabha scattering as well as Møller scattering.
| Session | Quark and Lepton Flavour Physics |
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