Speaker
Description
In order to search for physics beyond the Standard Model at the precision frontier, it is sometimes essential to account for higher-order radiative corrections. We perform complete and detailed calculations of electroweak radiative corrections to parity-violating lepton scattering with a distinguishable target (electron-proton,muon-proton) up to Next-to-Next-to-Leading Order (NNLO) level using a covariant approach. Our NNLO level corrections include quadratic and reducible two-loop level scattering amplitudes. In the covariant approach, we apply a unitary cut to the Feynman diagrams and separate them into leptonic and hadronic currents. After squaring the matrix elements, we contract the leptonic-hadronic currents and obtain the differential scattering cross sections up to NNLO level.
Our numerical results are presented at energies relevant for a variety of existing and proposed experimental programs such as QWEAK, P2, MOLLER (background studies), MUSE, and EIC working at the precision frontier. Analysis of these results shows that such corrections at the NNLO level are quite significant to consider at the theoretical level with the increasing precision of future experimental programs at low-energy scales.
| Keyword-1 | Covariant approach |
|---|---|
| Keyword-2 | Radiative corrections |
| Keyword-3 | Leptonic tensor |
