Speaker
Description
The emission of soft photons plays a fundamental role in our understanding of quantum field theories. However, the calculations for one-photon emission observables appear to be incompatible with the experimental measurements. Future upgrades to the ALICE detector at the LHC are proposed to measure soft photon emission, which is of great interest. Predictions for processes involving soft photons, up to next-to-leading power (NLP) in the photon's energy, can be obtained using the Low-Burnett-Kroll (LBK) theorem. In this talk, I propose a form of the LBK theorem which relies on evaluation of the non-radiative amplitude with on-shell, physical momenta. We use this form to numerically study the impact of NLP contributions to cross-sections for $pp$ and $e^-e^+$ processes involving soft photon emission.
