Speaker
Zuzana Sinska
(Comenius University Bratislava)
Description
Axions as dark matter candidates may be produced via an infrared freeze-in mechanism from heavy meson decays in the early universe. In this scenario, higher-order corrections to the axion production rate contain infrared divergences. We demonstrate how holomorphic cutting rules, together with the Kinoshita-Lee-Nauenberg theorem, allow one to identify the minimal set of contributions required to achieve infrared-finite results. The procedure is systematic and can be straightforwardly generalized to other production processes.
Primary authors
Peter Matak
(Comenius University Bratislava)
Zuzana Sinska
(Comenius University Bratislava)
