10-12 March 2020
Academpark
Asia/Novosibirsk timezone

Electron-positron annihilation to photons at NLO revisited

11 Mar 2020, 15:20
20m
Room N2 (Academpark)

Room N2

Academpark

Nikolaev str. 12, Novosibirsk, Russia
Oral presentation Теоретическая физика Теоретическая физика

Speaker

Dr Roman Lee (The Budker Institute of Nuclear Physics, Novosibirsk)

Description

We apply modern multiloop methods to the calculation of the total cross section of the process $e^+e^-\to \gamma\gamma(\gamma)$ with accuracy $O(\alpha^3)$. We obtain the result for arbitrary energies and analyze the high-energy asymptotics. We discuss the origin of the disagreement of our result with some results available in the literature. In particular, we find that some terms contributing to the leading high-energy asymptotics were overlooked in the well-known paper by Berends and Kleiss.

Primary author

Dr Roman Lee (The Budker Institute of Nuclear Physics, Novosibirsk)

Presentation Materials