Bloch-Nordsieck restoration in llbar -> qqbar

2021/10/14 by Franziska Reiner, Axel Maas · 1 voice
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.22323/1.398.0449

published as PoS EPS-HEP2021 (2022) 449 · 4 pages, submitted to the proceedings of EPS-HEP 2021

arxiv created 2021/10/14 · arxiv published 2021/10/14 · arxiv updated 2022/03/22

Abstract

Usually, the Bloch-Nordsieck theorem is expected to be violated in weak interactions, as the corresponding asymptotic states are not weak singlets. However, a manifest gauge-invariant approach replaces the asymptotic states with composite states, and thereby restores the Bloch- Nordsieck theorem. The Froehlich-Morchio-Strocchi mechanism ensures that this is in agreement with existing phenomenology. We outline the necessary steps of this construction.

Discussions

• THE #EPSHEP21 proceedings of my master student Franziska Reiner are now available at https://arxiv.org/abs/2110.07312 - we find that subtle SM effects, which are usually not accounted for, can have su [bsky, 0 points, 0 comments]

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