PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T07: Top and Electroweak Physics
The Bloch Nordsieck (BN) restoration for ll ̅ → qq ̅
F. Reiner* and A. Maas
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Pre-published on: January 12, 2022
Published on:
Abstract
Usually, the Bloch-Nordsieck theorem is expected to be violated in weak interactions, as thecorresponding asymptotic states are not weak singlets. However, a manifest gauge-invariantapproach replaces the asymptotic states with composite states, and thereby restores the Bloch-Nordsieck theorem. The Fröhlich-Morchio-Strocchi mechanism ensures that this is in agreementwith existing phenomenology. We outline the necessary steps of this construction.
DOI: https://doi.org/10.22323/1.398.0449
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