Update on technical aspects of B meson mixing at NNLO

2024/06/23 by Pascal Reeck, Reeck, Pascal
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Superconducting Materials and Applications

paper · pdf · doi:10.48550/arxiv.2406.16084

openalex publication_date 2024/06/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This report summarises important technical challenges and their solutions in the calculation of the next-to-next-to-leading order QCD corrections to the width difference ΔΓ_s in the B_s-B_s system. We focus on the treatment of spinor structures with products of up to 22 γ matrices by means of projection and tensor integrals. Moreover, we present an approach for the semi-numeric computation of master integrals.

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