Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 29: Flavour Physics II
T 29.7: Talk
Tuesday, March 17, 2026, 17:45–18:00, KH 01.011
Update of the SM prediction for B → Xs γ — •Tobias Huber1, Mikolaj Misiak2, Matthias Steinhauser3, Mateusz Czaja3, Michal Czakon4, Kay Schönwald5, Abdur Rehman6, and Marco Niggetiedt7 — 1Theoretische Physik 1, Center for particle physics Siegen, University of Siegen, Germany — 2Institute of Theoretical Physics, University of Warsaw, Poland. — 3Institute for theoretical particle physics, KIT, Karlsruhe, Germany — 4Institut f. Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, Germany — 5CERN theory group, CERN, Geneva, Switzerland — 6Department of Physics, University of Alberta, Edmonton, Canada — 7Max Planck Institute for Physics, Munich, Germany
We will provide an update of the SM theory prediction for B(B → Xs γ), including, in particular, NNLO Q1,2 − Q7 interferences with exact charm-quark mass dependence. Also phenomenologial implications such as constraints on the charged-Higgs mass in two-Higgs-doublet models will be given.
Keywords: Quark-flavour physics; B-physics; Rare decays; Higher-order calculations