Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 47: Higgs Physics V
T 47.1: Talk
Wednesday, March 18, 2026, 16:15–16:30, KH 00.014
Top-Yukawa- and Light-Quark-Induced Electroweak Corrections in Higgs Pair Production — Arunima Bhattacharya1, Francisco Campanario1, •Sauro Carlotti2, Jamie Chang3, Javier Mazzitelli3, Milada Margarete Mühlleitner2, Jonathan Ronca4, and Michael Spira3 — 1University of Valencia-CSIC, Spain — 2Karlsruher Institut für Technologie, Germany — 3Paul Scherrer Institut, Switzerland — 4University of Padua, Italy
Since the discovery of the Higgs boson in 2012, the measurements of the Higgs self coupling remains a major challenge for current and future experiments in particle physics. Current projections for the trilinear coupling measurements at HL-LHC, and next generation of colliders, require the experimental precision to be matched by theory predictions. This necessitates besides the QCD corrections, which are found to be large, also the electroweak corrections (EW). The NLO corrections involve evaluation of two-loop Feynman diagrams. The EW corrections are a true challenge for the numerical solution of the two-loop integrals due to the presence of many different mass scales, such as the gauge boson, bottom, top quark, and Higgs boson masses. Additional challenges arise from numerical instabilities near virtual thresholds, which require a careful treatment. In my talk, I will present results for the EW corrections induced by the top Yukawa coupling, including contributions from light-quark loops, without using any reduction techniques to master integrals. All calculations are performed with fully symbolic masses while maintaining a manageable code size, enabling future studies of parametric and mass-scheme/scale uncertainties.
Keywords: Higgs physics; Precision calculations; Two loop corrections