Higgs interference effects in top-quark pair production in the 1HSM

• Published in: The journal of high energy physics Vol. 2024; no. 8; pp. 112 - 30
• Main Authors: Banfi, Andrea, Kauer, Nikolas, Lind, Alexander, Lindert, Jonas M., Wood, Ryan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 14.08.2024; Springer Nature B.V; Springer; SpringerOpen
• Subjects: Classical and Quantum Gravitation; Elementary Particles; Higgs bosons; Higgs Production; High Energy Physics - Experiment; High Energy Physics - Phenomenology; Higher-Order Perturbative Calculations; Large Hadron Collider; Multi-Higgs Models; Pair production; Physics; Physics and Astronomy; Quantum chromodynamics; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quarks; Regular Article - Theoretical Physics; Relativity Theory; Resonance; Standard model (particle physics); String Theory; Higgs Production; Multi-Higgs Models; Higher-Order Perturbative Calculations; numerical calculations; new physics; upgrade; quantum chromodynamics; mass; infrared; dip; CERN LHC Coll; pair production; benchmark; structure; heavy; 1; top; background; effect; Higgs particle; GeV; higher-order; interference; correction; stability

A bstract We present a next-to-leading-order (NLO) study of the process pp ( → { h 1 , h 2 }) → t t ¯ + X in the 1-Higgs-singlet extension of the Standard Model with an additional heavy Higgs boson h 2 that mixes with the light Higgs boson h 1 . This process is subject to large interference effects...