2009/11/05 by K. Kołodziej, Karol Kolodziej, Kolodziej, Karol +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle Accelerators and Free-Electron Lasers #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.0911.1085
9 pages, 2 figures, presented at the XXXIII International Conference of Theoretical Physics, "Matter to the Deepest", Ustron, Poland, September 11-16, 2009
arxiv created 2009/11/05 · openalex publication_date 2009/11/05 · arxiv updated 2009/12/01 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
We discuss the reaction of associated production of a top quark pair and a Higgs boson at the future e+e- linear collider that can be used to determine the top-Higgs Yukawa coupling. Taking into account decays of the top quarks and the light Higgs boson leads to reactions with 8 fermions in the final state which, in the framework of the standard model, receive contributions typically from many thousands Feynman diagrams. An overwhelming majority of the diagrams comprises the off resonance background to the resonant signal of associated production and decay of the top quark pair and Higgs boson. We address the signal and background issue by comparing cross sections calculated with the signal diagrams only and with the complete sets of the diagrams.