2015/09/14 by Alexey A. Petrov, Petrov, Alexey A., Stefan Pokorski +5
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1509.04173
10 pages, 2 figures. To be published in the proceedings of CHARM-2015, Detroit, MI, 18-22 May 2015
arxiv created 2015/09/14 · openalex publication_date 2015/09/14 · arxiv updated 2015/09/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Masses of the charm and bottom quarks are important inputs to precision calculations of Higgs boson observables, such as its partial widths and branching fractions. They constitute a major source of theory uncertainties that needs to be better understood and reduced in light of future high-precision measurements. Conventionally, Higgs boson observables are calculated in terms of mc and mb, whose values are obtained by averaging over many extractions from low-energy data. This approach may ultimately be unsatisfactory, since mc and mb as single numbers hide various sources of uncertainties involved in their extractions some of which call for more careful estimations, and also hide correlations with additional inputs such as αs. Aiming at a more detailed understanding of the uncertainties from mc and mb in precision Higgs boson analyses, we present a calculation of Higgs boson observables in terms of low-energy observables, which reveals concrete sources of uncertainties that challenge sub-percent-level calculations of Higgs boson partial widths.