2016/12/01 by Massimiliano Grazzini, Agnieszka Ilnicka, Michael Spira +1
Computer Science · Physics and Astronomy · #Boson #Computational Physics and Python Applications #Hadron #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Logarithm #Parametrization (atmospheric modeling) #Particle physics theoretical and experimental studies #Spectrum (functional analysis) #Standard Model (mathematical formulation) #Yukawa potential #hep-ph
paper · pdf · doi:10.1007/jhep03(2017)115
arxiv created 2016/12/01 · openalex created_date 2016/12/08 · openalex publication_date 2017/03/01 · arxiv updated 2017/04/26 · openalex updated_date 2026/08/06
We consider the transverse-momentum distribution of a Higgs boson produced through gluon fusion in hadron collisions. At small transverse momenta, the large logarithmic terms are resummed up to next-to-leading-logarithmic (NLL) accuracy. The resummed computation is consistently matched to the next-to-leading-order (NLO) result valid at large transverse momenta. The ensuing Standard Model prediction is supplemented by possible new-physics effects parametrised through three dimension-six operators related to the modification of the top and bottom Yukawa couplings, and to the inclusion of a point-like Higgs-gluon coupling, respectively. We present resummed transverse-momentum spectra including the effect of these operators at NLL+NLO accuracy and study their impact on the shape of the distribution. We find that such modifications, while affecting the total rate within the current uncertainties, can lead to significant distortions of the spectrum. The proper parametrization of such effects becomes increasingly important for experimental analyses in Run II of the LHC.