Expected Precision of Higgs Boson Partial Widths within the Standard Model

Abstract

We discuss the sources of uncertainty in calculations of the partial widths of the Higgs boson within the Standard Model. The uncertainties come from two sources: the truncation of perturbation theory and the uncertainties in input parameters. We review the current status of perturbative calculations and note that these are already reaching the parts-per-mil level of accuracy for the major decay modes. The main sources of uncertainty will then come from the parametric dependences on alpha_s, m_b, and m_c. Knowledge of these parameters is systematically improvable through lattice gauge theory calculations. We estimate the precision that lattice QCD will achieve in the next decade and the corresponding precision of the Standard Model predictions for Higgs boson partial widths.

arXiv comment20 pages, 1 figure; v2: minor typo corrections

References in corpus (14)

• High-Precision c and b Masses, and QCD Coupling from Current-Current Correlators in Lattice and Continuum QCD
• Charm and Bottom Quark Masses: an Update
• Standard Model Higgs-Boson Branching Ratios with Uncertainties
• Higgs Working Group Report of the Snowmass 2013 Community Planning Study
• Reconstruction of heavy quark current correlators at O(α_s^3)
• On Third-Order Timelike Splitting Functions and Top-Mediated Higgs Decay into Hadrons
• CRunDec: a C++ package for running and decoupling of the strong coupling and quark masses
• Determination of alpha_s from the QCD static energy
• Low energy moments of heavy quark current correlators at four loops
• Higgs Decay to Gluons at NNLO
• Complete three-loop QCD corrections to the decay H -> γγ
• The Higgs boson inclusive decay channels $H\to b\bar{b}$ and $H\to gg$ up to four-loop level
• Study of the 125 GeV Standard Model Higgs Boson Partial Widths and Branching Fractions
• Low-mass Higgs decays to four leptons at one loop and beyond

Cited by in corpus (16)

• FLAG Review 2019
• Higgs Boson Studies at Future Particle Colliders
• Precision Higgs Physics at CEPC
• Higgs Boson Production and Decay at Hadron Colliders
• Lattice tests of beyond Standard Model dynamics
• Type-II 2HDM under the Precision Measurements at the $Z$-pole and a Higgs Factory
• CEPC Precision of Electroweak Oblique Parameters and Weakly Interacting Dark Matter: the Fermionic Case
• $h^0\to c\bar{c}$ as a test case for quark flavor violation in the MSSM
• TASI 2013 lectures on Higgs physics within and beyond the Standard Model
• Possible Futures of Electroweak Precision: ILC, FCC-ee, and CEPC
• Implication of Higgs Precision Measurement on New Physics
• Charmonium current-current correlators with Mobius domain-wall fermion
• Charm and bottom quark masses on the lattice
• Resolving charm and bottom quark masses in precision Higgs boson analyses
• Sterile Neutrino Dark Matter and Leptogenesis in Left-Right Symmetric Theories
• Quark mass determinations with the RI-SMOM scheme and HISQ action