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GAUGE AND HIGGS BOSONS

INSPIRE JSON (beta) PDGID:

${{\mathit H}}$

$J$ = $0$

was ${{\mathit H}^{0}}$

In the following ${{\mathit H}}$ refers to the signal that has been discovered in the Higgs searches. Whereas the observed signal is labeled as a spin 0 particle and is called a Higgs Boson, the detailed properties of ${{\mathit H}}$ and its role in the context of electroweak symmetry breaking need to be further clarified. These issues are addressed by the measurements listed below. Concerning mass limits and cross section limits that have been obtained in the searches for neutral and charged Higgs bosons, see the sections ``Searches for Neutral Higgs Bosons'' and ``Searches for Charged Higgs Bosons (${{\mathit H}^{\pm}}$ and ${{\mathit H}^{\pm\pm}}$)'', respectively.

${{\mathit H}}$ MASS

$125.25 \pm0.17$ GeV (S = 1.5)

${{\mathit H}}$ SPIN AND $\mathit CP$ PROPERTIES

${{\mathit H}}$ DECAY WIDTH

$3.2 {}^{+2.4}_{-1.7}$ MeV

${{\mathit H}}$ SIGNAL STRENGTHS IN DIFFERENT CHANNELS

Combined Final States

${{\mathit W}}{{\mathit W}^{*}}$ Final State

${{\mathit Z}}{{\mathit Z}^{*}}$ Final State

${{\mathit \gamma}}{{\mathit \gamma}}$ Final State

${{\mathit c}}{{\overline{\mathit c}}}$ Final State

$8 \pm22$ (S = 1.9)

${{\mathit b}}{{\overline{\mathit b}}}$ Final State

${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ Final State

${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ Final State

${{\mathit Z}}{{\mathit \gamma}}$ Final State

${{\mathit \gamma}^{*}}{{\mathit \gamma}}$ Final State

Higgs couplings

Fermion coupling (${{\mathit \kappa}_{{F}}}$)

Gauge boson coupling (${{\mathit \kappa}_{{V}}}$)

$1.035 \pm0.031$

${{\mathit W}}$ boson coupling (${{\mathit \kappa}_{{W}}}$)

${{\mathit Z}}$ boson coupling (${{\mathit \kappa}_{{Z}}}$)

top Yukawa coupling (${{\mathit \kappa}_{{t}}}$)

bottom Yukawa coupling (${{\mathit \kappa}_{{b}}}$)

charm Yukawa coupling (${{\mathit \kappa}_{{c}}}$)

tau Yukawa coupling (${{\mathit \kappa}_{{\tau}}}$)

muon Yukawa couping (${{\mathit \kappa}_{{\mu}}}$)

photon effective coupling (${{\mathit \kappa}_{{\gamma}}}$)

gluon effective coupling (${{\mathit \kappa}_{{gluon}}}$)

${{\mathit Z}}{{\mathit \gamma}}$ effective coupling (${{\mathit \kappa}}_{{{\mathit Z}}{{\mathit \gamma}}}$)

OTHER ${{\mathit H}}$ PRODUCTION PROPERTIES

${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$ Production

${{\mathit H}}{{\mathit H}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions

Higgs trilinear self coupling modifier ${{\mathit \kappa}_{{\lambda}}}$

Higgs-gauge boson quartic coupling modifier ${{\mathit \kappa}_{{2V}}}$

${{\mathit t}}{{\mathit H}}$ production

${{\mathit H}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV

$56.9 \pm3.4$ pb

${{\mathit H}}$ DECAY MODES

${{\mathit W}}{{\mathit W}^{*}}$

$(25.7\pm{2.5})\%$

${{\mathit Z}}{{\mathit Z}^{*}}$

$(2.80\pm{0.30})\%$

${{\mathit \gamma}}{{\mathit \gamma}}$

$(2.50\pm{0.20})\times 10^{-3}$

${{\mathit b}}{{\overline{\mathit b}}}$

${{\mathit e}^{+}}{{\mathit e}^{-}}$

$<3.6\times 10^{-4}$

${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$

$(2.6\pm{1.3})\times 10^{-4}$

${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$

$(6.0^{+0.8}_{-0.7})\%$

${{\mathit Z}}{{\mathit \gamma}}$

$(3.2\pm{1.5})\times 10^{-3}$

${{\mathit Z}}{{\mathit \rho}{(770)}}$

${{\mathit Z}}{{\mathit \phi}{(1020)}}$

$<3.6\times 10^{-3}$

${{\mathit Z}}{{\mathit \eta}_{{c}}}$

${{\mathit Z}}{{\mathit J / \psi}}$

${{\mathit J / \psi}}{{\mathit \gamma}}$

$<3.5\times 10^{-4}$

${{\mathit J / \psi}}{{\mathit J / \psi}}$

$<1.8\times 10^{-3}$

${{\mathit \psi}{(2S)}}{{\mathit \gamma}}$

$<2.0\times 10^{-3}$

${{\mathit \Upsilon}{(1S)}}{{\mathit \gamma}}$

$<4.9\times 10^{-4}$

${{\mathit \Upsilon}{(2S)}}{{\mathit \gamma}}$

$<5.9\times 10^{-4}$

${{\mathit \Upsilon}{(3S)}}{{\mathit \gamma}}$

$<5.7\times 10^{-4}$

${{\mathit \Upsilon}{(nS)}}{{\mathit \Upsilon}{(mS)}}$

$<1.4\times 10^{-3}$

${{\mathit \rho}{(770)}}{{\mathit \gamma}}$

$<8.8\times 10^{-4}$

${{\mathit \phi}{(1020)}}{{\mathit \gamma}}$

$<4.8\times 10^{-4}$

${{\mathit e}}{{\mathit \mu}}$

$<6.1\times 10^{-5}$

${{\mathit e}}{{\mathit \tau}}$

$<2.2\times 10^{-3}$

${{\mathit \mu}}{{\mathit \tau}}$

$<1.5\times 10^{-3}$

${\mathrm {invisible}}$

${{\mathit \gamma}}$ ${\mathrm {invisible}}$

FOOTNOTES

Except where otherwise noted, content of the 2023 Review of Particle Physics is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy), JPS and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2023. See LBNL disclaimers.