English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The rate for Higgs (H) bosons production in association with either one (tH)or two ($\mathrm{t\bar{t}}$H) top quarks is measured in final states containingmultiple electrons, muons, or tau leptons decaying to hadrons and a neutrino,using proton-proton collisions recorded at a center-of-mass energy of 13 TeV bythe CMS experiment. The analyzed data correspond to an integrated luminosity of137 fb$^{-1}$. The analysis is aimed at events that contain H $\to$ WW, H $\to$$\tau\tau$, or H $\to$ ZZ decays and each of the top quark(s) decays either tolepton+jets or all-jet channels. Sensitivity to signal is maximized byincluding ten signatures in the analysis, depending on the lepton multiplicity.The separation among the tH, the $\mathrm{t\bar{t}}$H, and the backgrounds isenhanced through machine-learning techniques and matrix-element methods. Themeasured production rates for the $\mathrm{t\bar{t}}$H and tH signalscorrespond to 0.92 $\pm$ 0.19 (stat) $^{+0.17}_{-0.13}$ (syst) and 5.7 $\pm$2.7 (stat) $\pm$ 3.0 (syst) of their respective standard model (SM)expectations. The corresponding observed (expected) significance amounts to 4.7(5.2) standard deviations for $\mathrm{t\bar{t}}$H, and to 1.4 (0.3) for tHproduction. Assuming that the Higgs boson coupling to the tau lepton is equalin strength to its expectation in the SM, the coupling $y_{\mathrm{t}}$ of theHiggs boson to the top quark divided by its SM expectation, $\kappa_\mathrm{t}$= $y_\mathrm{t} / y_\mathrm{t}^\mathrm{SM}$, is constrained to be within $-$0.9$\lt$ $\kappa_\mathrm{t}$ $\lt$ $-$0.7 or 0.7 $\lt$ $\kappa_\mathrm{t}$ $\lt$1.1, at 95% confidence level. This result is the most sensitive measurement ofthe $\mathrm{t\bar{t}}$H production rate to date.

european physical journal. c, particles and fields

Measurement of the Higgs boson production rate in association with top  quarks in final states with electrons, muons, and hadronically decaying tau  leptons at $\sqrt{s} =$ 13 TeV