“…On the other hand the $L_P$ variable suggested by CMS collaboration is a quite proper variable to study LHC sensitivity to $g_V,g_A$ couplings of $W$-boson to fermions. We note that the experimental sensitivity to W-boson polarization which is much higher than that to ($g_V,g_A$) parameter space can be turned around and used to pin down new physics at the LHC.…”
Enlace del recurso
Enlace del recurso

“…Whether the recently-discovered boson with m=125 GeV couples to fermions as expected for the Standard Model Higgs boson is a question of crucial importance. …”
Enlace del recurso

“…Evidence for direct decay into fermions is found at the $3.7\sigma$ level from the combination of the $H\to bb$ and$H\to \tau\tau$ channels with a signal strength of $\mu_{bb,\tau\tau} = 1.09 \pm 0.24\,\text{(stat)}^{+0.27}_{-0.21}\,\text{(sys)}$. …”
Enlace del recurso

“…Results of combined fits probing Higgs boson couplings to fermions and bosons, as well as anomalous contributions of loop-induced production and decay modes, are presented. …”
Enlace del recurso
Enlace del recurso

“…Evidence for direct decay into fermions is found at the $3.7\sigma$ level from the combination of the $H\to bb$ and$H\to \tau\tau$ channels with a signal strength of $\mu_{bb,\tau\tau} = 1.09 \pm 0.24\,\text{(stat.)}^{+0.27}_{-0.21}\,\text{(syst.)}$. …”
Enlace del recurso

“…This excess provides evidence for the direct coupling of the recently discovered Higgs boson with mass $m_H$~=~125~\GeV\ to fermions. The measured signal strength, normalised to the Standard Model expectation, of $\mu = 1.42 \ ^{+0.44}_{-0.38}$ is consistent with the predicted Yukawa coupling strength in the Standard Model.…”
Enlace del recurso

“…With an observed (expected) significance of 4.1$\sigma$ (3.2$\sigma$), this is evidence for the coupling of this Higgs boson to fermions. The multi-variate analysis of a dataset corresponding to 20.3 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}=8$ TeV is presented together with a separate cut-based analysis of the same dataset searching for $h/H/A{\rightarrow}\tau^+\tau^-$ decays in the context of the Minimal Supersymmetric Standard Model (MSSM). …”
Enlace del recurso

“…These tools include the formalism of second quantization, field theoretical perturbation theory, functional integral methods, bosonic and fermionic, and estimation and summation techniques for Feynman diagrams. …”
Enlace del recurso

“…The direct detection rate is instead set via fermionic Higgs portal interactions, which are likewise constrained by naturalness considerations but parametrically weaker than those leading to dark matter annihilation. …”
Enlace del recurso
Enlace del recurso

“…Given that no clue has been found on the scale of new physics, signature-based search covering a wide range of final states and topologies is very important nowadays. Searches for fermionic top/bottom quark partners, referred to as vector-like quarks, are performed in various final states with leptons, jets, and missing transverse momentum ($p_T$). …”
Enlace del recurso

“…In particular, new particles with Higgs-like enhanced couplings to the third generation fermions may induce large deviations from the well-understood standard model expectations. …”
Enlace del recurso

“…Tau triggers are used in a variety of highly anticipated ATLAS physics analyses, including the measurement of the Higgs boson coupling to fermions and searches for Higgs boson partners or heavy resonances decaying into pairs of tau leptons. …”
Enlace del recurso

“…Finally, we briefly comment on prospects for channels involving other Standard Model fermions as well as more exotic decay possibilities of the putative resonance.…”
Enlace del recurso
Enlace del recurso

“…This monograph offers an overview of rigorous results on fermionic topological insulators from the complex classes, namely, those without symmetries or with just a chiral symmetry. …”
Enlace del recurso
Enlace del recurso

“…For a coupling strength of 0.1, the resonant production mode is excluded for scalar resonant particle masses up to 1610~GeV and fermionic invisible particle masses ranging from 10 to 200 GeV. …”
Enlace del recurso

“…This document presents the combination of the ATLAS and CMS measurements of the Higgs boson production and decay rates and of the Higgs boson coupling with vector bosons and fermions. The analysis uses the LHC proton--proton collision data recorded by the ATLAS and CMS experiments in 2011 and 2012, corresponding to integrated luminosities per experiment of approximately 5~fb$^{-1}$ at $\sqrt{s}=7$~TeV and 20~fb$^{-1}$ at $\sqrt{s} = 8$~TeV. …”
Enlace del recurso
Enlace del recurso

“…This note describes a search for neutral, long-lived particles produced from heavy-scalar decays in proton-proton collisions, at a center-of-mass energy of $13~\mathrm{TeV}$, which have a displaced decay to fermions. This analysis uses $3.2~\mathrm{fb^{-1}}$ of data recorded with the ATLAS detector during 2015. …”
Enlace del recurso

“…Tau leptons are used in a range of important ATLAS physics analyses, including the measurement of the SM Higgs boson coupling to fermions, searches for Higgs boson partners, and heavy resonances that decay into pairs of tau leptons. …”
Enlace del recurso
Enlace del recurso

“…The results are used to exclude heavy fermions of the type-III seesaw model with masses below $850~\mathrm{GeV}$ for the lepton-flavor democratic scenario.…”
Enlace del recurso

“…This decay is of particular interest to probe the Yukawa coupling of the Higgs boson to fermions. CMS data of the year 2012 are used, corresponding to an integrated luminosity of $19.7\,fb^{−1}$ of proton-proton collisions collected at a center-of-mass energy of $8\,TeV$. …”
Enlace del recurso