A search for the Zγ decay mode of the Higgs boson in pp collisions at s=13 TeV with the ATLAS detector

Anatomy of Higgs boson decays into γγ and γZ within the electroweak chiral Lagrangian in the Rξ gauges

“…15 −0.14 [46] and μ CMS ¼ 1.18 þ0.17 −0.14 [47]. However, the H → γZ decay is not measured yet and we only have an upper limit on the production cross section times the branching ratio [48][49][50]. Also, the corresponding prospects to High Luminosity(HL)-LHC and High Energy(HE)-LHC are given in [51].…”

Top, Higgs, diboson and electroweak fit to the Standard Model effective field theory

“…We exhibit in tables 4 and 5 the contributions made at tree level by exchanges of each of these fields to the SMEFT coefficients. 16 The numbers shown in the tables should each be multiplied by the appropriate squared coupling factors and divided by the square of the mass scale M . 17 We show in figure 14 the results from our global fit for all of the one-parameter singlefield extensions of the SM.…”

“…Previous to the LHC, the most precise tests of the SM were those provided by measurements at LEP, notably at the Z peak [1] and in W + W − diboson production [2][3][4][5], and at the Tevatron, notably in measurements of the W [6] and top quark [7]. The LHC has added new classes of precise measurements, notably those of Higgs production and decays [8][9][10][11][12][13][14][15][16][17] and the production of the top quark in various modes at Run 1 and , the W mass [65], and also triple-gauge coupling measurements in diboson production [66][67][68][69][70] and Zjj production [71]. The SM is a tight theoretical framework that connects all these measurements.…”

Low-energy phenomenology of scalar leptoquarks at one-loop accuracy

“…��� ��� ��� ��� ��� ��� ��� ��� (ATLAS) [119] σ/σ SM (Zγ) < 3.9 @ 95% CL (CMS) [120] Table 5. Bosonic observables for the LQ potential couplings.…”

“…The only channels potentially sensitive to such deviations are those for which also the SM contribution arises at one-loop: Higgs couplings to photons and gluons. For the couplings to photons and gluons we use the latest combination of Higgs measurements done by ATLAS with 80 fb −1 of luminosity [118] while for the Zγ channel we use the ATLAS [119] and CMS [120] constraints: κ γ = 1.00 ± 0.06 , κ g = 1.030 ± 0.065 , ρ γ−g = −0.44 , σ/σ SM (Zγ) = κ 2 g κ 2 Zγ = 2.0 +1.0 −0.9 | ATLAS (< 3.9 @95%CL) CMS , (A.126) where κ i are coupling-modifiers in the so-called kappa-framework, defined for each channel by…”