HIGGS 2024

Session

Common session: precision & BSM 1 - sal IX

6 Nov 2024, 13:30

Uppsala University Main Building

Conveners

Common session: precision & BSM 1 - sal IX

• Eleni Vryonidou (The University of Manchester (GB))
• Stefano Manzoni (CERN)
• Daniel Winterbottom (Imperial College (GB))
• Susan J Dittmer (Northwestern University (US))
• Rafael Coelho Lopes De Sa (University of Massachusetts (US))
• Stephen Philip Jones (University of Durham (GB))

82. Effect of anomalous HHH and ZZHH couplings on the decay width of H --> 4l.

BISWAJIT DAS (The Institute of Mathematical Sciences, Chennai)

06/11/2024, 13:30

Precision Higgs measurements and calculations

Despite the discovery of the Higgs boson, the Higgs sector of the standard model is still not fully established. In particular, the self-couplings of the Higgs boson, and its couplings with gauge bosons, are still to be fully determined. We consider electroweak corrections to the process $H\to 4l$. The corrections depend on the HHH and ZZHH couplings. We investigate this dependence in...

97. Anomalous couplings in Higgs plus jet production

Benjamin Campillo Aveleira

06/11/2024, 13:50

Precision Higgs measurements and calculations

We present NLO QCD results for Higgs boson production in association with one jet, including anomalous Higgs-top and Higgs-gluon couplings and with full top quark mass dependence. We will compare the full theory with varied anomalous couplings to the Standard Model, based on our implementation into POWHEG-BOX-V2. Of special interest will be the $p_{T,H}$ distribution, since the high-pT tail...

94. Higgs decay to llZ at one loop in the SMEFT

Matthew Forslund

06/11/2024, 14:10

Precision Higgs measurements and calculations

The Higgs decay into four leptons remains one of the best measured decay modes of the Higgs at the LHC, making precision calculations necessary for accurate predictions and constraints. We present the first calculation of the decay width for H to llZ at full one-loop in the Standard Model Effective Field Theory. At one-loop, a variety of new coefficients appear that modify the total rate and...

105. Impact of renormalisation group equation on Higgs production in the SMEFT

Giuseppe Ventura

06/11/2024, 14:30

Precision Higgs measurements and calculations

We study the impact of RGE running and mixing of SMEFT operators on differential observables in $Hj$, $t\overline{t}H$ and $HH$ production at the LHC. We focus on a subset of operators closed under the QCD-induced anomalous dimension matrix and explore the impact of employing a fixed or dynamical scale on the EFT predictions for the Higgs transverse momentum and Higgs pair invariant mass spectra....