Higgs and Effective Field Theory - HEFT 2026

Session

Top, Higgs and EW

10 Jun 2026, 11:30

Jardí Botànic, Valencia

75. To HEFT or to SMEFT? Multi-Higgs production as a probe of electroweak symmetry breaking

Ramona Grober (Università di Padova and INFN, Sezione di Padova)

10/06/2026, 11:30

36. Could electron-top interactions spoil the measurement of the Higgs trilinear?

Lucine Tabatt

10/06/2026, 12:00

The measurement of the Higgs self-coupling is considered the next milestone in the study of the Higgs boson properties.
At future $e^+e^-$ facilities below the double Higgs production threshold, this is extracted from the $Zh$ production cross-section, which is sensitive to the trilinear coupling at the one-loop level.
At the same perturbative order, potential effects beyond the Standard...

28. Differential observables for the Higgs-strahlung process to all orders in EFT

Mr Sourav Bera (Tata Institute of Fundamental Research, Mumbai)

10/06/2026, 12:20

We develop methods to obtain the fully differential cross-section for the $f \bar{f} \to Z(\ell\ell)\,h$ process to any desired order in effective field theory (EFT). To achieve this, we first derive a mapping between the partial wave expansion and the EFT expansion to all orders. We find that at lower orders, EFT predicts correlations between the different partial wave coefficients....

8. Partial-wave unitarity bounds on CP-odd dimension-eight anomalous quartic gauge couplings in SMEFT

Samuel Rosende Herrero (IFT UAM-CSIC)

10/06/2026, 12:40

We derive partial-wave unitarity constraints on CP-odd operators in the Standard Model Effective Field Theory (SMEFT) that generate genuine anomalous quartic gauge couplings. We consider the complete set of twelve independent dimension-eight CP-odd operators, comprising six mixed field-strength structures and six tensor operators built from dual field strengths.
We analyze two-to-two...

76. NLO corrections in the SMEFT

Clara Lavinia Del Pio (Brookhaven National Lab)

11/06/2026, 17:30

47. Sensitivity to top-quark couplings in diboson production at lepton colliders

Eugenia Celada

11/06/2026, 18:00

I will present results for the next-to-leading order electroweak corrections to $e^+e^-\to W^+W^-$ from dimension-six two-fermion top-quark operators in the SMEFT.
I will discuss the analytical computation and show results for future electron–positron colliders, focusing on the proposed LEP3 and FCC-ee that will operate at centre of mass energies below the $t\bar t$ production threshold.
I...

16. A Comprehensive Study of Top-Quark Effective Interactions in the SMEFT Framework

Mr Subhajit Kala (Indian Institute of Technology Guwahati)

11/06/2026, 18:20

We perform a global analysis of top-quark flavour-changing neutral current (FCNC) interactions and the dominant charged-current $(Wtb)$ coupling within an effective field theory framework, incorporating constraints from low-energy flavour observables, electroweak precision data, Higgs and gauge-boson measurements, and electric dipole moment (EDM) bounds. Beginning with a general...