Higgs and Effective Field Theory - HEFT 2025

Session

Top / Quarks

4 Jun 2025, 15:50

503/1-001 - Council Chamber (CERN)

Conveners

Top / Quarks

• Marc Riembau (CERN)

69. Top entanglement

Eleni Vryonidou (The University of Manchester (GB))

04/06/2025, 15:50

56. EFT results in the top quark sector with the ATLAS detector

Betsy Cunnett (University of Sussex (GB))

04/06/2025, 16:20

The exceptionally large dataset collected by the ATLAS detector at the highest proton-proton collision energies provided by the LHC enables precision testing of the Standard Model. Many-parameter fits to precise measurements in the framework of the SM Effective Field Theory (EFT) are becoming a standard interpretation of LHC and other collider data. In this contribution an overview is given of...

16. Constraints on four-light quark operators in the SMEFT

Matteo Maltoni

04/06/2025, 16:40

Among the dimension-six operators in the Standard Model Effective Field Theory (SMEFT), the four-light quark (4LQ) ones introduce four-fermion contact interactions that are not present in the Standard Model (SM), featuring the (anti-) quarks that are lighter than the top one. At Leading Order (LO), they do not contribute to the main Higgs and top processes, so they are almost never included in...

46. Factorising Yukawa Structures in SMEFT with AutoEFT

Dr Magnus Schaaf (Technical University of Munich)

04/06/2025, 17:00

In the Standard Model (SM), flavour-specific effects originate from the Higgs couplings to fermions encoded in the Yukawa matrices. UV-complete extensions of the SM typically introduce additional flavour-dependent couplings, which can significantly affect precision collider and flavour observables. In this talk, we explore the flavour structure of higher-dimensional operators in the SM...