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Emanuele Re (Universita & INFN, Milano-Bicocca (IT))01/06/2026, 09:00
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Ivan Novikov01/06/2026, 09:30
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Timo Janssen01/06/2026, 10:00
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Tobias Golling (Universite de Geneve (CH))01/06/2026, 11:00
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Anna Hallin (University of Hamburg)01/06/2026, 11:30
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Lukas Alexander Heinrich (Technische Universitat Munchen (DE))01/06/2026, 12:00
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Giulia Lavizzari (Universita & INFN, Milano-Bicocca (IT))01/06/2026, 13:30
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Luca Cadamuro (IJCLab - CNRS/IN2P3 - Université Paris-Saclay (FR))01/06/2026, 14:00
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Michele D'Andrea (INFN and Università di Genova (IT))01/06/2026, 14:30
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Jay Ajitbhai Sandesara (University of Wisconsin Madison (US))02/06/2026, 09:00
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Dr Marco Letizia02/06/2026, 09:30
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Luigi Favaro (Universite Catholique de Louvain (UCL) (BE))02/06/2026, 10:00
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Pamela Ferrari (Nikhef National institute for subatomic physics (NL))02/06/2026, 11:00
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Jorge de Blas (Universidad de Granada (ES))02/06/2026, 11:30
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Daniel Thomas Murnane (Niels Bohr Institute, University of Copenhagen)02/06/2026, 12:00
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02/06/2026, 14:30
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02/06/2026, 15:00
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Maria Ubiali (University of Cambridge (GB))03/06/2026, 11:00
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Morgan Del Gratta03/06/2026, 11:30
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Paolo Garbarino03/06/2026, 12:00
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Alejo Nahuel Rossia (University of Padua and INFN Sezione di Padova)
We perform the first-ever global analysis of the importance of the full 2-loop RGE in SMEFT. We integrate the full set of two-loop RGE equations numerically and feed the result into the SMEFiT framework. With this, we evaluate its impact on global SMEFT fits at HL-LHC and FCC-ee. Then, we also fit a large set of tree and one-loop matched models to analyze the two-loop RGE impact on the...
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Erik Bachmann (Technische Universitaet Dresden (DE))
Understanding the mechanism of electroweak symmetry breaking (EWSB) remains one of the key open questions to be explored at the LHC. Measurements of vector boson polarization provide an exceptional opportunity to tackle this task due to the direct connection between longitudinal polarization and the EWSB. However, in most processes of interest the (pure) longitudinal component is by far the...
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Varsha Senthilkumar (Nikhef National institute for subatomic physics (NL))
While the discovery of the Higgs boson completed the Standard Model (SM), several fundamental questions remain unresolved, including the hierarchy problem and the nature of dark matter. Many well-motivated extensions of the SM introduce additional scalar bosons through an extended Higgs sector, providing rich phenomenology accessible at the LHC.
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A powerful strategy to probe such models is the... -
Oleksii Kurdysh (Centre National de la Recherche Scientifique (FR))
Based on https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2025-034/: Interpretations of a search for Higgs boson pair production in the bbyy final state using the Standard Model Effective Field Theory (SMEFT) and Higgs Effective Field Theory (HEFT) frameworks are presented. The search uses 140 fb-1 and 168 fb-1 of pp collision data at centre-of-mass energy of 13 TeV and...
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Samuel Jankovych (Nikhef National institute for subatomic physics (NL))
Distinguishing quark-initiated jets from gluon-initiated jets is a powerful handle for multiboson measurements at the LHC: in vector-boson scattering (VBS) and vector-boson fusion (VBF) topologies, quark/gluon tagging can enhance signal purity by identifying the characteristic quark-initiated forward jets and suppressing QCD-initiated backgrounds such as V+jets; additionally, the differing...
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Konstantin Schmid
Higgs pair production offers the opportunity to probe correlations among the couplings of one or two Higgs bosons to fermions and gauge bosons. In this context, it serves as a powerful test of the underlying EFT framework. In this talk, we study Higgs pair production via gluon fusion within the Higgs Effective Field Theory (HEFT) including NLO and NNLO operators. Furthermore, we complement...
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Hesham El Faham (The University of Manchester)
We present a comprehensive analysis of dimension-8 and dimension-6 effects in fully leptonic WZ and WW production at the Large Hadron Collider (LHC) within the Standard Model (SM) Effective Field Theory (SMEFT). We focus on dimension-8 operators with maximal energy growth in the quark–(anti)quark-initiated production channel and assess their impact differentially through a variety of...
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Torben Lange (National Institute of Chemical Physics and Biophysics (EE))
Since the discovery of the Higgs boson in 2012, great efforts have been made to understand this most vital particle of the Standard Model of particle physics (SM). With many quantities of this new boson now measured, the trilinear Higgs self coupling λ and double Higgs boson production (HH) has become a focal point of the LHC physics community and a core part of the ongoing and upcoming...
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Krzysztof Mekala
At energies well above the electroweak scale, lepton collisions are dominated by collinear radiation of electroweak gauge bosons from the initial-state splittings. In this regime, VBF-like topologies become more important than s-channel annihilation processes. For future high-energy lepton colliders, such as a multi-TeV muon collider, Electroweak Parton Distribution Functions (EWPDFs) provide...
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Georg Wieland (University of Graz)
Gauge invariance requires physical states to be composite, even in the weak sector of the Standard Model (SM). The Fröhlich-Morchio-Strocchi (FMS) mechanism resolves this subtlety and predicts additional Higgs contributions in SM processes. In this talk, we give an introduction to the FMS mechanism, highlighting the consequences of a gauge-invariant approach to weak physics. After discussing...
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Sofie Martins (University of Graz)
While the complex structure of the spectrum of weak physics presented in part I of this talk calls for non-perturbative techniques, the FMS mechanism still offers an analytical approach: After fixing the gauge to produce a non-zero vacuum expectation value of a fundamental Higgs-field, we continue computing observables from gauge invariant operators with a regular perturbative approach...
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Jaco ter Hoeve (The University of Edinburgh)
We present projections for the New Physics reach of future high-energy colliders in the SMEFiT framework. Our analysis focuses on near-term electron–positron colliders (FCC-ee, LEP3, LCF), complemented in some cases by projections for the FCC-hh, LHeC, and MuCol. We include a wide range of processes, including Z-pole EWPOs, fermion-pair, Higgs, di-Higgs, diboson and top-quark pair production,...
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Álvaro Lozano Onrubia (IFT UAM-CSIC)
Many well-motivated scalar extensions of the Standard Model (SM) predict new, purely bosonic sources of CP violation (CPV). In previous work, we established that the correlated observation of carefully selected bosonic processes provides a simple yet powerful strategy to unambiguously reveal the presence of CP violation. Within the Complex Two-Higgs Doublet Model (C2HDM), combinations of...
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Dr Yasar Hicyilmaz (University of Southampton)
This talk explores a unique $pp \rightarrow \text{Higgs} \rightarrow Z'Z' \rightarrow 4\ell$ ($\ell = e, \mu$) signal at the Large Hadron Collider (LHC). Within this context, the `Higgs' denotes either the Standard Model (SM)-like state discovered in 2012 or a lighter scalar emerging from a theoretical framework that includes a spontaneously broken $U(1)'$ gauge symmetry alongside the SM. This...
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Clara Hernández García (Universidad de Granada)
Multi-boson processes are a valuable tool for deepening our understanding of the dynamics of the Higgs boson. In this talk we evaluate if they can be used to shed some light on the question of its transformation under the Standard Model symmetry group. To address this we resort to the application of on-shell amplitude methods to processes involving massive vectors and scalars. We construct the...
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Samuel Rosende Herrero (IFT UAM-CSIC)
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.
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We analyze two-to-two... -
Michal Jakub Ryczkowski (Università di Padova and INFN, Sezione di Padova)
This work presents a next-to-next-to-leading order (NNLO) QCD study of Higgs pair production in association with a vector boson, an important channel for probing Higgs boson couplings and beyond the Standard Model (BSM) physics. We obtain and compare predictions within two EFT frameworks - Standard Model Effective Field Theory (SMEFT) and Higgs Effective Field Theory (HEFT) - assessing the...
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Alexandro Martone (L2I Toulouse, CNRS/IN2P3, Université de Toulouse)
The VBS VVh process has recently gained increasing attention, both theoretically and experimentally [1,2], as it provides a complementary probe to di-Higgs production with excellent sensitivity to the quartic gauge-Higgs coupling, VVHH, where V denotes either a W or Z boson.
Published results so far model potential modifications to the quartic gauge-Higgs coupling within the κ-framework. In...
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Atri Dey
In this work we have shown the possibility to probe the Composite two Higgs doublet model (C2HDM) via di-Higgs searches in HL-LHC. The additional vector-like heavy top quarks and additional CP-even scalars can play a significant role through additional loop contributions in gg->hh Feynman diagrams, which can make it significantly different than SM-like scenarios. We have performed a detailed...
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Richard Ruiz (Institute of Nuclear Physics (IFJ) PAN)
LHC data and phenomenological estimates agree that polarization interference is inherently small for multiboson production at the LHC. In this talk, we show that this could be understood from kinematical arguments and angular momentum conservation, and is a non-trivial consequence of the (near) masslessness of initial- and final-state fermions coupling to intermediate, helicity-polarized weak...
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Jose Daniel Domenech Moya (IFT - UAM)
We focus on the bosonic sector of these two EFTs and do on-shell matching between HEFT and SMEFT by identifying their amplitudes for multiple Higgs production from VBF. By solving this matching, we extract a set of relations among their respective effective coefficients. In particular, we consider dim6 SMEFT operators and the dim8 SMEFT operators with 4-derivatives. In the HEFT, we consider...
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Barbara Anna Erdelyi (Università degli Studi di Padova and INFN Sezione di Padova)
In this study, we build upon existing literature on two-loop renormalization group equations (RGEs) for the dimension-six Standard Model Effective Field Theory operator involving two gluons and two Higgs bosons. This operator can generate an effective tree-level coupling between gluons and a Higgs boson, hence affecting the Higgs boson production via gluon-gluon fusion. In particular, we...
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Stefano Di Noi (KIT (ITP))
We investigate the potential of future electron-positron colliders, such as FCC-ee and CEPC, to probe 2-Higgs-doublet models (2HDMs) that facilitate a strong first-order electroweak phase transition (SFOEWPT), a necessary condition for electroweak baryogenesis. Focusing on a 2HDM in the CP-conserving limit, we identify parameter regions consistent with an SFOEWPT and evaluate their...
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