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Frederic Derue (LPNHE-Paris CNRS/IN2P3)11/05/2026, 14:15
The top-quark mass is one of the key fundamental parameters of the Standard Model that must be determined experimentally. Its value has an important effect on many precision measurements and tests of the Standard Model. In this contribution, the top quark mass measurements by the ATLAS experiment are reviewed. These include measurements in two broad categories, the direct measurements, where...
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Lining Mao (Shanghai Jiao Tong University (CN))11/05/2026, 14:30
The high center-of-mass energy of proton-proton collisions and the large available datasets at the CERN Large Hadron Collider allow the study of rare processes of the Standard Model with unprecedented precision. Measurements of rare SM processes provide new tests of the SM predictions with the potential to unveil discrepancies with the SM predictions or provide important input for the...
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Alex Zeng Wang (University of California,Santa Cruz (US))11/05/2026, 14:45
This talk presents precise measurement of the properties of the Higgs boson, including its mass, total width, spin and CP quantum number. The measurements are performed in various Higgs boson production and decay modes, as well as their combinations. Interpretation in the context of Effective Field Theory (EFT) frameworks and specific BSM models are also shown.
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Mira Varma (Yale University (US))11/05/2026, 15:00
With the full Run 2 pp collision dataset collected at 13 TeV, very precise measurements of Higgs boson production and decay rates can be performed, shedding light over the electroweak symmetry breaking mechanism. This talk presents these precise measurements including total and fiducial cross-sections for the main Higgs boson processes as well as branching ratios into final states with bosons...
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Romano Orlandini (Universita e INFN Roma Tre (IT))11/05/2026, 15:15
In the Standard Model, the ground state of the Higgs field is not found at zero but instead corresponds to one of the degenerate solutions minimising the Higgs potential. In turn, this spontaneous electroweak symmetry breaking provides a mechanism for the mass generation of nearly all fundamental particles. Experimentally, the Higgs boson self-coupling and thereby the shape of the Higgs...
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Kevin Sedlaczek (Northern Illinois University (US))11/05/2026, 15:30
The discovery of the Higgs boson with the mass of about 125 GeV completed the particle content predicted by the Standard Model. Even though this model is well established and consistent with many measurements, it is not capable of explaining some observations by itself. Many extensions of the Standard Model addressing such shortcomings introduce additional Higgs bosons or...
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Sweta Baradia (Saha Institute of Nuclear Physics (IN))11/05/2026, 15:45
A variety of searches for the SM Higgs boson decaying to a pair of light pseudoscalars are performed with pp collisions data collected by the CMS detector. In this talk, we present recent highlights from these searches.
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Wolfgang Kilian11/05/2026, 16:30
Whizard is a universal Monte-Carlo package for calculations and event generation at high-energy colliders. In this talk, I report on recent progress in NLO off-shell top-quark pair production at the LHC. Furthermore, I describe the present support and plans for top-quark and electroweak physics at future colliders such as FCC-ee, ILC/CLIC, or a high-energy muon collider.
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Kirtimaan Mohan (Michigan State University)11/05/2026, 16:45
We present a new determination of the strong coupling constant $\alpha_s(M_Z)$ from a global QCD analysis CT25 of parton distribution functions (PDFs) that incorporates high-precision experimental measurements from the Run-2 of the Large Hadron Collider together with a large sample of other measurements over a wide interval of energies. In addition to providing an up-to-date determination of...
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Tanishq Sharma11/05/2026, 17:00
Achieving percent-level accuracy and precision in parton distribution functions (PDFs) requires a careful optimization of the theoretical and methodological ingredients entering their determination. In this talk, we present a multidimensional correlation study based on multiple CT25 PDF fits at NNLO in QCD, aimed at investigating and quantifying the correlations among the strong coupling...
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Giulia-Maria Bulugean (University of Rochester (US))11/05/2026, 17:15
Modeling angular distributions of Z-decay leptons at the Large Hadron Collider (LHC) is important in precision electroweak measurements. Z production at the LHC is dominated by gluon processes and the quark-antiquark ($q \bar q$) process accounts for only $40\%$ of the cross section. We investigate the theoretical predictions (using the POWHEG-MiNNLOPS 2.0 event generator) for the...
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Arie Bodek (University of Rochester (US))11/05/2026, 17:30
This contribution presents an overview of an improved extraction of the effective leptonic weak mixing angle, $\sin^2ฮธ^โ_{eff}$, based on the published CMS measurement of the forward-backward asymmetry in Drell-Yan events at 13 TeV. While the original CMS analysis achieved a significant reduction in experimental uncertainties, its overall precision remains limited by residual uncertainties in...
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Ernest Wallace (University of Pittsburgh)11/05/2026, 17:45
We perform a complete calculation of the next-to-next-to-leading order (NNLO) electroweak fermionic corrections to fermion-pair production processes. We do this via a semi-numerical technique that uses dispersion relations for the fermion sub-loop in two-loop box and vertex diagrams and dispersion relations and Feynman parameters for vertex diagrams with fermionic triangle sub-loops. We...
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Dr Yang Ma (UCLouvain)11/05/2026, 18:00
In this talk, I will present a comprehensive study of Higgs boson production associated with a neutrino pair at ๐+๐โ colliders (๐+๐โโโ๐๐ยฏ) at NLO electroweak (EW) accuracy in both the SM and the two-Higgs-doublet model (2HDM). I will show that new physics effects from the extended Higgs sector can be probed through EW corrections, which lead to deviations from the SM predictions reaching 6% to...
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Daniil Volkov (University of Cinccinati)11/05/2026, 18:15
We present the first complete two-loop calculation of the electric and chromo-electric dipole moments of the light quarks and the gluon, as well as contributions to CP-violating lepton-quark interactions, in the unconstrained two-Higgs doublet model. We include the most general Yukawa interactions of the Higgs doublets with the Standard Model fermions up to quadratic order, and allow for...
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Dorival Gonรงalves (Oklahoma State University)12/05/2026, 14:00
Angular correlations in Higgs decays to electroweak gauge bosons, $h \to ZZ^*,WW^*$, provide a powerful probe of both new physics effects and quantum information observables. At leading order, the system admits an effective two-qutrit description, yielding entangled states across the entire kinematic spectrum. We show that next-to-leading order electroweak corrections introduce significant...
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Alberto Navarro (Oklahoma State University)12/05/2026, 14:15
We present a systematic study of semi-leptonic decays $h \to V V^* \to \ell^+\ell^- q\bar{q}$ and $\ell^\pm \nu_\ell q\bar{q}'$, including finite final state fermion masses, NLO QCD, and NLO electroweak corrections. We show that finite final state quark masses can induce effects that go beyond the two-qutrit description in more inclusive regimes, while remaining controllable with suitable...
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Nicholas Pinto (Johns Hopkins University (US))12/05/2026, 14:30
Spin correlations in the Higgs boson decay to four leptons are investigated through detailed studies of kinematic distributions, using matrix element techniques to maximize sensitivity to the tensor structure of the Higgs boson interactions. The analysis, based on data collected by the CMS experiment at the LHC, probes the full decay dynamics, including quantum mechanical interference effects...
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Marcel I. Yanez12/05/2026, 14:45
We investigate how CPโviolating topโHiggs couplings could influence topโquark pair production at the LHC. To study these effects, we construct the reduced spin density matrix of the $t \bar{t}$ final state and explore a broad class of observables, including those motivated by quantumโinformation approaches to spin correlations. We make use of an automated framework that provides the reduced...
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Harman Singh (University of Pittsburgh)12/05/2026, 15:00
Final state hard radiation of photons or gluons is a critical NLO phenomena to consider at high energy colliders since it can change the kinematics and physics probed. In the maturing field of quantum information at colliders there has been an increased interest in investigating the effect of radiation on the bipartite spin entanglement of fermion pairs. Within this quantum information...
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Peng-Cheng Lu (Shandong university)12/05/2026, 15:15
We study the $\gamma\gamma \to \tau^+\tau^-$ process in Pb--Pb ultraperipheral collisions, including the full spin information of the $\tau^+\tau^-$ system. We present predictions for the corresponding cross sections and spin correlations at next-to-leading-order electroweak accuracy, and find that the electroweak correction increases the total cross section by about nine per mille at the...
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Youle Su (University of Pittsburgh)12/05/2026, 15:30
We present a quantum tomography study of fermion pair production at future $e^+e^-$ colliders, emphasizing how longitudinal beam polarization controls the two-qubit spin density matrix. We study the processes $e^+ e^- \to t\bar{t},\ e^+e^-\to \mu^+\mu^-$ and Bhabha scattering $e^+e^-\to e^+e^-$, representing the mass threshold behavior, the $Z$ pole resonance and the $s/t$-channel interplay....
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Morgan Cassidy12/05/2026, 15:45
Sometimes referred to as the temporal Bell inequality, the Leggett-Garg inequality (LGI) is a statement about correlations among measurements of a system at different times. Previously studied in quantum-mechanical systems such as neutrino oscillations, the spin precession of the muon at muon g-2 experiments provides a new pathway for measuring the LGI. In this talk Iโll discuss steps for...
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Krzysztof Mekala12/05/2026, 16:30
At future high-energy colliders, such as a multi-TeV muon collider or the high-energy stages of a linear $e^+e^-$ collider, collinear radiation of electroweak gauge bosons becomes significant. In this regime, vector-boson fusion and vector-boson scattering processes play a pivotal role in phenomenological studies, exhibiting kinematic signatures distinct from traditional $s$-channel...
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Juhun Kwak12/05/2026, 16:45
We study the productions of single heavy Higgs bosons in the Two-Higgs-Doublet Models (2HDMs) with an electroweak (EW) gauge boson at a multi-TeV muon collider. Particular attention is devoted to the production of the charged scalars. We find that the single production via the radiative return in the effective boson approximation and the associated productions are complementary to one another,...
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Ishmam Mahbub (University of Minnesota Twin Cities)12/05/2026, 17:00
Colliders continue to push our understanding of electroweak (EW) interactions to ever higher energies. At high energies ($E \gg m_W,\,m_Z,\,m_h$), the broken EW theory is expected to converge to the unbroken theory. This is the electroweak restoration regime. We investigate how linear and non-linear realizations of the EW symmetry can be probed by comparing the relative longitudinal diboson...
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Peiran Li (University of Minnesota)12/05/2026, 17:15
Higgs final states are central targets in the search for physics beyond the Standard Model. In the conventional picture, $SU(2)$ symmetry together with the Goldstone equivalence theorem correlates Higgs and gauge-boson final states, implying comparable sensitivities in channels such as $hh$, $ZZ$, and $WW$ for heavy resonances. In this work, we identify a simple way to parametrically violate...
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Kushan Panchal (University of Maryland, College park)12/05/2026, 17:30
The anomalous magnetic moment of the muon, i.e. $(g-2)$, is one of the versatile and promising probes of new physics at the GeV scale, particularly for $Z'$ gauge bosons that couple to both leptons and quarks. Due to inputs from experiments, lattice QCD as well as theory collaborations, one can constrain such BSM theories using various combinations of these inputs. Based on this idea, in this...
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Richard Ruiz (Institute of Nuclear Physics (IFJ) PAN)12/05/2026, 17:45
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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Cole Erik Kampa (Northwestern University (US))12/05/2026, 18:00
Measurements of processes involving multiboson final states constitute a precision test of the Standard Model. Moreover, discrepancies between theoretical predictions and experimental measurements could hint to new physics through the presence of anomalous gauge couplings. These processes are also dominant backgrounds for Higgs boson measurements, and searches for new particles with diboson...
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12/05/2026, 18:15
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