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Sally Dawson (BNL)27/05/2026, 08:50
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Ian Moult27/05/2026, 09:00
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Rebecca von Kuk (Bern)27/05/2026, 09:30
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Valentin Hirschl (CERN)27/05/2026, 10:00
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Federico Buccioni (CERN)27/05/2026, 11:00
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Martin Link27/05/2026, 11:30
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Stefan Hoeche (Fermilab)27/05/2026, 12:00
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Peter Vander Grierd (Kentucky)27/05/2026, 14:00
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Samuel Abreu27/05/2026, 14:30
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MANFRED KRAUS (IF-UNAM)27/05/2026, 15:00
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Marvin Schnubel (Nikhef)27/05/2026, 16:00
We study factorization at next-to-leading power (NLP) in deep inelastic scattering (DIS) in the endpoint region within the framework of soft-collinear effective theory (SCET). The full QCD process is matched onto two SCET currents, whose matrix elements factorize into individual component functions. By employing endpoint reshuffling theorems that relate these component functions at endpoint...
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Supratim Das Bakshi (Argonne National Laboratory)27/05/2026, 16:00
Recent studies in the Standard Model Effective Field Theory (SMEFT) highlight the importance of consistently retaining terms of order O(1/$\Lambda^4$) in theoretical predictions. In this presentation, we analyze SMEFT at O(1/$\Lambda^4$), including 1-loop renormalization group evolution (RGE) effects arising from the scale dependence of Wilson coefficients, with explicit incorporation of...
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Luigi Bellafronte (Florida State University)27/05/2026, 16:20
Gluon-gluon fusion is the dominant channel for Higgs production at the Large Hadron Collider (LHC) and will remain a key probe of Higgs interactions at the High-Luminosity LHC, where improved experimental precision will require equally precise theoretical predictions. In this talk we focus on Higgs production via gluon-gluon fusion within the Standard Model Effective Field Theory (SMEFT) at...
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Zeno Capatti (University of Bern)27/05/2026, 16:20
The KLN theorem establishes that infrared divergences in parton‑model diagrams cancel when summed alongside diagrams that account for the simultaneous hard interaction of multiple partons within the same hadron. Meanwhile, it is well established that initial-state infrared poles and logarithms are governed by collinear factorisation. In this talk, I introduce a formalism where an initial-state...
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Sebastian Jaskiewicz27/05/2026, 16:40
Scattering amplitudes are expected to admit a factorised structure in specific kinematic limits, such as the Regge, soft and collinear limits. However, less is known about the precise mechanisms through which factorisation of n-particle amplitudes is realised at high perturbative orders, where more complex colour and kinematic structures arise. Starting with the soft anomalous dimension, in...
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Juhun Kwak (University of Pittsburgh)27/05/2026, 16:40
We present the analytic computation of the two-loop electroweak bosonic correction to the parity asymmetry in Moller scattering at low energy. The hierarchy of scales, namely $m_Z^2\gg q^2\gg m_e^2$, and the IR singularities are treated with the method of regions. We discuss the implications of our results to MOLLER at JLab and give an outlook for electron-proton and electron-nucleus scattering at P2.
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Rudi Rahn (University of Amsterdam)27/05/2026, 17:00
The analytic resummation of non-global logarithms is more involved than resummation in the global case, it for example involves intricate factorisation theorems with ingredient functions of arbitrary final state hard multiplicities. In addition, disparate treatment of distinct emissions allows for a larger set of functional dependences in non-global observables. In this talk I will present...
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Gabriele Fiore (ETH Zurich)27/05/2026, 17:00
Since the discovery of the Higgs boson at LHC, particle physics has entered a new precision era in which improving the accuracy of Standard Model predictions is essential for testing the theory and uncovering potential hints of new physics. In this context, diphoton production plays an important role, both as a probe of the Standard Model and as a background for Higgs measurements. As...
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Giulio Crisanti27/05/2026, 17:20
Magic relations are a class of integration-by-parts identities that are generated in a sector which does not itself appear in the identity. They are of particular interest because their presence causes several otherwise successful methods in the Feynman-integral computational pipeline to break down. In this talk, we present a first step toward a systematic characterisation of such identities....
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Riccardo Bartocci (Karlsruhe Institute of Technology (KIT))27/05/2026, 17:20
Theoretical predictions in hadron physics are often limited by non-perturbative uncertainties in QCD. Nevertheless, several phenomenologically important processes require improved theoretical control. Effective field theories, such as Soft-Collinear Effective Theory (SCET) and Heavy Quark Effective Theory (HQET), provide powerful tools to overcome these limitations by exploiting...
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Duarte Fontes27/05/2026, 17:40
Infrared sensitivity in asymptotically free non-abelian gauge theories is intimately connected to non-perturbative effects in processes with large momentum transfer. In the renormalon framework, such effects are probed by introducing a small gluon mass. Yet this procedure breaks gauge invariance, effectively restricting collider applications to reactions without gluons at Born level. In this...
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Xiaoyuan Zhang (MIT)27/05/2026, 17:40
In precision studies of QCD, obtaining exact analytic expressions for physical observables is important for both phenomenological predictions and uncovering theoretical structure, yet is often hindered by the complexity of Feynman integrals. While perturbative bootstrap programs have achieved remarkable success for scattering amplitudes in theories like N=4 super Yang-Mills, their extension to...
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Tobias Neumann (SMU)28/05/2026, 09:00
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Fredrick Olness (SMU)28/05/2026, 09:30
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Marco Guzzi (Kennesaw)28/05/2026, 10:00
We discuss important aspects of global PDF analyses beyond NNLO in QCD with emphasis on the impact of recent higher-order calculations that are part of the ingredients of recent approximate N^3LO PDF determinations. In particular, we discuss the role of heavy-quark mass treatments and DGLAP evolution at N^3LO in QCD.
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Tim Hobbs (Argonne National Laboratory)28/05/2026, 11:00
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Giovanni Stagnitto (Milan)28/05/2026, 11:30
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Kyle Lee (ANL)28/05/2026, 12:00
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Max Knobbe28/05/2026, 14:00
Precision QCD calculations are essential for exploiting the physics potential of future high-luminosity lepton colliders such as the FCC-ee. We present a new local infrared subtraction scheme for next-to-next-to-leading order (NNLO) QCD calculations. The method employs scalar multipole radiator functions and pure splitting remainders that are fully color and spin dependent, valid across the...
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Piotr Bargiela (The University of Edinburgh)28/05/2026, 14:00
In this talk, I will present the results of our recent paper arXiv:2512.13794 for a complete classification of the Feynman-integral geometries at two-loop order in four-dimensional Quantum Field Theory with standard quadratic propagators. Concretely, we consider a finite basis of integrals in the ’t Hooft–Veltman scheme, i.e. with D-dimensional loop momenta and four-dimensional external...
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Davide Maria Tagliabue (KIT - TTP)28/05/2026, 14:20
The computation of higher-order corrections in QCD is complicated by infrared singularities, which must be isolated and cancelled to obtain a finite result.
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I will present recent progress on the nested soft-collinear subtraction scheme, which provides a fully local and analytic subtraction for any QCD process with massless quarks and an arbitrary number of jets in the final state. -
Shun-Qing Zhang (Max Planck Institute for Physics)28/05/2026, 14:20
I will present recent progress in extending the tropical integration framework originally proposed by Borinsky to Feynman integrals with numerators. This generalisation is essential for applications in gauge theories and significantly broadens the scope of tropical Monte Carlo methods to physically relevant observables in Quantum Chromodynamics (QCD) and N=4 super Yang–Mills theory (SYM).
I...
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Cesare Mella28/05/2026, 14:40
Feynman integrals associated with geometries beyond the Riemann sphere, such as elliptic curves, K3 surfaces, and Calabi-Yau manifolds, are playing an increasingly important role in modern precision calculations, from collider physics to gravitational-wave theory. A systematic way to evaluate these integrals is through differential equations, with the goal of casting them into
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epsilon-form,... -
Giulio Gambuti (ETH Zurich)28/05/2026, 14:40
In this talk I will review recent progress in our understanding of infrared (IR) factorisation of scattering amplitude integrands. I will discuss how a detailed picture of the IR properties of gauge-theory scattering amplitudes can be exploited to derive finite-remainder integrands which are amenable to direct numerical integration, bypassing the complexity encountered in standard analytic...
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Christoph Nega (employee@tum.de;member@tum.de;faculty@tum.de;alum@tum.de)28/05/2026, 15:00
In recent years, it has been observed that period integrals of Calabi-Yau manifolds, which originate from the compactification of string theory, appear in the classical scattering of black holes. These mathematical structures were observed for the first time at the fifth post-Minkowskian (5PM) order. In my talk, I will provide a brief introduction to these objects, particularly from a...
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Adi Suresh (SLAC)28/05/2026, 15:00
We present partonic contributions to the inclusive gluon-fusion Higgs boson and Drell-Yan production cross sections at Hadron colliders at next-to-next-to-next-to-next-to leading order (N4LO). Specifically, we compute the “single-real” contributions: the interference of one-loop with two-loop amplitudes and the interference of three-loop (in the generalized leading-color limit) with tree-level...
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Fei Yao28/05/2026, 16:00
Light-cone distribution amplitudes (DAs) describe the longitudinal momentum structure of quarks inside mesons and play a central role in exclusive QCD processes and precision flavor physics. As intrinsically non-perturbative quantities, their reliable determination from first principles has long been a major challenge.
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In this talk, I will review recent progress in extracting light meson DAs... -
Christoph Dlapa (University of Hamburg)28/05/2026, 16:00
The method of differential equations has become one of the most powerful tools for the evaluation of multiloop Feynman integrals. In recent years, substantial progress has been made in extending the notion of canonical differential equations beyond the multiple polylogarithm case to integrals involving more general geometries. Nevertheless, deriving canonical forms for such systems remains...
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Herschel Chawdhry (Florida State University)28/05/2026, 16:20
Perturbative QFT calculations can pose considerable computational challenges at higher orders and higher multiplicities. At the same time, the inherently quantum-mechanical nature of these calculations makes them promising candidates to exploit the qualitatively new computational capabilities of emerging quantum computing hardware. In this talk I will present recent advances in quantum...
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Jake Montgomery (Stony Brook University)28/05/2026, 16:20
Generalized Parton Distribution functions (GPDs) are off-diagonal light-cone matrix elements that encode the internal structure of hadrons in terms of quark and gluon degrees of freedom. In this work, we present a nonperturbative study of quasi-PDFs and quasi-GPDs in the massive Schwinger model, quantum electrodynamics in 1+1 dimensions (QED2), within the Hamiltonian formulation of lattice...
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Mr Daniele Gaggero (SUNY Buffalo)28/05/2026, 16:40
We present the calculation of the 3-loop \mathcal{O}\alpha\alpha_s^2 corrections to the top quark mass. We discuss the evaluation of the elliptic integrals which appear as iterated solutions of a differential equation in canonical form.
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Farid Salazar (Temple University / Brookhaven National Lab)28/05/2026, 16:40
The Color Glass Condensate (CGC) describes QCD at very high energies, where gluons inside hadrons form a dense state that can be treated as a strong classical color field. In this regime, loop calculations differ significantly from the familiar perturbative expansion around the vacuum: quantum fluctuations propagate through a background field, Wilson lines become the relevant degrees of...
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Sergio Carrolo (Max Planck Institute For Physics)28/05/2026, 17:00
In this talk, we present a framework for computing the maximally transcendental part of planar QCD scattering amplitudes. By analyzing the maximal-weight projection of amplitudes at the integrand level, we relate these contributions to prescriptive unitarity integrals and uncover a novel analytic structure: the rational prefactors multiplying functions of maximal transcendental weight coincide...
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Dario Kermanschah28/05/2026, 17:00
I will give an overview of our approach for the direct numerical integration of two-loop corrections to electroweak production. After locally subtracting infrared and ultraviolet singularities, we enable numerical integration in momentum space through analytic integration over the energy components of the loop momenta, subtraction of threshold singularities, and the use of importance sampling...
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Matthew Forslund (Princeton)29/05/2026, 08:45
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Juergen Reuter (DESY)29/05/2026, 09:15
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Ayres Freitas (University of Pittsburgh)29/05/2026, 09:45
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Emmet Byrne29/05/2026, 10:15
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Francesco Ucci (Pavia)29/05/2026, 11:05
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Laura Reina (Florida State University)29/05/2026, 11:35
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Felix Ringer (YITP Stony Brook)29/05/2026, 12:05
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Sebastian Mizera (Columbia)29/05/2026, 12:35
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Manfred Kraus (IF-UNAM)
In this talk, I present a new perspective on spinning black holes in which their classical dynamics emerges from a tower of fixed-spin theories. Starting from quantum amplitudes for massive particles with definite spin, we construct gravitational scattering amplitudes for each spin sector and study their classical limit. Remarkably, the structure of the amplitudes reveals that the dynamics of...
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Riccardo Gonzo (Queen Mary University of London)
I will discuss the high-energy, small-angle limit of two-body classical gravitational scattering amplitudes, focusing on the tower of multi-H diagrams that govern the leading logarithmic behavior. First, I will show that the recently developed SCET forward-scattering framework for gravity is fully equivalent to the multi-Regge expansion of the classical amplitude, reproducing exactly the...
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Richard Hill (Kentucky)
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Yao Ma (ETH Zurich)
The expansion-by-regions technique is a powerful tool for analyzing the asymptotic behavior of Feynman integrals, and the first critical step is to identify all relevant regions. In Euclidean kinematics, this has been understood to all orders, formulated as an "expansion-by-subgraphs" procedure. In Minkowski kinematics, however, the situation is much more subtle.
Much progress has been made...
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