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...
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...
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...
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.
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...
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...
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...
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.
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...
The computation of higher-order corrections in QCD is complicated by infrared singularities, which must be isolated and cancelled to obtain a finite result.
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.
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).
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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...
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...
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...
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...
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...
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.
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...
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...
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...
