LoopFest XXIV

Contribution List

4. Factorization and Resummation for PDFs at threshold

Marvin Schnubel (Nikhef)

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...

1. NLO corrections to inclusive $\bar{B} \to X_s \gamma$ decays at subleading power

Riccardo Bartocci (Karlsruhe Institute of Technology (KIT))

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...

3. Parity-Violating Moller Scattering at NNLO: Electroweak bosonic contribution

Juhun Kwak (University of Pittsburgh)

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.

2. The spectrum of Feynman-integral geometries at two loops

Piotr Bargiela (The University of Edinburgh)

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...