LoopFest XXIV

Session

Parallel Session e

28 May 2026, 16:00

Physics Department (Bldg 510), Small Seminar Room

Conveners

Parallel Session e

• Yoshitaka Hatta (BNL)

10. Extracting Meson Distribution Amplitudes from Nonlocal Euclidean Correlations at Next-to-Next-to-Leading Order

Fei Yao

28/05/2026, 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.
In this talk, I will review recent progress in extracting light meson DAs...

47. Quasi-PDFs and quasi-GPDs in the massive Schwinger model using tensor networks

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...

7. Loops in Dense Fields: Precision QCD in the Color Glass Condensate

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...

62. Bootstrapping QCD amplitudes

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...