13–17 Oct 2025
Physics Department, Milan University
Europe/Rome timezone

Generalization of collinear factorization in perturbative QCD

14 Oct 2025, 15:45
25m
Sala Consiglio (Physics Department, Milan University)

Sala Consiglio

Physics Department, Milan University

Via Celoria 16, 20133 Milan (Italy)

Speaker

Prasanna Kumar Dhani (University of Zurich)

Description

We consider the most general factorization properties of scattering amplitudes in perturbative QCD in both collinear and collinear-soft limits. While scattering amplitudes obey strict collinear factorization (SCF) in the time-like collinear region to all perturbative orders, SCF is known to break in the so-called space-like collinear region. We generalize previously known results of SCF breaking to more than one collinear direction. We also extend our analysis to the simultaneous collinear-soft factorization.

Author

Prasanna Kumar Dhani (University of Zurich)

Co-authors

German Rodrigo (IFIC Valencia) Leandro Cieri (IFIC, UV - CSIC)

Presentation materials