14–17 Jan 2024
Aussois, Centre Paul Langevin
Europe/Zurich timezone

Rapidity-only evolution of TMDs

15 Jan 2024, 14:15
30m
Aussois, Centre Paul Langevin

Aussois, Centre Paul Langevin

Speaker

Giovanni Antonio Chirilli

Description

The most known scheme to regulate the rapidity/UV divergences of the Transverse Momentum Distribution operators due to the infinite light-like gauge links is the Collis Soper Sterman formalism or the Soft Collinear Effective Theory formalism. An alternative procedure is provided by the scheme used in the small-x physics. The corresponding evolution equations differ already in leading order. In view of the future Electron-Ion Collider accelerator, which will probe the TMDs at values of the Bjorken x in the region between small-x to x $\sim$ 1, the different formalisms need to be reconciled. I will discuss the conformal properties of TMD operators and present the result of the conformal rapidity evolution of TMD operators in the Sudakov region.
In particular, I will present the calculation of the scale of the coupling constant obtained using the BLM procedure.

Author

Presentation materials