Learn · CERN

Talk21 min

On gauge invariance of transverse momentum dependent distributions at small x

Yacine Mehtar-Tani · CERN

Watch At CERN

About

The interplay between the small x limit of QCD amplitudes and QCD factorization at moderate x has been studied extensively in recent years. It was finally shown that semiclassical formulations of small x physics can have the form of an infinite twist framework involving Transverse Momentum Dependent (TMD) distributions in the eikonal limit. In this work, we demonstrate that small x distributions can be formulated in terms of transverse gauge links. This allows in particular for direct and efficient decompositions of observables into subamplitudes involving gauge invariant suboperators which span parton distributions. The application to Dijet production in eA collisions will be discussed beyond the correlation limit as well as a strategy to compute finite energy corrections..

0:00:00 Slide 1

0:02:01 Slide 2

0:04:02 Slide 3

0:06:03 Slide 4

0:08:04 Slide 5

0:10:05 Slide 6

0:12:06 Slide 7

0:14:07 Slide 8

0:16:08 Slide 9

0:18:09 Slide 10

0:20:10 Slide 11

The talk

  1. On gauge invariance of transverse momentum dependent distributions at small x 2020-06-03 · 21 min · CERN's player

Credits and licence

Institution
CERN
Department
Conferences
Speaker
Yacine Mehtar-Tani
Year
2020
Language
English
Source
CERN
Licence
CERN, as CERN states it. CERN's terms
Attribution
© CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
Who can watch
CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed