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Title: Low x physics as an infinite twist (G)TMD framework: unravelling the origins of saturation

Abstract

We show how the formulations of low x physics involving Wilson line operators can be fully rewritten into an infinite twist TMD or GTMD framework, respectively for inclusive and exclusive observables. This leads to a perfect match between low x physics and moderate x formulations of QCD in terms of GTMDs, TMDs, GPDs or PDFs. We derive the BFKL limit as a kinematic limit and argue that beyond the Wandzura-Wilczek approximation, 3-body and 4-body unintegrated PDFs should be taken into account even in this regime. Finally, we analyze how saturation should be understood as three distinct effects: saturation through non-linearities in the evolution equations at small x, saturation through multiple interactions with slow gluons

Authors:
 [1];  [2]
  1. National Centre for Nuclear Research, Warsaw (Poland)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Dept.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1574429
Report Number(s):
BNL-212341-2019-JAAM
Journal ID: ISSN 1029-8479
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 10; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Heavy Ion Phenomenology

Citation Formats

Altinoluk, Taiga, and Boussarie, Renaud. Low x physics as an infinite twist (G)TMD framework: unravelling the origins of saturation. United States: N. p., 2019. Web. doi:10.1007/JHEP10(2019)208.
Altinoluk, Taiga, & Boussarie, Renaud. Low x physics as an infinite twist (G)TMD framework: unravelling the origins of saturation. United States. doi:10.1007/JHEP10(2019)208.
Altinoluk, Taiga, and Boussarie, Renaud. Mon . "Low x physics as an infinite twist (G)TMD framework: unravelling the origins of saturation". United States. doi:10.1007/JHEP10(2019)208. https://www.osti.gov/servlets/purl/1574429.
@article{osti_1574429,
title = {Low x physics as an infinite twist (G)TMD framework: unravelling the origins of saturation},
author = {Altinoluk, Taiga and Boussarie, Renaud},
abstractNote = {We show how the formulations of low x physics involving Wilson line operators can be fully rewritten into an infinite twist TMD or GTMD framework, respectively for inclusive and exclusive observables. This leads to a perfect match between low x physics and moderate x formulations of QCD in terms of GTMDs, TMDs, GPDs or PDFs. We derive the BFKL limit as a kinematic limit and argue that beyond the Wandzura-Wilczek approximation, 3-body and 4-body unintegrated PDFs should be taken into account even in this regime. Finally, we analyze how saturation should be understood as three distinct effects: saturation through non-linearities in the evolution equations at small x, saturation through multiple interactions with slow gluons},
doi = {10.1007/JHEP10(2019)208},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2019,
place = {United States},
year = {2019},
month = {10}
}

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Works referenced in this record:

Rapidity evolution of gluon TMD from low to moderate x
journal, October 2015


Gluon TMD in particle production from low to moderate x
journal, June 2016


Power corrections to TMD factorization for Z-boson production
journal, May 2018


Sub-eikonal corrections to scattering amplitudes at high energy
journal, January 2019


Interplay of the CGC and TMD frameworks to all orders in kinematic twist
journal, May 2019

  • Altinoluk, Tolga; Boussarie, Renaud; Kotko, Piotr
  • Journal of High Energy Physics, Vol. 2019, Issue 5
  • DOI: 10.1007/JHEP05(2019)156

Small-x behavior and parton saturation: A QCD model
journal, April 1990


Unitarity and the BFKL pomeron
journal, March 1995


The Color Glass Condensate
journal, November 2010


Unitarity at small Bjorken x
journal, June 2002


Semihard processes in QCD
journal, November 1983