Generalized parton distributions and gravitational form factors at large momentum transfer
Journal Article
·
· Journal of High Energy Physics (Online)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
Within the soft collinear effective theory (SCET), we derive a factorization theorem which resums Sudakov logarithms (αs ln2( –t))n to all orders in the quark-in-quark generalized parton distribution (GPD) at large momentum transfer t, and perform a consistency check to one-loop. We show that the same Sudakov factor appears in the ‘Feynman’ contribution to the GPDs of the nucleon. Our result enables the resummation of all the large logarithms ln Q2 and ln2 t in exclusive processes with two hard scales Λ$$^{2}_{QCD}$$ ≪ |t| ≪ Q2. We also present a SCET power counting analysis of the Feynman contributions to the GPDs and show that the x-dependence of GPDs factorizes at large-t with controlled corrections. This in particular implies that any ratio of GPD moments such as the electromagnetic and gravitational form factors (GFF) is perturbatively calculable in this approximation. Furthermore, we identify a novel order αs power-law t-dependence in the GPD and the D-type GFF that will dominate over the standard order α$$^{2}_{s}$$ ‘leading twist’ asymptotic contribution in the phenomenologically relevant region of t.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 3010979
- Report Number(s):
- BNL--229282-2025-JAAM
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 12 Vol. 2025; ISSN 1029-8479
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Soft-Collinear Mode for Jet Rates in Soft-Collinear Effective Theory
Precision DIS thrust predictions for HERA and EIC
The soft quark Sudakov
Journal Article
·
Thu Jan 28 19:00:00 EST 2016
· Physical Review D
·
OSTI ID:1334119
Precision DIS thrust predictions for HERA and EIC
Journal Article
·
Wed Jul 23 20:00:00 EDT 2025
· Journal of High Energy Physics (Online)
·
OSTI ID:2575580
The soft quark Sudakov
Journal Article
·
Tue May 19 20:00:00 EDT 2020
· Journal of High Energy Physics (Online)
·
OSTI ID:1635610
Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Classical and Quantum Gravity
Effective Field
Factorization
Field Theory and Polynomials
Nuclear and Particle Physics
Particle Physics
Properties of Hadrons
Quantum Electrodynamics
Relativistic and Many-body Calculations
Renormalization Group
Theoretical Particle Physics
Theories of QCD
Classical and Quantum Gravity
Effective Field
Factorization
Field Theory and Polynomials
Nuclear and Particle Physics
Particle Physics
Properties of Hadrons
Quantum Electrodynamics
Relativistic and Many-body Calculations
Renormalization Group
Theoretical Particle Physics
Theories of QCD