Back to Search
Start Over
Quasi parton distributions and the gradient flow
- Source :
- Journal of High Energy Physics
- Publication Year :
- 2017
- Publisher :
- Springer/SISSA, 2017.
-
Abstract
- We propose a new approach to determining quasi parton distribution functions (PDFs) from lattice quantum chromodynamics. By incorporating the gradient flow, this method guarantees that the lattice quasi PDFs are finite in the continuum limit and evades the thorny, and as yet unresolved, issue of the renormalization of quasi PDFs on the lattice. In the limit that the flow time is much smaller than the length scale set by the nucleon momentum, the moments of the smeared quasi PDF are proportional to those of the light-front PDF. We use this relation to derive evolution equations for the matching kernel that relates the smeared quasi PDF and the light-front PDF. As part of this discussion, we elucidate the relationship between the quasi and light-front PDFs.<br />15 pages, no figures. Version published by JHEP
- Subjects :
- Physics
Length scale
Quantum chromodynamics
Nuclear and High Energy Physics
010308 nuclear & particles physics
High Energy Physics::Lattice
High Energy Physics - Lattice (hep-lat)
FOS: Physical sciences
Parton
01 natural sciences
Renormalization
Physics::Fluid Dynamics
High Energy Physics - Phenomenology
High Energy Physics - Phenomenology (hep-ph)
High Energy Physics - Lattice
Distribution function
Lattice (order)
0103 physical sciences
Statistical physics
Balanced flow
010306 general physics
Nucleon
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Journal of High Energy Physics
- Accession number :
- edsair.doi.dedup.....e244262d6837e41dfb3c22b1d1365941