Parton physics from large-momentum effective field theory

By X. Ji. 2014

339 citations recorded by the source corpus.

Parton physics, when formulated as light-front correlations, are difficult to study non-perturbatively, despite the promise of light-front quantization. Recently an alternative approach to partons have been proposed by re-visiting original Feynman picture of a hadron moving at asymptotically large momentum. Here I formulate the approach in the language of an effective field theory for a large hadron momentum P in lattice QCD, LaMET for short. I show that using this new effective theory, parton properties, including light-front parton wave functions, can be extracted from lattice observables in a systematic expansion of 1/P, much like that the parton distributions can be extracted from the hard scattering data at momentum scales of a few GeV.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/6b117291e29d4174c6a42cea3b2481d72c2e2421

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

A Guide to Light-Cone PDFs from Lattice QCD: An Overview of Approaches, Techniques, and Results (2018, methodology): “[74] Xiangdong Ji, “Parton Physics from Large-Momentum Effective Field Theory,” Sci.”
Lattice calculation of parton distributions (2015, neutral): “[21]. where q bare is the bare distribution, Z F and ~ Z F are the wave function corrections and q ð 1 Þ and ~ q ð 1 Þ are the vertex corrections.”
Parton distributions and lattice-QCD calculations: Toward 3D structure (2020, methodology): “An alternative approach to calculating TMD PDFs from lattice QCD using so-called quasi-TMD PDFs (Ji, 2013, 2014) has been been explored recently by several groups (Ebert et al., 2020a, 2019a,b, 2020b; Ji et al., 2019a,b,c, 2020, 2015b; Vladimirov and Schäfer, 2020).”
The Structure of the Proton in the LHC Precision Era (2017, background): “In the large–momentum effective field theory (LaMET) approach, the quasi–PDF q̃(x,Λ, pz) can be related to the pz–independent light–front PDF q(x,Q2) through the following relation [581, 582]”