Renormalization in Large Momentum Effective Theory of Parton Physics
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PhysRevLett.120.112001.pdf
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132.83 KB
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Author(s)
Ji, Xiangdong
Zhang, Jian-Hui
Date Issued
March 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Ji, Xiangdong, et al. “Renormalization in Large Momentum Effective Theory of Parton Physics.” Physical Review Letters, vol. 120, no. 11, Mar. 2018. © 2018 American Physical Society
Version
Final published version
Abstract
In the large-momentum effective field theory approach to parton physics, the matrix elements of nonlocal operators of quark and gluon fields, linked by straight Wilson lines in a spatial direction, are calculated in lattice quantum chromodynamics as a function of hadron momentum. Using the heavy-quark effective theory formalism, we show a multiplicative renormalization of these operators at all orders in perturbation theory, both in dimensional and lattice regularizations. The result provides a theoretical basis for extracting parton properties through properly renormalized observables in Monte Carlo simulations.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.120.112001
