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Renormalization in Large Momentum Effective Theory of Parton Physics

Author(s)
Ji, Xiangdong; Zhang, Jian-Hui
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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.
Date issued
2018-03
URI
http://hdl.handle.net/1721.1/114505
Department
Massachusetts Institute of Technology. Center for Theoretical Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
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
ISSN
0031-9007
1079-7114

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