Renormalization in Large Momentum Effective Theory of Parton Physics
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-qua...
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| Published in | Physical review letters Vol. 120; no. 11; p. 112001 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
13.03.2018
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| Online Access | Get more information |
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| Summary: | 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. |
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| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.120.112001 |