期刊
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷 57, 期 7, 页码 1407-1412出版社
SCIENCE PRESS
DOI: 10.1007/s11433-014-5492-3
关键词
partons; effective field theory; lattice QCD; high-energy scattering; proton structure
资金
- U. S. Department of Energy [DE-FG02-93ER-40762]
- Office of Science and Technology in Shanghai Municipal Government [11DZ2260700]
- National Natural Science Foundation of China [11175114]
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.
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