Nucleon Structure Functions from Operator Product Expansion on the Lattice

Deep-inelastic scattering, in the laboratory and on the lattice, is most instructive for understanding how the nucleon is built from quarks and gluons. The long-term goal is to compute the associated structure functions from first principles. So far this has been limited to model calculations. In th...

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Vydané v:	Physical review letters Ročník 118; číslo 24; s. 242001
Hlavní autori:	Chambers, A. J., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, G., Schiller, A., Somfleth, K., Young, R. D., Zanotti, J. M.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States 15.06.2017
ISSN:	0031-9007, 1079-7114, 1079-7114
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Popis
Shrnutí:	Deep-inelastic scattering, in the laboratory and on the lattice, is most instructive for understanding how the nucleon is built from quarks and gluons. The long-term goal is to compute the associated structure functions from first principles. So far this has been limited to model calculations. In this Letter we propose a new method to compute the structure functions directly from the virtual, all-encompassing Compton amplitude, utilizing the operator product expansion. This overcomes issues of renormalization and operator mixing, which so far have hindered lattice calculations of power corrections and higher moments.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114 1079-7114
DOI:	10.1103/PhysRevLett.118.242001