Citation
Xd. Ji et Cw. Jung, Studying hadronic structure of the photon in lattice QCD, PHYS REV L, 86(2), 2001, pp. 208-211
Citations number
15
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007
→ ACNP
Volume
86
Issue
2
Year of publication
2001
Pages
208 - 211
Database
ISI
SICI code
0031-9007(20010108)86:2<208:SHSOTP>2.0.ZU;2-1
Abstract
We show that the matrix element of a local quark-gluon operator in the phot
on state, [gamma (k lambda)\(O) over cap\gamma (k lambda)], can be calculat
ed in lattice QCD. The result is generalized to other quantities involving
spacelike photons, including the transition form factor gamma gamma* --> pi
(0) and the virtual-photon-nucleon Compton amplitude [gamma *N \ gamma *N]
which can be used to define the generalized Drell-Hearn-Gerasimov and Bjor
ken sum rules.