arXiv:1205.6410·v2·High Energy Physics — Lattice
A Lattice Study of the Glue in the Nucleon
R. Horsley🇬🇧 · R. Millo🇬🇧 · Y. Nakamura🇯🇵 · H. Perlt🇩🇪 · D. Pleiter🇩🇪 · P. E. L. Rakow🇬🇧 · G. Schierholz🇩🇪 · A. Schiller🇩🇪 · F. Winter🇬🇧 · J. M. Zanotti🇦🇺
Abstract
By introducing an additional operator into the action and using the Feynman-Hellmann theorem we describe a method to determine both the quark line connected and disconnected terms of matrix elements. As an illustration of the method we calculate the gluon contribution (chromo-electric and chromo-magnetic components) to the nucleon mass.
Comments: 11 pages, 3 figures, typos corrected, published version (Phys. Lett. B)