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Numerical analysis of the quark fraction of the proton spin

Abstract

We report on a lattice QCD estimate of the quark spin fraction of the proton spin. The estimate is arrived at by means of a lattice QCD simulation of the polarized proton matrix element of the Adler-Bell-Jackiw anomaly. The preliminary result of the simulation is that this fraction is rather small. This is in accord with the interpretation of the EMC experiment that the quark spins are responsible for very little, if any, of the proton spin. (author). 7 refs, 4 figs, 2 tabs.
Authors:
Mandula, J E [1] 
  1. Department of Energy, Washington, DC (United States). Div. of High Energy Physics
Publication Date:
Dec 31, 1993
Product Type:
Conference
Report Number:
CONF-9201107-
Reference Number:
SCA: 662230; 662410; PA: AIX-26:061126; EDB-95:132693; SN: 95001462622
Resource Relation:
Conference: Adriatico research conference on polarization dynamics in nuclear and particle physics, Trieste (Italy), 7-10 Jan 1992; Other Information: PBD: 1993; Related Information: Is Part Of Polarization dynamics in nuclear and particle physics. Proceedings of the 2nd Adriatico research conference; Barut, A.O. [ed.] [Colorado Univ., Boulder, CO (United States)]; Paver, N. [ed.] [Trieste Univ. (Italy)]; Penzo, A. [ed.] [Istituto Nazionale di Fisica Nucleare, Trieste (Italy)]; Raczka, R. [ed.] [Soltan Inst. for Nuclear Studies, Otwock-Swierk (Poland)]; PB: 444 p.
Subject:
66 PHYSICS; PROTONS; QUARK MODEL; SPIN; EMC EFFECT; GLUON MODEL; GLUONS; LATTICE FIELD THEORY; PROPAGATOR; QUANTUM CHROMODYNAMICS
OSTI ID:
101445
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISBN 981-02-1423-5; TRN: XA9539763061126
Submitting Site:
INIS
Size:
pp. 227-234
Announcement Date:
Jan 16, 2004

Citation Formats

Mandula, J E. Numerical analysis of the quark fraction of the proton spin. IAEA: N. p., 1993. Web.
Mandula, J E. Numerical analysis of the quark fraction of the proton spin. IAEA.
Mandula, J E. 1993. "Numerical analysis of the quark fraction of the proton spin." IAEA.
@misc{etde_101445,
title = {Numerical analysis of the quark fraction of the proton spin}
author = {Mandula, J E}
abstractNote = {We report on a lattice QCD estimate of the quark spin fraction of the proton spin. The estimate is arrived at by means of a lattice QCD simulation of the polarized proton matrix element of the Adler-Bell-Jackiw anomaly. The preliminary result of the simulation is that this fraction is rather small. This is in accord with the interpretation of the EMC experiment that the quark spins are responsible for very little, if any, of the proton spin. (author). 7 refs, 4 figs, 2 tabs.}
place = {IAEA}
year = {1993}
month = {Dec}
}