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Article
Precision Measurement of the Neutron Twist-3 Matrix Element d(2)(n): Probing Color Forces
Arts & Sciences Articles
  • M. Posik
  • D. Flay
  • W. Armstrong
  • Todd Averett, William & Mary
  • J. Katich, William & Mary
  • A. Kelleher, William & Mary
  • H. Yao, William & Mary
  • B. Zhao, William & Mary
Document Type
Article
Department/Program
Physics
Pub Date
1-1-2014
Series
113
Publisher
Physical Review Letters
Abstract

Double-spin asymmetries and absolute cross sections were measured at large Bjorken x (0.25 of 3.21 and 4.32 GeV2/c(2), with an absolute precision of about 10(-5). Our results are found to be in agreement with lattice QCD calculations and resolve the disagreement found with previous data at < Q(2)> = 5 GeV2/c(2). Combining d(2)(n) and a newly extracted twist-4 matrix element f(2)(n), the average neutron color electric and magnetic forces were extracted and found to be of opposite sign and about 30 MeV/fm in magnitude.

DOI
10.1103/PhysRevLett.113.022002
Citation Information
M. Posik, D. Flay, W. Armstrong, Todd Averett, et al.. "Precision Measurement of the Neutron Twist-3 Matrix Element d(2)(n): Probing Color Forces" Iss. 2 (2014)
Available at: http://works.bepress.com/todd-averett/35/