A POLARIZED QCD CONDENSATE - NU-P ELASTIC-SCATTERING AS A PROBE OF U-A(1) DYNAMICS

Authors
Citation
Sd. Bass, A POLARIZED QCD CONDENSATE - NU-P ELASTIC-SCATTERING AS A PROBE OF U-A(1) DYNAMICS, Modern physics letters A, 13(10), 1998, pp. 791-803
Citations number
57
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields","Physycs, Mathematical
Journal title
ISSN journal
02177323
Volume
13
Issue
10
Year of publication
1998
Pages
791 - 803
Database
ISI
SICI code
0217-7323(1998)13:10<791:APQC-N>2.0.ZU;2-C
Abstract
U-A(1) dynamics have the potential to induce a polarised condensate in side a nucleon. The formation of this condensate is related to the rea lisation of U-A(1) symmetry breaking by tunneling processes such as in stantons. If it is present, the polarised condensate induces a term in g(1) which has support only at x = 0. Tunneling processes then induce a net transfer of ''spin'' from finite x to x = 0. The polarised cond ensate may be measured by comparing the flavour-singlet axial charges which are extracted from polarised deep inelastic and vp elastic scatt ering experiments.