SIGMA-TERM IN PION ELECTROPRODUCTION NEAR-THRESHOLD

Authors
HAN BS CHEON IT CHEOUN MK YANG SN
Citation
Bs. Han et al., SIGMA-TERM IN PION ELECTROPRODUCTION NEAR-THRESHOLD, Journal of the Korean Physical Society, 33(4), 1998, pp. 394-399
Citations number
29
Categorie Soggetti
Physics
Journal title
Journal of the Korean Physical Society → ACNP
ISSN journal
03744884
Volume
33
Issue
4
Year of publication
1998
Pages
394 - 399
Database
ISI
SICI code
0374-4884(1998)33:4<394:SIPEN>2.0.ZU;2-V
Abstract
The time component of the Sigma term in pion electroproduction is show n to represent the charged pseudo-scalar quark-density distribution on the nucleon and to manifest itself in the L-0(+) amplitude. In additi on, the sum of this time component of the Sigma term and the induced p seudo-scalar term in the axial current appear as the t-channel pion po le in the Born terms for pion electroproduction near threshold.