Eur. Phys. J. C 21, 105-114 (2001)
DOI: 10.1007/s100520100726
The flavor asymmetry of polarized anti-quarks in the nucleon
F.-G. Cao and A.I. SignalInstitute of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand f.g.cao@massey.ac.nz
a.i.signal@massey.ac.nz
(Received: 12 April 2001 / Revised version: 30 May 2001 / Published online: 19 July 2001 -© Springer-Verlag / Società Italiana di Fisica 2001 )
Abstract
We present a study of the flavor asymmetry of polarized anti-quarks
in the nucleon using the meson cloud model.
We include contributions both from the vector mesons and the
interference terms
of pseudoscalar and vector mesons.
Employing the bag model, we first give the polarized valence
quark distribution
of the 
meson and the interference distributions.
Our calculations show that the interference effect mildly increases
the
prediction
for
at intermediate x region.
We also discuss the contribution of "Pauli blocking" to the
asymmetry.
© Società Italiana di Fisica, Springer-Verlag 2001
