On the polarization of the nucleon sea in the meson-cloud model
K.G. Boreskov - A.B. Kaidalov
ITEP, B.Cheremushkinskaya 25, 117259 Moscow, Russia
Received: 30 October 1998 / Revised version: 4 February 1999 / Published online: 15 July 1999
We show that the meson-cloud model predicts a substantial polarization of the sea quarks of the nucleon, because of the interference of and exchanges. This polarization is strongly flavour-dependent. The model gives an explanation of the strong increase in the structure function g1 that has isospin I=1 at small x.