DOI: 10.1140/epjad/s2005-04-001-7
Today's view on strangeness
John EllisCERN, CH-1211 Geneva 23, Switzerland
johne@mail.cern.ch
(Received 01 December 2004 / Published online 08 February 2005)
Abstract
There are several different experimental indications, such as the pion-nucleon Σ term and polarized deep-inelastic scattering, which suggest that the nucleon wave function contains a hidden
component. This is expected in chiral soliton models, which also predicted the existence of new exotic baryons that may recently have been observed. Another hint of hidden strangeness in the nucleon is provided by copious φ production in various
annihilation channels, which may be due to evasions of the Okubo-Zweig-Iizuka rule. One way to probe the possible polarization of hidden
pairs in the nucleon may be via Λ polarization in deep-inelastic scattering.
PACS: 12.39.Dc Skyrmions - 13.75.Cs Nucleon-nucleon interactions - 14.20.-c Baryons
CERN-PH-TH/2004-231 hep-ph/0411369
© Società Italiana di Fisica, Springer-Verlag 2005
