9 research outputs found
Prospects for Pentaquark Searches in Annihilations and Collisions
Recent strong experimental evidence of a narrow exotic S = +1 baryon
resonance, , suggests the existence of other exotic baryons. We
discuss the prospects of confirming earlier experimental evidence of
and the observation of additional hypothetical exotic baryons in
annihilations and collisions at LEP and B Factories
History of exotic Meson (4-quark) and Baryon (5-quark) States
I briefly review the history of exotic meson (4-quark) and baryon (5-quark)
states, which is rooted in the formalism of Regge pole and duality. There are
robust model-independent predictions for the exchange of 4-quark (Baryonium)
Regge trajectories in several processes, which are strongly supported by
experiment. On the other hand the predictions for the spectroscopy of 4-quark
resonances are based on specific QCD inspired models, with some experimental
support. The corresponding predictions for the recently discovered exotic
baryon (Pentaquark) state are briefly discussed.Comment: 14 pages Latex including 4 eps figures, final version to appear as a
topical review in J. Phys.
Moments of inertia, nucleon axial-vector coupling, the {\bf 8}, {\bf 10}, and mass spectrums and the higher SU(3)_f representation mass splittings in the Skyrme model
The broad importance of a recent experimental discovery of pentaquarks
requires more theoretical insight into the structure of higher representation
multiplets. The nucleon axial-vector coupling, moments of inertia, the {\bf 8},
{\bf 10}, , and absolute mass spectra and the
higher SU(3) representation mass splittings for the multiplets ,
, , , , , and are computed in the framework of the minimal extended
Skyrme model by using only one free parameter, i.e., the Skyrme charge . The
analysis presented in this paper represents simple and clear theoretical
estimates, obtained without using any experimental results for higher
(,...) multiplets. The obtained results are in good agreement
with other chiral soliton model approaches that more extensively use
experimental results as inputs.Comment: 22 pages, 12 figures, 9 tables, version accepted in JHE