|Title: ||A Mass inequality for the Xi* and Theta+ pentaquarks.|
|Authors: ||Karliner, Marek|
Lipkin, Harry J
|Issue Date: ||Jan-2004|
|Publisher: ||HEP, Cavendish Laboratory, University of Cambridge|
|Series/Report no.: ||Cavendish-HEP-04-08|
|Abstract: ||We derive an upper bound on the mass difference between the and +
pentaquarks which are the manifestly exotic members of the SU(3)f antidecuplet.
The derivation is based on simple assumptions about SU(3)f symmetry
breaking and uses the standard quantum mechanical variational method. The
resulting rather robust bound is more than 20 MeV below the experimentally
reported − + mass difference, emphasizing the need for confirmation of
the experimental mass values and placing strong constraints on quark models
of the pentaquark structure.|
|Appears in Collections:||Scholarly works - High Energy Physics|
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