Observed Supersymmetry and Parity Doubling of Excited Hadrons from a Simple SpectrumGenerating Algebra
Abstract
We find remarkable agreement with the observed excitations of hadrons with a simple three parameter mass relation of the SU(3) subgroup of the underlying U(15/30) graded Lie group. The baryons are the appropriate supersymmetric partners of the mesons. An interesting feature, which is a focus of current interest, is that the baryons and isobars show parity doubling. Significantly, the ground state baryons and mesons have no place in the fit, so that the parity doubling is indicated only when excitation energy is available. This has correspondence with the parity doubling seen in recent lattice calculations, when thermal excitation is present. The agreement with experiment is comparable to the semirelativistic quark model which fits with many force parameters and where the observed parity doubling is accidental. The gross splitting of the levels is the same for the strange and the nonstrange sectors, suggesting flavour independence.
 Publication:

arXiv eprints
 Pub Date:
 August 1993
 arXiv:
 arXiv:hepph/9308314
 Bibcode:
 1993hep.ph....8314D
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 15 pages, IFT perprintIFT  P0.46/93, Latex, contact address: jdey@ueift1.dnet.nasa.gov