https://doi.org/10.1140/epja/i2008-10656-8
Regular Article - Experimental Physics
Δ -resonances: Quark models, chiral symmetry and AdS/QCD
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Bonn, Germany
* e-mail: klempt@hiskp.uni-bonn.de
Received:
26
June
2008
Accepted:
24
September
2008
Published online:
31
October
2008
The mass spectrum of Δ -resonances is compared to predictions based on three quark-model variants, to predictions assuming that chiral symmetry is restored in high-mass baryon resonances, and to predictions derived from AdS/QCD. The latter approach yields a nearly perfect agreement when the confinement property of QCD is modeled by a soft wall in AdS.
PACS: 11.25.Tq Gauge/string duality – / 11.30.Rd Chiral symmetries – / 12.40.Yx Hadron mass models and calculations – / 14.20.Gk Baryon resonances with S = 0 –
© SIF, Springer-Verlag Berlin Heidelberg, 2008
