Evidence for a spin-quartet of nucleon resonances at 2GeV

Anisovich, A. V.; Klempt, E.; Nikonov, V. A.; Sarantsev, A. V.; Thoma, U.

doi:10.1016/j.physletb.2012.03.066

arXiv 2011-11-26 DOI 10.1016/j.physletb.2012.03.066 0 مشاهدة

Evidence for a spin-quartet of nucleon resonances at 2GeV

Anisovich, A. V. · Klempt, E. · Nikonov, V. A. · Sarantsev, A. V. · Thoma, U.

High Energy Physics - Experiment

الأصل · EN

Results from a multi-channel partial wave analysis of elastic and inelastic πN and γN induced reactions are presented. The analysis evidences the existence of a spin-quartet of nucleon resonances with total angular momenta Jᵖ=1/2+,..., 7/2+. All states fall into a ±130MeV mass gap centered at 1.97GeV. The spin quartet is at variance with S-wave diquark configurations required in classical di-quark models.

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