Quarks, diquarks and QCD mixing in the $N^*$ resonance spectrum

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dc.creatorZhao, Qiang
dc.creatorClose, Frank E.
dc.date2006-05-31
dc.date2006-11-09
dc.date.accessioned2026-07-07T10:41:40Z
dc.date.available2026-07-07T10:41:40Z
dc.descriptionWe identify a "$Λ$ selection rule" for $N^*$ resonances in the presence of QCD mixing effects. We quantify these mixing effects from existing data and predict amplitudes for exciting {\bf 20} representations in SU(6), which are forbidden in strict diquark models. By classifying Particle-Data-Group (PDG) states at N=2, we show that $γN\to KΛ$, $K^*Λ$, $KΣ$, $K^*Σ$, and $J/ψ\to \bar{p}N^*$ are ideal probes of baryon dynamics and for establishing whether strongly correlated diquarks survive for $L > 0$.
dc.descriptionExtended version accepted by PRD
dc.identifierhttps://arxiv.org/abs/hep-ph/0605336
dc.identifierhttp://arxiv.org/abs/hep-ph/0605336
dc.identifierPhys.Rev.D74:094014,2006
dc.identifierdoi:10.1103/PhysRevD.74.094014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181696
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleQuarks, diquarks and QCD mixing in the $N^*$ resonance spectrum
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