Explicit Confinement Effect on the Helicity Amplitudes of the Low-Lying Nucleon Resonances

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摘要 Calculations of helicity amplitudes for the low-lying nucleon resonances are displayed based on a non-relativistic constituent quark model with a harmonic oscillator confinement. The explicit effect of quark confinement is shown. Our results show that the effect plays sizable role on some transition amplitudes of S11 (1535) and D13(1520) resonances. The effect on the △(1232) transition amplitudes is less than 10%. However, the effect on the Roper resonance is remarkable but is inconclusive.

作者 DONGYu-Bing HEJun

机构地区 InstituteofHighEnergyPhysics

出处《Communications in Theoretical Physics》 SCIE CAS CSCD 2003年第3X期345-348,共4页 理论物理通讯（英文版）

关键词权夸克模型近似约束效应谐振跃迁螺旋性振幅 QCD 量子色动力学核子结构函数

分类号 O572.33 [理学—粒子物理与原子核物理] O572.243 [理学—粒子物理与原子核物理]

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Communications in Theoretical Physics

2003年第3X期

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Explicit Confinement Effect on the Helicity Amplitudes of the Low-Lying Nucleon Resonances

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