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    • Parton content of the nucleon from distribution amplitudes and transition distribution amplitudes

    B. Pasquini,M. Pincetti,S. Boffi

    Physical Review D（2009）SCI 2区

    Univ Pavia

    Cited 27|Views13
    Abstract
    The nucleon distribution amplitudes and the nucleon-to-pion transition distribution amplitudes are investigated at leading twist within the frame of a light-cone quark model. The distribution amplitudes probe the three-quark component of the nucleon light-cone wave function, while higher order components in the Fock-space expansion of the nucleon state are essential to describe the nucleon-to-pion transition distribution amplitudes. Adopting a meson-cloud model of the nucleon the nucleon-to-pion transition distribution amplitudes are calculated for the first time.
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    nucleon,transition distribution amplitudes,fock space,elementary particles,light cone,quark model,higher order
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    【要点】：本文通过领先扭矩框架下的轻锥夸克模型，研究了核子分布振幅和核子至π介子过渡分布振幅，首次在核子云模型中计算了核子至π介子过渡分布振幅，揭示了核子三夸克组分的轻锥波函数。
    

    【方法】：采用轻锥夸克模型，分析了核子的分布振幅和核子至π介子的过渡分布振幅，重点考察了Fock空间展开的高阶分量对核子至π介子过渡分布振幅描述的重要性。
    

    【实验】：文中未提及具体实验，但通过核子云模型计算了核子至π介子过渡分布振幅，数据集名称未在文中给出。
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