Dynamical Nucleon-Pion System via Basis Light-Front Quantization Approach

  

  報告題目: Dynamical Nucleon-Pion System via Basis Light-Front Quantization Approach

  報告人:Mr. Weijie Du

  Graduate student, Iowa State University

  時間:2019年6月19日(星期三)10:00

  地點:近代物理所5號樓1006會議室

  報告摘要 

  We present the first application of the Basis Light-Front Quantization method to a simple chiral model of the nucleon-pion system as a relativistic bound state for the physical proton. The light-front mass-squared matrix of the nucleon-pion system is obtained within a truncated basis. The mass and the corresponding light-front wave function (LFWF) of the proton are computed by numerical diagonalization of the resulting mass-squared matrix. With the boost invariant LFWF, we evaluate the proton’s parton distribution function and Dirac form factor. An improved model is implemented to calculate the proton’s Dirac form factor. The resulting proton’s Dirac form factor agrees well with the experimental data below the squared transverse momentum transfer of 0.20 GeV2.  

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