• Corpus ID: 118357999

Photoproduction of $\Lambda(1405)$ with the two-pole structure

  title={Photoproduction of \$\Lambda(1405)\$ with the two-pole structure},
  author={Seung-il Nam and Hyun-Kyu Jo},
  journal={arXiv: High Energy Physics - Phenomenology},
  • S. Nam, Hyun-Kyu Jo
  • Published 2 March 2015
  • Physics
  • arXiv: High Energy Physics - Phenomenology
We investigate the $\Lambda(1405,1/2^-)\equiv\Lambda^*$ photoproduction off the proton target, i.e. $\gamma p\to K^+\Lambda^*$, considering explicitly its two-pole structure, the higher ($\Lambda^*_H:\,1430\,\mathrm{MeV}$) and lower ($\Lambda^*_L:\,1390\,\mathrm{MeV}$) mass-pole contributions, suggested by the chiral-unitary model (ChUM) approaches. For this purpose, we construct a two-body process model, which mimics the Dalitz process, $\gamma p\to K^+\pi\Sigma$, assuming that the mass of… 

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