Citations per year

200320082013201820220246810
Abstract:
We discuss the mechanisms that lead to Λ(1405)\Lambda(1405) production in the πpK0πΣ\pi^-p\to K^0\pi\Sigma reaction. The problem has gained renewed interest after different works converge to the conclusion that there are two resonances around the region of 1400 MeV, rather than one, and that they couple differently to the πΣ\pi\Sigma and KˉN\bar{K}N channels. We look at the dynamics of that reaction and find two mechanisms which eventually filter each one of the resonances, leading to very different shapes of the πΣ\pi\Sigma invariant mass distributions. The combination of the two mechanisms leads to a shape of this distribution compatible with the experimental measurements.
  • 12.39.Fe
  • 14.20.Jn
  • 13.75.-n
  • pi- p: inelastic scattering
  • Lambda(1405): hadroproduction
  • effective Lagrangian: chiral
  • unitarity
  • Feynman graph: higher-order
  • amplitude analysis
  • factorization