Baryonic resonances close to the Kbar-N threshold: the case of   Lambda(1405) in pp collisions
  We present an analysis of the Lambda(1405) resonance produced in the reaction p+p->Sigma^{pm}+pi^{mp}+K+p at 3.5 GeV kinetic beam energy measured with HADES at GSI. The two charged decay channels Lambda(1405) -> Sigma^{\pm}+pi^{\mp} have been reconstructed for the first time in p+p collisions. The efficiency and acceptance-corrected spectral shapes show a peak position clearly below 1400 MeV/c^2. We find a total production cross section of sigma_{Lambda(1405)}=9.2 +- 0.9 +- 0.7 +3.3-1.0 mub. The analysis of its polar angle distribution suggests that the Lambda(1405) is produced isotropically in the p-p center of mass system. 
G. Agakishiev, A. Balanda, D. Belver, A.V. Belyaev, J. C. Berger-Chen,   A. Blanco, M. B\"ohmer, J.L. Boyard, P. Cabanelas, ...
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