par Abreu, Pedro;Bertrand, Daniel ; [et al.]
Référence Physics letters. Section B, 475, 3-4, page (429-447)
Publication Publié, 2000
Référence Physics letters. Section B, 475, 3-4, page (429-447)
Publication Publié, 2000
Article révisé par les pairs
Résumé : | Production of ∑- and Λ(1520) in hadronic Z decays has been measured using the DELPHI detector at LEP. The ∑- is directly reconstructed as a charged track in the DELPHI microvertex detector and is identified by its ∑→nπ decay leading to a kink between the ∑- and π-track. The reconstruction of the Λ(1520) resonance relies strongly on the particle identification capabilities of the barrel Ring Imaging Cherenkov detector and on the ionisation loss measurement of the TPC. Inclusive production spectra are measured for both particles. The production rates are measured to be |