Photoproduction of the Lambda*(1520) hyperon off protons and neutrons in deuterium.

摘要

The photoproduction of the Λ*(1520) off both protons and neutrons in deuterium has been studied using the CLAS eg3 run data. The reactions are gamma d → K+Λ*(n) and gammad → K0Λ*(p). Λ*(1520) cross sections and decay angle distributions are extracted in the photon energy region 1.75 GeV Egamma 5.50 GeV. This is the first time that exclusive photoproduction of Λ*(1520) on neutrons has been reported. Moreover our results on protons extend to higher energies than the previous studies.