Evidence for formation of a narrow pKshort resonance with mass near 1533 MeV in neutrino interactions
Abstract
A narrow baryon resonance is observed in invariant mass of the pKshort system formed in neutrino and antineutrino collisions with nuclei. The mass of the resonance is estimated as (1533+-5)MeV. The observed width is less 20 MeV and is compatible with being entirely due to experimental resolution. The statistical significance of the signal is near 6.7 stndard deviations. The analysis is based on the data obtaind in past neutrino experiments with big bubble chambers: WA21, WA25, WA59, E180 and E632.Keywords
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