Evidence for formation of a narrow pKshort resonance with mass near 1533 MeV in neutrino interactions

A.E.Asratyan; A.G.Dolgolenko; M.A. Kubantsev

Evidence for formation of a narrow pKshort resonance with mass near 1533 MeV in neutrino interactions

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arxiv hep-ex/0309042 v3 pith:TVCTETHJ submitted 2003-09-11 hep-ex

A.E.Asratyan , A.G.Dolgolenko , M.A. Kubantsev This is my paper · ORCID

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keywords massneutrinoresonanceobservedbaryonnarrownearpkshort

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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 than 20 MeV, and is compatible with being entirely due to experimental resolution. The statistical significance of the signal is near 6.7 standard deviations. As the position of the observed resonance does not match the mass of any known \Sigma^{*+} state, we believe that it arises from neutrino production of the \Theta^+ pentaquark baryon. The analysis is based on the data obtained in past neutrino experiments with big bubble chambers: WA21, WA25, WA59, E180 and E632.

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Pentaquarks and Maxim V. Polyakov
hep-ph 2024-11 conditional novelty 3.0 of 10

A review argues that Diakonov-Petrov-Polyakov's narrow-width Theta+ pentaquark prediction remains viable, identifying N*(1685) as the antidecuplet partner and citing LEPS/DIANA data as support.

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