Observation of possible production and decay of short-living heavy neutral particles in the SKAT neutrino experiment |
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| Authors: | DS Baranov GG Volkov SS Gershtein AA Ivanilov VI Konyushko VM Korabliev VA Korotkov EP Kuznetsov VV Makeev YuP Nikitin SN Parshikura AYu Polyarush YuG Rjabov YuI Smirnov AA Sokolov VA Yarba |
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| Institution: | Institute for High Energy Physics, P.O. 142284 Protvino, Serpukhov, Moscow Region, USSR |
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| Abstract: | In the SKAT bubble chamber neutrino experiment production of a short-living neutral particle with mass (1.4?m?2.5) GeV/c2 and lifetime τ≈6×10?12 s has been detected. The event may be interpreted as production and decay of the heavy lepton M0→μ?+e++νe with mass (1.4?mM0?2.1) GeV/c2. It might also be the production of a charmed particle D0→e++τ?+νe (D0→e++π?+νe) with mass 1.4?mD0?2.5) GeV/c2 in a non-diagonal neutral current. The probability to interpret the event as other possible processes is very low. |
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