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Department of Physics, Queen's University, Kingston, Ontario, Canada K7L 3N6.
Phys Rev Lett. 2004 Mar 12;92(10):102004. doi: 10.1103/PhysRevLett.92.102004. Epub 2004 Mar 10.
Data from the Sudbury Neutrino Observatory have been used to constrain the lifetime for nucleon decay to "invisible" modes, such as n-->3nu. The analysis was based on a search for gamma rays from the deexcitation of the residual nucleus that would result from the disappearance of either a proton or neutron from 16O. A limit of tau(inv)>2 x 10(29) yr is obtained at 90% confidence for either neutron- or proton-decay modes. This is about an order of magnitude more stringent than previous constraints on invisible proton-decay modes and 400 times more stringent than similar neutron modes.
萨德伯里中微子观测站的数据已被用于限制核子衰变到“不可见”模式的寿命，例如n→3ν。该分析基于对16O中质子或中子消失后剩余核退激产生的伽马射线的搜索。在90%置信度下，对于中子或质子衰变模式，得到τ（inv）>2×10（29）年的限制。这比之前对不可见质子衰变模式的限制严格约一个数量级，比类似的中子模式严格400倍。
