Rare Kaon decay from E949 at BNL:: K+ → π+v(v)over-bar

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作者
Chen, SM [1 ]
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[1] TRIUMF, Vancouver, BC V6T 2A3, Canada
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O412 [相对论、场论]; O572.2 [粒子物理学];
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摘要
In the first year of physics run, the E949 experiment at Brookhaven National Laboratory has already collected 1.8 x 10(12) kaons stopping in the target. Additional evidence for the rare charged kaon decay K+ -> pi+nu nu has been observed. Combined with previous results from the E787 experiment, the branching ratio is measured to be Br(K+ -> pi(+)nu nu) -(1.47(-0.89)(+1.30)) X 10(-10).
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页码:825 / 828
页数:4
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