Very Rare Neutral K-Long Meson Decays (Physics)

非常罕见的中性 K 长介子衰变（物理学）

• 批准号: 8818444
• 负责人: Stanley Wojcicki
• 金额: $ 232.26万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-15 至 1992-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818444&HistoricalAwards=false
• 关键词: Very; Rare; Neutral; Long; Meson

This proposal seeks support for continuation of Brookhaven National Laboratory experiment 791, a search for very rare decays of the neutral K meson. This experiment has had an engineering run and one physics run. Another physics run is anticipated this winter. Wojcicki was the spokesman for two years and remains in a leadership role. The experiment searches for K zero-long decaying into muon and electron (forbidden by lepton number conservation) and into muon and muon (suppressed by the standard model). The latter mode will be studied with good statistics; the former is a probe to mass scales much higher than can be achieved in direct reactions with current accelerators. An additional mode to be studied is into neutral pion, electron and positron. This is a CP violating decay; it is possible that direct CP violation may dominate in this decay.

该提案寻求支持布鲁克海文国家实验室 791 号实验的继续，该实验旨在寻找中性 K 介子的非常罕见的衰变。 该实验进行了工程运行和物理运行。 预计今年冬天将举行另一场物理比赛。 沃西基担任发言人两年，目前仍担任领导职务。 该实验寻找μ子和电子（被轻子数守恒所禁止）以及μ子和μ子（被标准模型抑制）的K零长衰变。 后一种模式将通过良好的统计进行研究；前者是对质量尺度的探测，其质量尺度远高于当前加速器直接反应所能达到的质量尺度。 另一种需要研究的模式是中性π介子、电子和正电子。 这是 CP 破坏衰变；直接 CP 破坏可能在这种衰变中占主导地位。