Rare Decay Studies with NA48/1, CLEO-c, and MECO

本提案请求支持继续研究NA48/1 （CERN）的高强度k -短/中性超子数据，参与CLEO-c （CESR）计划，并开始参与MECO （BNL）实验。NA48/1是一个寻找罕见的k -短和中性超子衰变的项目，单事件灵敏度约为3 × 10-10。它的主要目标包括测量K0S到p0e(m)+e(m)-和级联超子半轻子和弱辐射衰变。CLEO-c预计将在Psi共振、质量中心能量为4140 MeV（高于dsd阈值）和J/Psi下收集数据，产生150万dsd对、3000万DD对和10亿J/Psi的样本。这些数据将为罕见的D衰变搜索提供典型的灵敏度，比粒子数据组值好2-3个数量级。PI打算研究改变口味的d介子的中性电流衰减和Lc的弱辐射衰减。CLEO-c于2003年夏天正式启动，研究人员将与软件协调人员一起进行特殊支持任务。MECO打算通过新设计的探测器和创新的方法来产生高纯度、动量和电荷选择的μ子束，将μ子与电子转换的分支比限制在10-16。MECO的目标是在这个十年的后半期收集数据，PI可能会与威廉玛丽学院的同事合作建立宇宙介子否决系统。PI将继续努力招募代表性不足的人群进入数学科学领域，他将继续努力为所有年级的科学和数学教学法制定教师培训计划。

This proposal requests support to continue research on the high intensity K-short/neutral-hyperon data of NA48/1 (CERN), to participate in the CLEO-c (CESR) program, and to commence involvement with the MECO (BNL) experiment. NA48/1 is a search for rare K-short and neutral hyperon decays with a single-event sensitivity of about 3 x10-10. Its primary objectives include measurements of K0S to p0e(m)+e(m)- and cascade hyperon semi-leptonic and weak radiative decays. CLEO-c expects to collect data at the Psi'' resonance, at a center-of-mass energy of 4140 MeV (above the DsDs threshold) and at the J/Psi , yielding samples of 1.5 million DsDs pairs, 30 million DD pairs, and one billion J/Psi. These data will provide a typical sensitivity, for rare D decay searches, of 2-3 orders of magnitude better than Particle Data Group values. The PI intends to investigate flavor-changing neutral-current decays of the D-meson and weak radiative decays of the Lc. CLEO-c formally commenced in Summer 2003 and the investigator will work with the software coordinator on special support tasks. MECO intends to set a limit of 10-16 on the branching ratio for muon to electron conversion with a newly designed detector and innovative method for producing a high purity, momentum- and charge-selected muon beam. MECO aims to take data during the second half of this decade, and the PI would likely collaborate with colleagues at the College of William & Mary on the construction of the cosmic muon veto system.The PI will continue his efforts to recruit underrepresented populations into the mathematical sciences and he will join an ongoing effort to develop teacher training programs for science and mathematics pedagogy at all grade-school levels.