Search for the lepton-flavor-number violating decay kaon long decays to neutral pion muon antimuon electron positron in the full E799II kaons at the TeVatron data set

[摘要] Experiments E799 Phase-II (E79911) and E832 of the Kaons at the TeVatron (KTeV) project at the Fermi National Accelerator Laboratory (Fermilab) were designed to study rare and CP-violating kaon decays. The experiments ran first during 1996 and 1997, and then again during 1999. This study focused on the E799II search for the lepton-flavor-violating decay mode KL → pi 0mu+/-e∓, and on its accompanying background decays, in the full set of 1996--7 and 1999 KTeV data. For the combined data sets, we calculated a new 90% confidence level branching ratio limit BR(KL → pi 0mu+/-e∓) < 3.37 x 10-10.

[发布机构] Rice University

[效力级别] Elementary particles