Search for Lepton-Flavor Violation in the Decay (tau)(sup -) (yields) (ell)(sup (-+)) h(sup (+-))h(sup -).

Technical Information Center Oak Ridge Tennessee

关键词: Leptons;    Hadrons;    Decay;    Storage rings;   

RP-ID  :  DE2004833047

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A search for the lepton-flavor-violating decay of the tau into one charged lepton and two charged hadrons has been performed using 221.4 fb(sup -1) of data collected at an e(sup +)e(sup -) center-of-mass energy around 10.58 GeV with the BABAR detector at the PEP-II storage ring. In all 14 decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (0.7-4.8) x 10(sup -7) at 90% confidence level. All results are preliminary.