New Limits on Tau Neutrino Mass from CLEO II
نویسنده
چکیده
I report on two studies of tau neutrino mass recently carried out using data collected with the CLEO II detector at the CESR ee collider. First I present the results of an analysis of 473 decays of the type ! 5 and ! 3 2 , from which a 95% CL upper limit on m of 30 MeV is obtained. Results are also presented from a preliminary analysis of the decay ! 3 , using a sample of 29; 000 reconstructed events. In addition, I report on a study of hadronic structure in ! 2 , and discuss the implications for neutrino mass analyses based on the 3 decay channel. Prospects for improved constraints on m in the near future are examined.
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تاریخ انتشار 1999