1986•University of North Texas Digital Library (University of North Texas)Open access

Limit on tau neutrino mass

S. Abachi, C. Akerlof, P. Baringer, I. Beltrami, D. Blockus, G. Bonvicini, B. Brabson, Ben Bylsma, J. D. Chapman, Bruce Cork

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Abstract

Using the complete data sample of 300 pb/sup -1/ collected by the HRS spectrometer in e/sup +/e/sup -/ collisions at 29 GeV, mass limit for the tau neutrino is set. The end point of the hadronic mass spectrum is determined in the decays tau ..-->.. 5..pi../sup + -/nu/sub tau/ and tau ..-->.. 5..pi../sup + -/..pi../sup 0/nu/sub tau/. At 95% confidence level, an upper limit of M/sub nu/sub tau// < 76 MeV/c/sup 2/, is found. 8 refs., 4 figs.

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Key concepts: Physics, Hadron, Neutrino, Nuclear physics, Particle physics, Particle decay, Elementary particle