An upper limit on the τ neutrino mass from three- and five-prong tau decays
A bound on the tau neutrino mass is established using the data collected from 1991 to 1995 at s√≃mZ with the ALEPH detector. Two separate limits are derived by fitting the distribution of visible energy vs invariant mass in τ−→2π−π+ντ and τ−→3π−2π+(π0)ντ decays. The two results are combined to obtai...
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| Main Authors: | , |
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
1998
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| Online Access: | https://ink.library.smu.edu.sg/sis_research/5825 https://ink.library.smu.edu.sg/context/sis_research/article/6828/viewcontent/ppe_97_138.pdf |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | A bound on the tau neutrino mass is established using the data collected from 1991 to 1995 at s√≃mZ with the ALEPH detector. Two separate limits are derived by fitting the distribution of visible energy vs invariant mass in τ−→2π−π+ντ and τ−→3π−2π+(π0)ντ decays. The two results are combined to obtain a 95% confidence level upper limit of 18.2 MeV/c2 on the mass of the tau neutrino. |
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