Search for heavy quasistable leptons |
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| Authors: | Yu.B. Bushnin A.F. Dunaytzev S.V. Golovkin V.P. Kubarovsky L.G. Landsberg V.M. Leontyev T.I. Petrunina V.A. Senko A.M. Zaytzev |
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| Affiliation: | Institute for High Energy Physics, Serpukhov, USSR |
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| Abstract: | Negative results of a search for heavy quasistable charged leptons at the IHEP accelerator are reported. For the selection of heavy leptons a system of scintillation and gas ?erenkov counters was used. The upper limit estimations of the differential cross sections for heavy lepton production in pN collisions at Ep = 70 GeV are, for example, d2σ/dpω (p = 30 GeV/c, θ = 2 mrad, 1 ? Mλ ? 4.8 GeV) = 4.10?38 cm2/sr · GeV. The results of the present work, together with the data on muon pair production in nucleon-nucleon interactions, show that there are no heavy charged leptons with masses from 0.55 GeV (τλ > 7 · 10?10 sec) up to 4.5 GeV (τλ > 3 · 10?8 sec). |
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