Sources of tetramuon production by neutrinos

Abstract We evaluate four sources of tetramuon production by neutrinos: (a) heavy quark cascade, (b) heavy lepton cascade, (c) charm production with radiative pair, (d) charm production plus an associated charm pair. Rates relative to ν → μ − of order (a) 10 −6 , (b) 10 −5 , (c) 10 −7 , (d) 10 −9 , can be obtained. Invariant mass and azimuthal correlation distributions in 4μ events are presented. Relative multimuon rates differ strikingly in the models considered.