@article{b8a7a78e3edb44c5bc0c984a574ecfae,

title = "Events with large missing transverse energy at the cern collider: II. search for the decays of W± into heavy leptons and of Z0 into non-interacting particles",

abstract = "We report on further analysis of events with large missing transverse energy from 715 nb-1 of data from the UA1 experiment at the CERN proton-antiproton collider. Measured W and Z0 rates and heavy flavour cross sections are used to predict rates of missing transverse energy event from all known standard model process. Limits are derived on two possible new sources, namely: (1) semi-hadronic decays of a fourth sequential charged heavy lepton coupling to the W boson, (2) Z0 decays into additional pairs of non-interacting particles. After taking into additional pairs of non-interacting particles. After taking into account all known sources of missing transverse energy events, we find a mass limit on a fourth-generation charged lepton of mL>41 GeV/c2 (90{\%} CL) and a limit on the number of additional neutrino species of n≤7 (90{\%} CL).",

keywords = "cern collider, UA1 experiment",

author = "{UA1 Collaboration} and C. Albajar and Albrow, {M. G.} and Allkofer, {O. C.} and G. Arnison and A. Astbury and B. Aubert and T. Axon and C. Bacci and T. Bacon and N. Bains and Batley, {J. R.} and G. Bauer and S. Beingessner and J. Bellinger and A. Bettini and A. Bezaguet and K. Bos and E. Buckley and G. Bunce and G. Busetto and P. Catz and P. Cennini and S. Centro and F. Ceradini and Charlton, {D. G.} and G. Ciapetti and S. Cittolin and D. Clarke and D. Cline and C. Cochet and J. Colas and P. Colas and M. Corden and Coughlan, {J. A.} and G. Cox and D. Dau and M. Debeer and Debrion, {J. P.} and M. Degiorgi and {Della Negra}, M. and M. Demoulin and B. Denby and D. Denegri and A. Diciaccio and L. Dobrzynski and J. Dorenbosch and Dowell, {J. D.} and E. Duchovni and R. Edgecock and K. Eggert",

year = "1987",

month = "2",

day = "12",

doi = "10.1016/0370-2693(87)91562-0",

language = "English",

volume = "185",

pages = "241--248",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}