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PRIMORDIAL NUCLEOSYNTHESIS, ADDITIONAL NEUTRINOS AND NEUTRAL CURRENTS FROM THE SUPERSTRING

PHYSICS LETTERS B 167:4 (1986) 457-463

Authors:

J ELLIS, K ENQVIST, DV NANOPOULOS, S SARKAR
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Bounds on light gluinos from the BEBC beam dump experiment

Physics Letters B 160:1-3 (1985) 212-216

Authors:

AM Cooper-Sarkar, MA Parker, S Sarkar, M Aderholz, P Bostock, EF Clayton, ML Faccini-Turluer, H Grässler, J Guy, PO Hulth, K Hultqvist, U Idschok, H Klein, H Kreutzmann, J Krstic, MM Mobayyen, DRO Morrison, B Nellen, P Schmid, N Schmitz, M Talebzadeh, W Venus, D Vignaud, C Walck, H Wachsmuth, B Wünsch

Abstract:

Observational upper limits on anomalous neutral-current events in a proton beam dump experiment are used to constrain the possible hadroproduction and decay of light gluinos. These results require ifmg̃ $ ̌4 GeV for ifmq̃ - minw. © 1985.
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Search for heavy neutrino decays in the BEBC beam dump experiment

Physics Letters B 160:1-3 (1985) 207-211

Authors:

AM Cooper-Sarkar, SJ Haywood, MA Parker, S Sarkar, KWJ Barnham, P Bostock, ML Faccini-Turluer, H Grässler, J Guy, PO Hulth, K Hultqvist, U Idschok, H Klein, H Kreutzmann, J Krstic, MM Mobayyen, DRO Morrison, B Nellen, M Talebzadeh, W Venus, D Vignaud, H Wachsmuth, W Wittek, B Wünsch

Abstract:

New limits on lepton mixing parameters are derived from a search for decays of heavy neutrinos in a proton beam dump experiment. The limits |Uøi|2, |Uei|2 < 10-6-10-7 are obtained for neutrino mass eigenstates vi of mass between 0.5 and 1.75 GeV, which can be produced through mixing in charmed D meson decays. This is the first such limit on |Uøi|2 for neutrino masses greater than 0.5 GeV. For the mass eigenstate v3 in particular, we obtain the limits |Uø3|2 < 10-7-10-8, |Ue3|2 < 10-9-10-10 for the mass range 150-190 MeV, assuming the v3 to be produced directly in charmed F meson decays. © 1985.
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PARTICLE PHYSICS AND THE STANDARD COSMOLOGY

ICTP Workshop in High-energy Physics and Cosmology (including Conference on Grand Unified Theories) Trieste, Italy, June 11-July 19, 1985 (1985)

THE COSMOLOGY OF DECAYING GRAVITINOS

NUCLEAR PHYSICS B 259:1 (1985) 175-188

Authors:

J ELLIS, DV NANOPOULOS, S SARKAR
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