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Direct search for pair production of heavy stable charged particles in Z decays.

  • Author(s): Soderstrom, E
  • McKenna, JA
  • Abrams, GS
  • Adolphsen, CE
  • Averill, D
  • Ballam, J
  • Barish, BC
  • Barklow, T
  • Barnett, BA
  • Bartelt, J
  • Bethke, S
  • Blockus, D
  • Bonvicini, G
  • Boyarski, A
  • Brabson, B
  • Breakstone, A
  • Bulos, F
  • Burchat, PR
  • Burke, DL
  • Cence, RJ
  • Chapman, J
  • Chmeissani, M
  • Cords, D
  • Coupal, DP
  • Dauncey, P
  • DeStaebler, HC
  • Dorfan, DE
  • Dorfan, JM
  • Drewer, DC
  • Elia, R
  • Feldman, GJ
  • Fernandes, D
  • Field, RC
  • Ford, WT
  • Fordham, C
  • Frey, R
  • Fujino, D
  • Gan, KK
  • Gero, E
  • Gidal, G
  • Glanzman, T
  • Goldhaber, G
  • Gomez Cadenas JJ
  • Gratta, G
  • Grindhammer, G
  • Grosse-Wiesmann, P
  • Hanson, G
  • Harr, R
  • Harral, B
  • Harris, FA
  • Hawkes, CM
  • Hayes, K
  • Hearty, C
  • Heusch, CA
  • Hildreth, MD
  • Himel, T
  • Hinshaw, DA
  • Hong, SJ
  • Hutchinson, D
  • Hylen, J
  • Innes, WR
  • Jacobsen, RG
  • Jaros, JA
  • Jung, CK
  • et al.
Abstract

A search for pair production of stable charged particles from Z decay has been performed with the Mark II detector at the SLAC Linear Collider. Particle masses are determined from momentum, ionization energy loss, and time-of-flight measurements. A limit excluding pair production of stable fourth-generation charged leptons and stable mirror fermions with masses between the muon mass and 36.3 GeV/c2 is set at the 95% confidence level. Pair production of stable supersymmetric scalar leptons with masses between the muon mass and 32.6 GeV/c2 is also excluded. © 1990 The American Physical Society.

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