Skip to main content
eScholarship
Open Access Publications from the University of California

Limits on new-lepton pairs (L-,L0) with arbitrary neutrino mass

  • Author(s): Stoker, DP
  • Perl, ML
  • Abrams, G
  • Baden, AR
  • Barklow, T
  • Barnett, BA
  • Boyarski, AM
  • Boyer, J
  • Burchat, PR
  • Butler, F
  • Dorfan, JM
  • Feldman, GJ
  • Gidal, G
  • Hanson, G
  • Harral, BD
  • Hayes, K
  • Herrup, D
  • Hylen, JE
  • Innes, WR
  • Jaros, JA
  • Kadyk, JA
  • Karlen, D
  • Klein, SR
  • Lankford, AJ
  • Leclaire, BW
  • Levi, M
  • Lüth, V
  • Matthews, JAJ
  • Ong, RA
  • Riles, K
  • Rowson, PC
  • Wood, DR
  • et al.
Abstract

We have searched 205 pb-1 of s =29 GeV data from the Mark II detector at the SLAC e+e- storage ring PEP for events which may signify the existence of a new lepton pair (L-,L0) where the L0 may be massive, but does not exceed the L- mass. Three event signatures for L+L- decay are examined: (i) e, (ii) (e or)(+4), and (iii) (e or )(3+0). The numbers of signature events are found to be in good agreement with Monte Carlo simulations of known background sources. The ranges of L- and L0 masses for which new lepton pairs are excluded are obtained using a likelihood-ratio method to compare the number of observed signature events to the expected background, and to the expected background plus Monte Carlo predictions of (L-,L0) signals. © 1989 The American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View