Search for associated production of massive states decaying into two photons in e+ee^{+} e^{-} annihilations at s\sqrt{s} = 88-GeV to 209-GeV

Collaboration
Jul, 2002
17 pages
Published in:
  • Phys.Lett.B 544 (2002) 44-56
e-Print:
Report number:
  • CERN-EP-2002-045
Experiments:

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Abstract:
A search is performed for production of short-lived particles in e+e- -> XY, with X -> gamma gamma and Y -> ffbar, for scalar X and scalar or vector Y. Model-independent limits in the range of 25-60 femtobarns are presented on sigma (e+e- -> XY) x B(X -> ffbar) for centre-of-mass energies in the range 205-207 GeV. The data from all LEP centre-of-mass energies 88-209 GeV are also interpreted in the context of fermiophobic Higgs boson models, for which a lower mass limit of 105.5 GeV is obtained for a benchmark fermiophobic Higgs boson.
Note:
  • 17 pages, 4 figures Report-no: CERN-EP-2002-045
  • electron positron: colliding beams
  • electron positron: annihilation
  • new particle: search for
  • postulated particle: associated production
  • postulated particle: decay
  • photon: pair production
  • fermion: pair production
  • channel cross section: branching ratio
  • Z0: electroproduction
  • Higgs particle: associated production