Experimental physics

The European Physical Journal C - Particles and Fields

, Volume 17, Issue 2, pp 187-205

First online:

Searches for neutral Higgs bosons in \({\mathrm e}^+{\mathrm e}^-\) collisions around \(\sqrt{s}\) = 189 GeV

  • The DELPHI Collaboration
  • , P. Abreu et al.Affiliated withLIP, IST, FCUL - Av. Elias Garcia, 14-1°, 1000 Lisboa Codex, Portugal

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Searches for neutral Higgs bosons in the Standard Model and the MSSM have been performed using data collected by the DELPHI experiment at a centre-of-mass energy of 188.7 GeV, corresponding to an integrated luminosity of 158 pb\(^{-1}\). These analyses are used, in combination with our results from lower energies, to set new 95% confidence level lower mass bounds on the Standard Model Higgs boson (94.6 GeV/\(c^2\)) and on the lightest neutral scalar (82.6 GeV/\(c^2\)) and neutral pseudoscalar (84.1 GeV/\(c^2\)) Higgs bosons in a representative scan of the MSSM parameters. The results are also interpreted in the framework of a general two-Higgs doublet model.