Showing papers by "Sandor Czellar published in 1990"

TL;DR: In this paper, the DELPHI detector at the e+e− storage ring LEP at the center of mass energies around 91.5 GeV was used to measure the production rates for 2-, 3-, 4, and 5-jet hadronic final states.

TL;DR: In this paper, the correlations in rapidity in hadron production from e + e − annihilation near the Z 0 resonance were studied by means of the method of factorial moments, using data taken with the DELPHI detector at LEP.

TL;DR: A measurement of the cross section for e+e- → hadrons using 11 000 hadronic decays of the Z boson at ten different center-of-mass energies is presented in this article.

TL;DR: In this article, a search for the neutral Higgs boson in Z0-decays has been performed using the DELPHI detector at the large Electron Positron collider (LEP) at CERN.

TL;DR: In this paper, the authors search for the production of sleptons and gauginos in the two-prong decays of Z0, but no candidate remains after straightforward selections.

TL;DR: In this paper, the energy-energy angular correlations in hadronic final states from Z 0 decay using the DELPHI detector at LEP were studied and compared with Monte Carlo calculations based on the exact second order QCD matrix element and string fragmentation.

TL;DR: In this paper, the pair production of the lightest scalar Higgs boson, h, and a pseudoscalar h, A, was searched for in a data sample containing 10 000 hadronic Z0 decays.

TL;DR: In this article, the authors search for the production of charged scalars, primarily charged Higgs particles, decaying into c sc s, τν + jets, and τντν.

TL;DR: In this paper, the authors measured the cross section ratios R l = σ l (e + e − →l + l − ) σ h ( e + e−→l+l−) for l=e, μ and τ using data taken from a scan around the Z0.12.

TL;DR: In this paper, a search was made for pairs of scalar quarks (squarks) produced in e+e− annihilations at LEP and decaying into a standard quark and a neutral, non-interacting, stable, massive particle (the lightest supersymmetric particle, LSP).

TL;DR: In this paper, the authors derived the production rate of cc events from the analysis of charged pions coming from the decay of charmed meson D*+-→D0π+ and D*-→ D0π- where the π± is constrained by kinematics to have a low pT with respect to the jet axis, and the probability to procedure these cc events was taken to be 0.31±0.05 as measured at √S = 10.55 GeV.

TL;DR: In this article, a search for the third generation up type quark t and a possible fourth down quark b' in hadronic Z0 decays observed in DELPHI at the LEP collider is presented.