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Searches for the neutral Higgs bosons h 0 and A 0 are used to obtain limits on the Type II Two Higgs Doublet Model (2HDM(II)) with no CP–violation in the Higgs sector and no additional particles besides the five Higgs bosons. The analysis combines approximately 170 pb −1 of data collected with the OPAL detector at √ s ≈ 189 GeV with previous runs at √ s ≈ m(More)
Keywords: Digital forensics Triage template pipelines Cost-effective prioritisation Investigative process Digital crimes a b s t r a c t This paper addresses the increasing resources overload being experienced by law enforcement digital forensics units with the proposal to introduce triage template pipelines into the investigative process, enabling devices(More)
Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 × 10 6 hadronic Z 0 decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near(More)
The process e + e ? ! e + e ? Z== is studied with the OPAL detector at LEP at a centre of mass energy of p s = 189 GeV. The cross-section times the branching ratio of the Z== decaying into hadrons is measured within Lorentz invariant kinematic limits to be (1:2 0:30:1) pb for invariant masses of the hadronic system between 5 GeV and 60 GeV and (0:7 0:20:1)(More)
The production of charged hadrons and K 0 S mesons in the collisions of quasi-real photons has been measured using the OPAL detector at LEP. The data were taken at e + e − centre-of-mass energies of 161 and 172 GeV. The differential cross-sections as a function of the transverse momentum and the pseudorapidity of the charged hadrons and K 0 S mesons have(More)
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