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Article
Open AccessA study of the b-quark fragmentation function with the DELPHI detector at LEP I and an averaged distribution obtained at the Z Pole
The nature of b-quark jet hadronisation has been investigated using data taken at the Z peak by the DELPHI detector at LEP. Two complementary methods are used to reconstruct the energy of weakly decaying b-had...
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Article
Open AccessSearch for single top quark production via contact interactions at LEP2
Single top quark production via four-fermion contact interactions associated to flavour-changing neutral currents was searched for in data taken by the DELPHI detector at LEP2. The data were accumulated at cen...
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Article
Open AccessStudy of the dependence of direct soft photon production on the jet characteristics in hadronic Z 0 decays
An analysis of the direct soft photon production rate as a function of the parent jet characteristics is presented, based on hadronic events collected by the DELPHI experiment at LEP1. The dependences of the p...
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Article
Open AccessMeasurements of CP-conserving trilinear gauge boson couplings WWV (V≡γ,Z) in e+e− collisions at LEP2
The data taken by Delphi at centre-of-mass energies between 189 and 209 GeV are used to place limits on the CP-conserving trilinear gauge boson couplings ...
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Article
Open AccessCorrelations between polarisation states of W particles in the reaction e − e +→W − W + at LEP2 energies 189–209 GeV
In a study of the reaction e − e +→W − W + with the DELPHI detector,...
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Article
Open AccessA study of \({\mathrm{b}}\bar{\mathrm{b}}\) production in e+e− collisions at \(\sqrt{s}=130\) –207 GeV
Measurements are presented of R b, the ratio of the \({\mathrm{b}}\bar{\mathrm{b}}\) cross-section to the ...
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Article
Open AccessSearch for one large extra dimension with the DELPHI detector at LEP
Single photons detected by the DELPHI experiment at LEP2 in the years 1997–2000 are reanalysed to investigate the existence of a single extra dimension in a modified ADD scenario with slightly warped large ext...
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Article
Open AccessDi-jet production in γ γ collisions at LEP2
The production of two high-p T jets in the interactions of quasi-real photons in e + e ...
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Article
Open AccessObservation of the muon inner bremsstrahlung at LEP1
Muon bremsstrahlung photons converted in front of the DELPHI main tracker (TPC) in dimuon events at LEP1 were studied in two photon kinematic ranges: 0.2<E γ ...
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Article
Higgs boson searches in CP-conserving and CP-violating MSSM scenarios with the DELPHI detector
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Article
Open AccessStudy of b-quark mass effects in multijet topologies with the DELPHI detector at LEP
The effect of the heavy b-quark mass on the two, three and four-jet rates is studied using LEP data collected by the DELPHI experiment at the Z peak in 1994 and 1995. The rates of b-quark jets and light quark...
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Article
Extensive γ -ray spectroscopy of normally and superdeformed structures in 61 29Cu32
A largely extended experimental knowledge of the 61 29Cu32 nucleus has been obtained from three experiments. Excited states in 61Cu were produced via the fusion-evaporation reaction 28Si(36Ar, 3p)
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Article
Evidence for an isomeric 3/2- state in 53Co
The fragmentation of a 550MeV/u primary beam of 58Ni on a 9Be target has been used to measure time- and energy-correlated γ decays following the implantation of event-by-event discriminated secondary fragments in...
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Article
Measurement of the mass and width of the W boson in e+e- collisions at \(\sqrt{s}\) = 161–209 GeV
A measurement of the W boson mass and width has been performed by the DELPHI collaboration using the data collected during the full LEP2 programme (1996–2000). The data sample has an integrated luminosity of 6...
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Article
Open AccessStudy of W-boson polarisations and triple gauge boson couplings in the reaction e+e-→W+W- at LEP 2
A determination of the single W spin density matrix (SDM) elements in the reaction e+e-→W+W-→lνqq̄(l=e/μ) is reported at centre-of-mass energies between 189 and 209 GeV. The data sample used corresponds to an int...
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Article
Open AccessHiggs boson searches in CP-conserving and CP-violating MSSM scenarios with the DELPHI detector
This paper presents the final interpretation of the results from DELPHI on the searches for Higgs bosons in the minimal supersymmetric extension of the Standard Model (MSSM). A few representative scenarios are...
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Article
Isomeric decay studies around 204Pt and 148Tb
Relativistic energy projectile fragmentation of 208Pb has been used to produce a range of exotic nuclei. The nuclei of interest were studied by detecting delayed gamma rays following the decay of isomeric stat...
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Article
Exciting isomers from the first stopped-beam RISING campaign
First results are reported from a major new initiative of experiments, which focus on nuclear structure studies at extreme isospin values by means of isomer spectroscopy. The experiments represent the first pa...
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Article
Zγ* production in e+e- interactions at \(\sqrt{s} = 183-209\,\text{GeV}\)
Measurements of Zγ* production are presented using data collected by the DELPHI detector at centre-of-mass energies ranging from 183 to 209 GeV, corresponding to an integrated luminosity of about 667 pb-1. The me...
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Article
Study of triple-gauge-boson couplings ZZZ, ZZγ and Zγγ at LEP
Neutral triple-gauge-boson couplings ZZZ, ZZγ and Zγγ have been studied with the DELPHI detector using data at energies between 183 and 208 GeV. Limits are derived on these couplings from an analysis of the re...
