Search Results - "Nijjhar, B."
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Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP
Published in Physics reports (2013)“…Electroweak measurements performed with data taken at the electron–positron collider LEP at CERN from 1995 to 2000 are reported. The combined data set…”
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2
Precision electroweak measurements on the Z resonance
Published in Physics reports (2006)“…We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron–positron colliders…”
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3
The OPAL muon barrel detector
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-04-1995)“…The barrel part of the OPAL muon detector consists of 110 drift chambers forming four layers outside the hadron absorber. Each chamber covers an area of 1.2 m…”
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4
Production of fermion-pair events in e +e − collisions at 161 GeV centre-of-mass energy
Published in Physics letters. B (1997)“…Cross-sections for hadronic and leptonic two-fermion events, and leptonic forward-backward asymmetries, have been measured in e +e − collisions at a…”
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5
Test of QCD analytic predictions for the multiplicity ratio between gluon and quark jets
Published in Physics letters. B (21-11-1996)“…Gluon jets with about 39 GeV energy are identified in hadronic Z 0 decays by tagging two jets in the same hemisphere of an event as quark jets. Identifying the…”
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6
Topological search for the production of neutralinos and scalar particles
Published in Physics letters. B (13-06-1996)“…A search for scalar particles and neutralinos such as those predicted by supersymmetric models has been performed using a data sample of 4.4 million hadronic Z…”
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7
Improved measurement of the lifetime of the τ lepton
Published in Physics letters. B (09-05-1996)“…A new measurement of the τ lifetime is presented. It uses data collected with the Opal detector during 1994, which almost doubles the size of the Opal τ…”
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8
Measurement of cross-sections and asymmetries in e +e − collisions at 130–140 GeV centre-of-mass energy
Published in Physics letters. B (23-05-1996)“…Production of events with multihadronic and leptonic final states has been measured in e +e − collisions at centre-of-mass energies significantly above the Z 0…”
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9
Test of the four-fermion contact interaction in e+e− collisions at 130–140 GeV
Published in Physics letters. B (17-10-1996)“…The differential cross-sections for e +e − → e +e −, e +e − → μ + μ − and e +e − → τ + τ −, and the total cross-section for e +e − → qq̄ at centre-of-mass…”
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10
Search for charged Higgs bosons using the OPAL detector at LEP
Published in Physics letters. B (07-03-1996)“…A search is described to detect charged Higgs bosons via the process Z 0 → H +H −, using data collected by the OPAL detector at LEP which correspond to an…”
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11
Measurements with photonic events in e +e − collisions at centre-of-mass energies of 130–140 GeV
Published in Physics letters. B (06-06-1996)“…Cross-sections and angular distributions for the production of events with single and multiple photons are measured from data recorded with the OPAL detector…”
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12
Search for scalar top and scalar bottom quarks using the OPAL detector at LEP
Published in Physics letters. B (05-12-1996)“…The scalar top quark can be the lightest charged supersymmetric particle and it can be lighter than the top quark itself in supersymmetric extensions of the…”
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13
Test of the exponential decay law at short decay times using tau leptons
Published in Physics letters. B (01-02-1996)“…Quantum mechanics predicts an exponential distribution for the decay time of massive particles. However, deviations are expected for decay times shorter than…”
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14
A study of four-fermion final states with high multiplicity at LEP
Published in Physics letters. B (30-05-1996)“…A search for ℓ +ℓ − q q (ℓ = e, μ) four-fermion final states in high multiplicity events has been performed at s ≈m Z and above the Z peak at s =130 GeV and s…”
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15
Search for charged scalar leptons using the OPAL detector at [formula omitted] GeV
Published in Physics letters. B (01-03-1997)“…A search for pair-produced scalar electron, muon and tau leptons has been performed using a data sample corresponding to an integrated luminosity of 10.1 pb −1…”
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16
Photonic events with large missing energy in e +e − collisions at [formula omitted]
Published in Physics letters. B (1997)“…Photonic events with large missing energy have been observed with the OPAL detector at LEP using two search topologies. The first topology looks for events…”
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17
Search for unstable neutral and charged heavy leptons in e +e − collisions at [formula omitted]
Published in Physics letters. B (1997)“…Searches for unstable neutral and charged heavy leptons (L 0, L ±) have been performed using a data sample of 10.0 pb −1 at a centre-of-mass energy of s =161.3…”
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18
Search for excited leptons in e +e − collisions at [formula omitted]
Published in Physics letters. B (1997)“…We have searched for excited states of charged and neutral leptons, e ∗, μ ∗ , τ ∗ and ν ∗ , in e +e − collisions at s =161 GeV using the OPAL detector at LEP…”
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Measurement of the longitudinal, transverse and asymmetry fragmentation functions at LEP
Published in Zeitschrift für Physik C Particles and Fields (01-06-1995)Get full text
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20
A first measurement of the Λ[formula omitted] and ΛΛ ([formula omitted][formula omitted]) spin compositions in hadronic Z0 decays
Published in Physics letters. B (19-09-1996)“…The spin composition of ΛΛ, ΛΛ and ΛΛ pairs at low invariant mass values has been measured for the first time in multihadronic Z0 decays with the OPAL detector…”
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