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Journal articleMatheson J, Robbins M, Watts S, et al., 1996,
A microscopic explanation for type inversion and the annealing behaviour of radiation damaged silicon detectors
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 371, Pages: 575-577, ISSN: 0168-9002- Author Web Link
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- Citations: 7
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Journal articleAlexander G, Allison J, Altekamp N, et al., 1996,
Search for charged Higgs bosons using the OPAL detector at LEP
, PHYSICS LETTERS B, Vol: 370, Pages: 174-184, ISSN: 0370-2693 -
Journal articleAlexander G, Allison J, Altekamp N, et al., 1996,
Observation of Y production in hadronic Z<sup>0</sup> decays
, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol: 370, Pages: 185-194, ISSN: 0370-2693Evidence for the production of Y mesons in hadronic Z0 decays is presented. Using a sample of 3.7 million hadronic events, eight Y candidates are identified from their decays into e+e- and μ+μ- pairs. The estimated background in the signal region is 1.6 ± 0.3 events. Based on existing theoretical models for inclusive Y production, the following branching ratio, summed over the three lightest Y states, is obtained: Br(Z0 → Y + X) = (1.0 ± 0.4 ± 0.1 ± 0.2) × 10-4, where the first error is statistical, the second systematic and the third error accounts for uncertainties in the production mechanism.
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Journal articleMaya MT, Pais JP, Araujo HM, et al., 1996,
Determination of apovincaminic acid in human plasma by high-performance liquid chromatography
, JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS, Vol: 14, Pages: 617-622, ISSN: 0731-7085 -
Journal articleDerrick M, Krakauer D, Magill S, et al., 1996,
Inclusive charged particle distributions in deep inelastic scattering events at HERA
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 70, Pages: 1-15, ISSN: 0170-9739- Author Web Link
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- Citations: 50
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ReportBlaser J-P, Cornelise J, Cruise AM, et al., 1996,
STEP (Satellite Test of the Equivalence Principle): Report on the Phase A Study
, STEP (Satellite Test of the Equivalence Principle): Report on the Phase A Study, Publisher: ESA, SCI(96)5 -
Journal articleAlexander G, Allison J, Altekamp N, et al., 1996,
Measurement of the τ<sup>-</sup> → e<sup>-</sup>v̄<inf>c</inf>vτ branching ratio
, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol: 369, Pages: 163-172, ISSN: 0370-2693The branching ratio of the τ- → e-v̄evτ decay mode has been measured with the OPAL detector to be (17.78 ± 0.10 ±0.09)% where the first error is statistical and the second is systematic. The branching ratio, together with other measurements, has been used to test e - μ and μ - τ universality in the charged current weak interaction.
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Journal articleBuskulic D, DeBonis I, Casper D, et al., 1996,
A precise measurement of the average b hadron lifetime
, PHYSICS LETTERS B, Vol: 369, Pages: 151-162, ISSN: 0370-2693- Author Web Link
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- Citations: 15
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Journal articleAndlinger M, Kluge A, Szoncso F, et al., 1996,
Pattern Comparator Trigger (PACT) for the muon system of the CMS experiment
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 370, Pages: 389-395, ISSN: 0168-9002- Author Web Link
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- Citations: 13
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Journal articleAlbajar C, Ankoviak K, Bartha S, et al., 1996,
Measurement of alpha(s) from b(b)over-bar production at the cern p(p)over-bar collider
, PHYSICS LETTERS B, Vol: 369, Pages: 46-54, ISSN: 0370-2693- Author Web Link
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- Citations: 16
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Journal articleDerrick M, Krakauer D, Magill S, et al., 1996,
Rapidity gaps between jets in photoproduction at HERA
, PHYSICS LETTERS B, Vol: 369, Pages: 55-68, ISSN: 0370-2693- Author Web Link
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- Citations: 78
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Journal articleAlexander G, Allison J, Altekamp N, et al., 1996,
Test of the exponential decay law at short decay times using tau leptons
, PHYSICS LETTERS B, Vol: 368, Pages: 244-250, ISSN: 0370-2693 -
Journal articleAbreu P, Adam W, Adye T, et al., 1996,
Search for promptly produced heavy quarkonium states in hadronic Z decays
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 69, Pages: 575-583, ISSN: 0170-9739- Author Web Link
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- Citations: 17
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Journal articleAlexander G, Allison J, Altekamp N, et al., 1996,
A comparison of b and uds quark jets to gluon jets
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 69, Pages: 543-560, ISSN: 0170-9739 -
Journal articleAdam W, Adye T, Agasi E, et al., 1996,
Measurement of inclusive pi(0) production in hadronic Z(0) decays
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 69, Pages: 561-573, ISSN: 0170-9739- Author Web Link
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- Citations: 25
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Journal articleBuskulic D, Casper D, DeBonis I, et al., 1996,
Measurement of D-s(+) meson production in Z decays and of the (B)over-bar(s)(0) lifetime
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 69, Pages: 585-595, ISSN: 0170-9739- Author Web Link
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- Citations: 21
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Journal articleChen J, Geppert R, Irsigler R, et al., 1996,
Beam tests of GaAs strip detectors
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 369, Pages: 62-68, ISSN: 0168-9002 -
Journal articleMillmore M, French M, Gill K, et al., 1996,
Beam test of a prototype readout system for precision hacking detectors at LHC
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 369, Pages: 79-91, ISSN: 0168-9002- Author Web Link
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- Citations: 4
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Journal articleAbreu P, Adam W, Adye T, et al., 1996,
A precise measurement of the tau lepton lifetime
, PHYSICS LETTERS B, Vol: 365, Pages: 448-460, ISSN: 0370-2693- Author Web Link
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- Citations: 22
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Journal articleBuskulic D, Casper D, DeBonis I, et al., 1996,
Measurement of the Lambda(b) polarization in Z decays
, PHYSICS LETTERS B, Vol: 365, Pages: 437-447, ISSN: 0370-2693- Author Web Link
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- Citations: 56
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Journal articleSidher SD, Sumner TJ, Quenby JJ, et al., 1996,
Soft x-ray observations of the Galactic halo and the interstellar medium
, ASTRONOMY & ASTROPHYSICS, Vol: 305, Pages: 308-315, ISSN: 0004-6361- Author Web Link
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- Citations: 20
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Journal articleAbreu P, Adam W, Adye T, et al., 1996,
Determination of
, Zeitschrift fur Physik C-Particles and Fields, Vol: 71, Pages: 539-553, ISSN: 0170-9739Semileptonic decays B → D*- ℓ+νX were selected from a sample of 3.1 million hadronic Z decays collected by the DELPHI detector at LEP. A topological search for semileptonic B decays to resonant and non-resonant D*- π+ states was performed and the ratio of the branching fractions: Br(B → D*- ℓ+νX)/Br(B → D*- ℓ+νX) + Br(B0 → D*- ℓ+ν) = 0.19 ± 0.10(stat) ± 0.06(syst) was determined. Taking into account this contribution, the differential decay width of B0 → D*- ℓ+ν was measured as a function of the momentum transfer from the B to the D*- in two separate analyses, using exclusive and inclusive methods of D*- ℓ+ reconstruction. The distributions were fitted over the full momentum transfer range to extract the product of |V cb| times the normalization of the decay form factor F(q max2): F(qmax2)|Vcb| = (35.4 ± 1.9(stat) ± 2.4(syst)) • 10-3. The value of |Vcb| was computed using theoretical calculations of F(q max2), giving: |Vcb| = (38.9 ± 2.0(stat) ± 2.6(syst) ± 1.7(theory)) • 10-3. The total branching fraction Br(B0 → D*- ℓ+ν) was determined to be: Br(B0 → D*- ℓ+ν) = (5.52 ± 0.17(stat) ± 0.68(syst))%.
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Journal articleAbreu P, Adam W, Adye T, et al., 1996,
Measurement of the partial decay width R<inf>b</inf><sup>0</sup> = Γ<inf>bb̄</inf>/Γ<inf>had</inf> of the Z with the DELPHI detector at LEP
, Zeitschrift fur Physik C-Particles and Fields, Vol: 70, Pages: 531-547, ISSN: 0170-9739The partial decay width of the Z to bb̄ quark pairs has been measured by the DELPHI detector at LEP. B-hadrons, containing b-quarks, were tagged by several methods using tracks with large impact parameters to the primary vertex complemented sometimes by event shape variables or using leptons with high transverse momentum relative to the hadron. In order to reduce the systematic uncertainties, in all methods the b-tagging efficiency has been extracted directly from the data. Combining all methods, the value: Γbb̄/Γhad = 0.2216 ± 0.0016(stat.) ± 0.0021(syst.) was found, where the cc̄ production fraction was fixed to its Standard Model value. © Springer-Verlag 1996.
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Journal articleBencze GL, Seez C, Aalste M, et al., 1996,
An accurate telescope for beam position monitoring and spatial resolution studies
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 368, Pages: 283-287, ISSN: 0168-9002- Author Web Link
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- Citations: 1
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Journal articleAkers R, Alexander G, Allison J, et al., 1996,
Measurement of the average b-baryon lifetime and the product branching ratio f(b → Λ<inf>b</inf>) · BR(Λ<inf>b</inf> → Λℓ<sup>-</sup>ν̄X)
, Zeitschrift fur Physik C-Particles and Fields, Vol: 69, Pages: 195-214, ISSN: 0170-9739The average lifetime of b-flavoured baryons measured with the OPAL detector is updated to include data collected between 1990 and 1994 at LEP. Bottom-flavoured baryons that decay semileptonically and produce a Λ baryon are identified through the correlation of the baryon number of the Λ and the electric charge of the lepton. To measure the lifetime, the decay point of the b baryon is estimated by the Λ-lepton vertex, and the observed distribution of decay lengths is fitted simultaneously in 874 right-sign and 384 wrong-sign combinations. In a separate method, the impact parameter distribution of the leptons is fitted in a subset of these data. When the two results are combined, taking correlations into account, the average b-baryon lifetime is found to be τ = 1.16 ± 0.11 (stat.) ± 0.06 (syst.) ps. Using the same data, the product branching ratio is measured to be f(b → Δb)·BR(Λb → Λℓ-ν̄X) = (2.91 ± 0.23 (stat.) ±0.25 (syst.))·10-3, where the symbol f(b → Λb) is the fraction of b quarks from Z0 decays forming b baryons, Λb represents all b-flavoured baryons and ℓ is either an electron or a muon. © Springer-Verlag 1996.
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Journal articleAdams MR, Aïd S, Anthony PL, et al., 1996,
Determination of the gluon distribution function of the nucleon using energy-energy angular pattern in deep-inelastic muon-deuteron scattering
, Zeitschrift fur Physik C-Particles and Fields, Vol: 71, Pages: 391-403, ISSN: 0170-9739We have used the energy-energy angular pattern of hadrons in inelastic muon-deuteron scattering to study perturbative QCD effects and to extract the gluon distribution function ηG(η) of the nucleon, where η is the fractional momentum carried by the gluon. The data were taken with the E665 spectrometer using the Fermilab Tevatron muon beam with a mean beam energy of 490 GeV. We present ηG(η) for 0.005 < η < 0.05 and at an average Q2 of 8 GeV2 using this new technique. We find that ηG(η) in this region can be described by ηG(η) ∝ ηλ with λ = -0.87±0.09(stat.)±0.370.32(sys.). We compare our results to expectations from various parametrizations of the parton distribution function and also to results from HERA. © Springer-Verlag 1996.
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Journal articleSpooner NJC, Smith PF, Arnison GTJ, et al., 1996,
New dark matter limits from the Boulby NaI detectors
, Nuclear Physics B - Proceedings Supplements, Vol: 19, Pages: 64-66, ISSN: 0920-5632Using pulse shape analysis of data from 173 operating days of our 6.2 kg NaI detector in the energy range 7-10 keV we present new limits on weakly interacting massive particles that may constitute the dark matter. An improvement of a factor >30 has been obtained over Ge for spin-dependent dark matter interactions while limits for coherent interactions are comparable to Ge for masses > 100 GeV.
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Journal articleAbreu P, Adam W, Adye T, et al., 1996,
A measurement of the photon structure function F-2(gamma) at an average Q(2) of 12 GeV2/c(4)
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 69, Pages: 223-233, ISSN: 0170-9739- Author Web Link
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- Citations: 58
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Journal articleAkers R, Alexander G, Allison J, et al., 1996,
Measurement of the average b-baryon lifetime and the product branching ratio f(b->Lambda(b))center dot BR(Lambda(b)->Lambda l(-)nu)over-bar-X)
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 69, Pages: 195-214, ISSN: 0170-9739 -
Journal articleAlbajar C, Andlinger M, Arefiev A, et al., 1996,
Measurement of hadronic shower punchthrough in magnetic field
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 69, Pages: 415-425, ISSN: 0170-9739- Author Web Link
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- Citations: 2
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