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Journal articleALBRECHT H, EHRLICHMANN H, HAMACHER T, et al., 1991,
OBSERVATIONS OF LAMBDA-C+ SEMILEPTONIC DECAY
, PHYSICS LETTERS B, Vol: 269, Pages: 234-242, ISSN: 0370-2693- Author Web Link
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- Citations: 32
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Journal articleABREU P, ADAM W, ADAMI F, et al., 1991,
THE REACTION E+E--] GAMMA-GAMMA(GAMMA) AT Z0 ENERGIES
, PHYSICS LETTERS B, Vol: 268, Pages: 296-304, ISSN: 0370-2693- Author Web Link
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- Citations: 30
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Journal articleAbreu P, Adam W, Adami F, et al., 1991,
The reaction e+e- → γγ(γ) at Z0 energies
, Physics Letters B, Vol: 268, Pages: 296-304, ISSN: 0370-2693The total and differential cross-sections for the reaction e<sup>+</sup>e<sup>-</sup> → γγ(γ) are measured at centre of mass energies around 91 GeV using an integrated luminosity of 4.7 pb<sup>-1</sup>. The aggreement with QED prediction is good. Consequently there is no evidence for non-standard channels which would have the same experimental signature. The lower limits on the QED cuttoff parameters are Λ<inf>+</inf> > 113 GeV and Λ<inf>-</inf> > 95 GeV. An upper limit on the effective coupling between a possible excited electron and the gamma is derived. At 95% confidence level the branching ratios for Z<sup>0</sup> decay into π<sup>0</sup>γ, ηψ and γγγ are below 1.5 × 10<sup>-4</sup>, 2.8 × 10<sup>-4</sup> and 1.4 × 10<sup>-4</sup> respectively. © 1991.
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Journal articleBARLOW R, BARRING O, CARTWRIGHT S, et al., 1991,
REPORT OF THE HEAVY FLAVORS WORKING GROUP
, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, Vol: 17, Pages: 1605-1623, ISSN: 0954-3899- Author Web Link
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- Citations: 4
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Journal articleALBRECHT H, 1991,
A SPIN-PARITY ANALYSIS OF GAMMA-GAMMA-]RHO+RHO-
, PHYSICS LETTERS B, Vol: 267, Pages: 535-540, ISSN: 0370-2693- Cite
- Citations: 27
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Journal articleAbreu P, Adam W, Adami F, et al., 1991,
A MEASUREMENT OF THE LIFETIME OF THE TAU-LEPTON
, PHYSICS LETTERS B, Vol: 267, Pages: 422-430, ISSN: 0370-2693- Author Web Link
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- Citations: 19
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Journal articleALBRECHT H, 1991,
SEARCH FOR B-]SX+X- IN EXCLUSIVE DECAYS OF B-MESONS
, PHYSICS LETTERS B, Vol: 262, Pages: 148-154, ISSN: 0370-2693- Cite
- Citations: 8
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Journal articleApsimon RJ, Atkinson M, Baake M, et al., 1991,
Separation of minimum and higher twist in photoproduction of high-PT mesons
, Zeitschrift Fur Physik C Particles and Fields, Vol: 50, Pages: 179-184, ISSN: 0170-9739Photo- and hadroproduction data in the beam energy range 65-175 GeV have been studied with a view to isolating higher-twist processes in photoproduction from other point-like and hadron-like contributions. With selection of charged tracks having p<inf>T</inf>>2 GeV/c and 0.28<x<inf>F</inf><0.84 indications of a higher twist contribution have been found at a level that is consistent with QCD expectations. © 1991 Springer-Verlag.
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Journal articleAbreu P, Adam W, Adami F, et al., 1991,
A STUDY OF THE REACTION E+E--]MU+MU- AROUND THE Z0 POLE
, PHYSICS LETTERS B, Vol: 260, Pages: 240-248, ISSN: 0370-2693- Author Web Link
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- Citations: 6
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Journal articleALBRECHT H, 1991,
OBSERVATION OF THE DECAY TAU-]RHO-PI-PI-NU-TAU
, PHYSICS LETTERS B, Vol: 260, Pages: 259-264, ISSN: 0370-2693- Cite
- Citations: 20
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Journal articleBACCI C, BEZAGUET A, BLOESS D, et al., 1991,
PERFORMANCE OF A SEMI-OCTAGONAL-SHAPED URANIUM TETRAMETHYLPENTANE CALORIMETER
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 301, Pages: 445-450, ISSN: 0168-9002- Author Web Link
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- Citations: 3
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Journal articleALBAJAR C, ALBROW MG, ALLKOFER OC, et al., 1991,
J/PSI AND PSI' PRODUCTION AT THE CERN P-BARP COLLIDER
, PHYSICS LETTERS B, Vol: 256, Pages: 112-120, ISSN: 0370-2693- Author Web Link
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- Citations: 65
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Journal articleALBAJAR C, ALBROW MG, ALLKOFER OC, et al., 1991,
BEAUTY PRODUCTION AT THE CERN PP-BAR COLLIDER
, PHYSICS LETTERS B, Vol: 256, Pages: 121-128, ISSN: 0370-2693- Author Web Link
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- Citations: 120
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Journal articleALBRECHT H, 1991,
OBSERVATION OF THE DECAYS DS--]PHI-E-NU-BAR AND D--]K-STAR0E-NU-BAR
, PHYSICS LETTERS B, Vol: 255, Pages: 634-638, ISSN: 0370-2693- Cite
- Citations: 33
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Journal articleAbreu P, Adam W, Adami F, et al., 1991,
EXPERIMENTAL-STUDY OF THE TRIPLE-GLUON VERTEX
, PHYSICS LETTERS B, Vol: 255, Pages: 466-476, ISSN: 0370-2693- Author Web Link
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- Citations: 48
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Journal articleALBRECHT H, 1991,
RECONSTRUCTION OF SEMILEPTONIC B-]U DECAYS
, PHYSICS LETTERS B, Vol: 255, Pages: 297-304, ISSN: 0370-2693- Cite
- Citations: 81
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Journal articleLABARGA L, ADOLPHSEN C, GRATTA G, et al., 1991,
THE MARK-II SILICON STRIP VERTEX DETECTOR AND PERFORMANCE OF A SILICON DETECTOR TELESCOPE IN THE MARK-II DETECTOR AT THE SLC
, IEEE TRANSACTIONS ON NUCLEAR SCIENCE, Vol: 38, Pages: 25-29, ISSN: 0018-9499- Author Web Link
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- Citations: 1
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Journal articleALBRECHT H, 1991,
SEARCH FOR B-]S GLUON IN B-MESON DECAYS
, PHYSICS LETTERS B, Vol: 254, Pages: 288-292, ISSN: 0370-2693- Cite
- Citations: 46
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Journal articleLEADER E, 1991,
ARE GLUONS THE WHOLE STORY
, PHYSICS LETTERS B, Vol: 253, Pages: 457-458, ISSN: 0370-2693- Author Web Link
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- Citations: 6
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Journal articleAlbrecht H, Ehrlichmann H, Gläser R, et al., 1991,
Observation of spin-parity 2+ dominance in the reaction γγ→ρ0ρ0 near threshold
, Zeitschrift Fur Physik C Particles and Fields, Vol: 50, Pages: 1-10, ISSN: 0170-9739The reaction γγ→π<sup>+</sup>π<sup>-</sup>π<sup>+</sup>π<sup>-</sup> has been studied with the ARGUS detector. The rate in the invariant mass region below 1.8 GeV/c<sup>2</sup> is found to be largely due to ρ<sup>0</sup>ρ<sup>0</sup> production. A spin-parity analysis shows a dominance of the partial wave (J<sup>P</sup>, J<inf>z</inf>)=(2<sup>+</sup>, 2) with a small admixture from J<sup>P</sup>=0<sup>+</sup>. The contribution of negative parity states is consistent with zero. The large ratio of cross sections σ(γγ→ρ<sup>0</sup>ρ<sup>0</sup>)/σ(γγ→ρ<sup>+</sup>ρ<sup>-</sup>)≃4, and the dominance of the J<sup>P</sup>=2<sup>+</sup> wave in the reaction γγ→ρ<sup>0</sup>ρ<sup>0</sup> is a signature consistent with the production of an exotic (I=2) resonance. © 1991 Springer-Verlag.
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Journal articleALBRECHT H, EHRLICHMANN H, HAMACHER T, et al., 1991,
INCLUSIVE PRODUCTION OF D(0), D+ AND D-STAR(2010)+ MESONS IN B-DECAYS AND NONRESONANT E+E- ANNIHILATION AT 10.6 GEV
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 52, Pages: 353-360, ISSN: 0170-9739- Cite
- Citations: 81
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Conference paperLIEU R, BICKERT K, HARRIS AW, et al., 1991,
ROSAT WIDE-FIELD CAMERA MINI-SURVEY OF THE DIFFUSE SKY BACKGROUND IN 90-188 EV SOFT X-RAYS
, 22ND INTERNATIONAL COSMIC RAY CONF, Publisher: DUBLIN INST ADVANCED STUDIES, Pages: A1-A4 -
Journal articleRoe S, Sumner TJ, Rochester GK, et al., 1991,
Temperature-dependence of the behavior of silicon drift detectors
, Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment, Vol: 310, Pages: 192-196, ISSN: 0168-9002 -
Conference paperMatthews L, Quenby JJ, Sumner TJ, et al., 1991,
A ROSAT EUV survey of coronal activity in nearby stars and cosmic ray injection into the ISM
, 22nd International Cosmic Ray Conference, Pages: 459-462 -
Conference paperSumner TJ, Lieu R, Quenby JJ, et al., 1991,
Studies of the diffuse sky background in 90-188eV soft x-rays using the ROSAT Wide Field Camera
, Hot Gas in the Galaxy, Publisher: RAL, Pages: 19-27 -
Conference paperSumner TJ, Roe S, Rochester GK, et al., 1991,
Low temperature operation of silicon drift detectors
, EUV, X-ray, and Gamma-Ray Instrumentation II, Pages: 265-273 -
Conference paperSumner TJ, Bewick A, Zammit CC, et al., 1991,
The UK underground dark matter program at Boulby
, 22nd International Cosmic Ray Conference, Pages: 722-725 -
Conference paperBarstow MA, Abbey AF, Cole RE, et al., 1991,
Early results from the ROSAT wide field camera
, White dwarfs, Publisher: Kluwer, Pages: 99-108 -
Conference paperSUMNER TJ, BEWICK A, ZAMMIT CC, et al., 1991,
THE UK UNDERGROUND DARK MATTER PROGRAM AT BOULBY
, 22ND INTERNATIONAL COSMIC RAY CONF, Publisher: DUBLIN INST ADVANCED STUDIES, Pages: D722-D725 -
Conference paperLieu R, Quenby JJ, Sumner TJ, et al., 1991,
ROSAT EUV survey of the diffuse Galactic background
, 22nd International Cosmic Ray Conference, Pages: 1-4
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