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Conference paperSpooner NJC, Sumner TJ, Bewick A, et al., 1990,
Development of a Dark Matter Experiment in the UK
, 21st International Cosmic Ray Conference, Pages: 264-267 -
Journal articleANSELMINO M, CARUSO F, LEADER E, et al., 1990,
DIQUARK CONTRIBUTIONS TO THE NUCLEON DEEP INELASTIC STRUCTURE FUNCTIONS
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 48, Pages: 689-692, ISSN: 0170-9739- Author Web Link
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- Citations: 10
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Journal articleDECAMP D, 1990,
MEASUREMENT OF ELECTROWEAK PARAMETERS FROM Z-DECAYS INTO FERMION PAIRS
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 48, Pages: 365-391, ISSN: 0170-9739- Author Web Link
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- Citations: 44
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Journal articleHARRIS AW, WALKER HJ, SUMNER TJ, 1990,
THE POTENTIAL OF THE WIDE FIELD CAMERA ON ROSAT FOR INVESTIGATIONS OF THE XUV BACKGROUND
, IAU SYMPOSIA, Pages: 463-464, ISSN: 0074-1809 -
Journal articleABRAMS GS, ADOLPHSEN CE, AVERILL D, et al., 1989,
MEASUREMENT OF Z DECAYS INTO LEPTON PAIRS
, PHYSICAL REVIEW LETTERS, Vol: 63, Pages: 2780-2783, ISSN: 0031-9007- Author Web Link
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- Citations: 15
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Journal articleAlbrecht H, Gläser R, Harder G, et al., 1989,
Measurement of the lifetime ratio τ(B=) τ(B0)
, Physics Letters B, Vol: 232, Pages: 554-560, ISSN: 0370-2693Using the ARGUS detector at the e<sup>+</sup>e<sup>-</sup> storage ring DORIS II the ratio of semileptonic branching ratios of B<sup>+</sup> and B<sup>0</sup> mesons has been determined by comparing the yields of D<sup>0</sup>, D<sup>-</sup>, and D<sup>*</sup>(2010)<sup>-</sup> mesons in semileptonic B decays. We derive the lifetime ratio τ(B<sup>+</sup>) τ(B<sup>0</sup>)=1.00∓0.23±0.14. © 1989.
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Journal articleAlbrecht H, Gläser R, Harder G, et al., 1989,
Resonance decomposition of the D*(2420)0 through a decay angular analysis
, Physics Letters B, Vol: 232, Pages: 398-404, ISSN: 0370-2693Using data collected with the ARGUS detector, we have performed a decay angular analysis of the enhancement, previously known as the D<sup>*</sup> (2420), seen in the final state D<sup>*</sup>(2010)<sup>+</sup>π<sup>-</sup>. We thereby exhibit that the observed broad structure is actually due to two relatively narrow resonances, one of which is identified as the D<sup>*</sup>(2459)<sup>0</sup>, while the massof the other is measured to be (2414±2±5) MeV/c<sup>2</sup>. The results of the analysis are in good agreement with the interpretation of the two states as L=1 D mesons of spin-parities 2<sup>+</sup> and 1<sup>+</sup> respectively. © 1989.
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Journal articleABRAMS GS, ADOLPHSEN CE, AVERILL D, et al., 1989,
SEARCHES FOR NEW QUARKS AND LEPTONS PRODUCED IN Z-BOSON DECAY
, PHYSICAL REVIEW LETTERS, Vol: 63, Pages: 2447-2451, ISSN: 0031-9007- Author Web Link
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- Citations: 32
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Journal articleDECAMP D, DESCHIZEAUX B, LEES JP, et al., 1989,
DETERMINATION OF THE NUMBER OF LIGHT NEUTRINO SPECIES
, PHYSICS LETTERS B, Vol: 231, Pages: 519-529, ISSN: 0370-2693- Author Web Link
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- Citations: 257
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Journal articleABRAMS GS, ADOLPHSEN CE, AVERILL D, et al., 1989,
MEASUREMENTS OF Z-BOSON RESONANCE PARAMETERS IN E+E- ANNIHILATION
, PHYSICAL REVIEW LETTERS, Vol: 63, Pages: 2173-2176, ISSN: 0031-9007- Author Web Link
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- Citations: 157
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Conference paperBROOKS CB, BULLOCK FW, CASHMORE RJ, et al., 1989,
DEVELOPMENT OF THE ZEUS CENTRAL TRACKING DETECTOR
, 5TH INTERNATIONAL WIRE CHAMBER CONF, Publisher: ELSEVIER SCIENCE BV, Pages: 477-483, ISSN: 0168-9002- Author Web Link
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- Citations: 34
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Journal articleAlbrecht H, Gläser R, Harder G, et al., 1989,
Observation of the charged isospin partner of the D*(2459)0
, Physics Letters B, Vol: 231, Pages: 208-212, ISSN: 0370-2693Using the ARGUS detector at the DORIS II e<sup>+</sup>e<sup>-</sup> storage ring at DESY, we have observed a new charmed meson of mass (2469±4±6) MeV/c<sup>2</sup>, decaying to D<sup>0</sup>π<sup>+</sup>. This state is a strong candidate for the charged isospin partner of the D<sup>*</sup>(2459)<sup>0</sup> . The isospin mass splitting is measured to be (14±5±8) MeV/c<sup>2</sup>. © 1989.
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Journal articleAlbrecht H, Gläser R, Harder G, et al., 1989,
Observation of a new charmed-strange meson
, Physics Letters B, Vol: 230, Pages: 162-168, ISSN: 0370-2693Using the ARGUS detector at the DORIS II e<sup>+</sup>e<sup>-</sup> storage ring at DESY, we have obtained evidence for a new charmed-strange meson which decays into D<sup>*+</sup>K<sup>0</sup>. Its mass is observed to be 2535.9±0.6±2.0 MeV/c<sup>2</sup> and its width to be less than 4.6 MeV/c<sup>2</sup> at the 90% confidence level. No structure is observed at this mass in the D<sup>+</sup>K<sup>0</sup> invariant mass spectrum, which suggests that an unnatural spin-parity is preferred. © 1989.
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Journal articleAlbrecht H, Gläser R, Harder G, et al., 1989,
Observation of Δ(1232)++ production in e+e- annihilations around 10 GeV
, Physics Letters B, Vol: 230, Pages: 169-174, ISSN: 0370-2693We report on the first observation of Δ(1232)<sup>++</sup> and Δ(1232)<sup>++</sup> baryons in e<sup>+</sup>e<sup>-</sup> annihilation at energies around 10 GeV, using the ARGUS detector at DORIS II. The sum of the rates of Δ<sup>++</sup> and Δ<sup>++</sup> per hadronic event in the continuum is measured to be 0.040±0.008±0.006, and the rate in direct {A figure is presented}(1S) decays is 0.124±0.016±0.015. The momentum spectrum of Δ<sup>++</sup> baryons in direct {A figure is presented}(1S) decays has been measured. © 1989.
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Journal articleAlbrecht H, Gläser R, Harder G, et al., 1989,
Search for b→sγ in exclusive decays of B mesons
, Physics Letters B, Vol: 229, Pages: 304-308, ISSN: 0370-2693Using the ARGUS detector at the e<sup>+</sup>e<sup>-</sup> storage ring DORIS II at DESY, a search for decays B→K<sup>*</sup>γ has been performed where K<sup>*</sup> represents seven different K mesons. No evidence for such decays has been found, and upper limits are quoted. These provide valuable constraints on the top quark mass, the Higgs sector of the standard model, and a variety of extensions thereto. © 1989.
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Journal articleABRAMS GS, ADOLPHSEN CE, ALEKSAN R, et al., 1989,
1ST MEASUREMENTS OF HADRONIC DECAYS OF THE Z-BOSON
, PHYSICAL REVIEW LETTERS, Vol: 63, Pages: 1558-1561, ISSN: 0031-9007- Author Web Link
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- Citations: 34
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Journal articleAlbrecht H, Gläser R, Harder G, et al., 1989,
Measurement of the decay B0→D-ℓ+ν
, Physics Letters B, Vol: 229, Pages: 175-180, ISSN: 0370-2693Using the ARGUS detector at the e<sup>+</sup>e<sup>-</sup> storage ring DORIS II, we have investigated the decay B<sup>0</sup>→D<sup>-</sup>ℓ<sup>+</sup>ν, where ℓ<sup>+</sup> is e<sup>+</sup> or μ<sup>+</sup>. The B<sup>0</sup> mesons were produced in 150 000 Υ{hooked}(4S) decays. Assuming electron-muon universality we obtain a branching ratio BR(B<sup>0</sup>→D<sup>-</sup>e<sup>+</sup>ν)=BR(B<sup>0</sup> →D<sup>-</sup>μ<sup>+</sup>ν)=(1.8±0.6±0.5)%. © 1989.
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Journal articleABRAMS G, ADOLPHSEN CE, AKERLOF C, et al., 1989,
THE MARK-II DETECTOR FOR THE SLC
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 281, Pages: 55-80, ISSN: 0168-9002- Author Web Link
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- Citations: 35
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Journal articleABRAMS GS, ADOLPHSEN CE, ALEKSAN R, et al., 1989,
INITIAL MEASUREMENTS OF Z-BOSON RESONANCE PARAMETERS IN E+E- ANNIHILATION
, PHYSICAL REVIEW LETTERS, Vol: 63, Pages: 724-727, ISSN: 0031-9007- Author Web Link
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- Citations: 118
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Journal articleALBAJAR C, ALBROW MG, ALLKOFER OC, et al., 1989,
BOSE EINSTEIN CORRELATIONS IN PBARP INTERACTIONS AT SQUARE-ROOT S=0.2 TO 0.9 TEV
, PHYSICS LETTERS B, Vol: 226, Pages: 410-416, ISSN: 0370-2693- Author Web Link
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- Citations: 70
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Journal articleBARBER GJ, BELK AT, BEUSELINCK R, et al., 1989,
PERFORMANCE OF THE 3-DIMENSIONAL READOUT OF THE ALEPH INNER TRACKING CHAMBER
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 279, Pages: 212-216, ISSN: 0168-9002- Author Web Link
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- Citations: 4
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Journal articleANKOVIAK K, BAUER G, BUCHANAN C, et al., 1989,
CONSTRUCTION AND PERFORMANCE OF A POSITION DETECTOR FOR THE UA1 URANIUM-TMP CALORIMETER
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 279, Pages: 83-90, ISSN: 0168-9002- Author Web Link
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- Citations: 9
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Journal articleDAS I, SAMPATHKUMARAN EV, 1989,
COMPETITION BETWEEN MAGNETISM AND HEAVY FERMION BEHAVIOR IN CE1-XLAXCU3GA2
, JOURNAL OF PHYSICS-CONDENSED MATTER, Vol: 1, Pages: 3873-3877, ISSN: 0953-8984- Author Web Link
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- Citations: 2
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Journal articleSUMNER TJ, QUENBY JJ, LIEU R, et al., 1989,
SUSCEPTIBILITY OF SOFT-X-RAY GRAZING-INCIDENCE TELESCOPES TO LOW-ENERGY ELECTRONS
, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 238, Pages: 1047-1054, ISSN: 0035-8711- Author Web Link
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- Citations: 3
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Journal articleAlbrecht H, Böckmann P, Gläser R, et al., 1989,
Observation of the D*0(2459) IN e+e- annihilation
, Physics Letters B, Vol: 221, Pages: 422-426, ISSN: 0370-2693Using the ARGUS detector at the DORIS II storage ring at DESY, we have observed a charmed meson of mass (2455±3±5) MeV/c2, decaying to D<sup>+</sup>π<sup>-</sup>. The natural width of this state is determined to be (15<sup>+13+5</sup><inf>-10-10</inf>) MeV c<sup>2</sup>. The fragmentation function is hard, as expected for a leading charmed particle from nonresonant e<sup>+</sup>e<sup>-</sup> annihilation. Analysis of the decay angular distribution supports the hypothesis that the observed state is an L=1 excited charmed meson with spin-parity 2<sup>+</sup>. © 1989.
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Journal articleSMITH NJT, PERRETT JC, POMERANTZ MA, et al., 1989,
AN EXPERIMENT TO SEARCH FOR ULTRA HIGH-ENERGY GAMMA-RAY SOURCES FROM THE SOUTH-POLE
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 276, Pages: 622-627, ISSN: 0168-9002- Author Web Link
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- Citations: 17
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Journal articleGolutvin AI, Danilov MV, Zaȝtsev YM, 1989,
B-Meson oscillations
, Soviet Physics Uspekhi, Vol: 32, Pages: 189-199, ISSN: 0038-5670 -
Journal articleAlbrecht H, Böckmann P, Gläser R, et al., 1989,
Measurement of D*+ polarization in the decay B ̄0 → D*+ℓ-ν
, Physics Letters B, Vol: 219, Pages: 121-126, ISSN: 0370-2693Using the ARGUS detector at the e<sup>+</sup>e<sup>-</sup> storage ring DORIS II, we have measured the average polarization of D<sup>*+</sup> mesons originating from exclusive decays B ̄<sup>0</sup> → D<sup>*+</sup>ℓ<sup>-</sup>ν. By comparing the D<sup>*+</sup> decay angular distribution to a functional form 1 + α cos<sup>2</sup>≡, we determine α to be α=0.7±0.9. This value of α leads to a ratio of longitudinal to transverse decay with Γ<inf>l</inf>/Γ<inf>T</inf>=0.85±0.45, which allows the determination, |V<inf>cb</inf>|=0.052±0.011. The importance of the transverse helicity component is manifested in the q<sup>2</sup> and lepton spectra,which are also presented. © 1989.
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Journal articleAlbrecht H, Binder U, Böckmann P, et al., 1989,
Argus: A universal detector at DORIS II
, Nuclear Inst and Methods in Physics Research A, Vol: 275, Pages: 1-48, ISSN: 0168-9002The detector ARGUS has been designed as a universal tool to investigate final states from e<sup>+</sup>e<sup>-</sup> annihilation processes in the energy range of the Υ{hooked} resonances. ARGUS started operation in October 1982 and has since successfully taken data at the Υ{hooked}(1S), Υ{hooked}(2S) and Υ{hooked}(4S) energies, and in the nearby continuum. The detector combines excellent charged particle identification and good photon energy resolution over more than 90% of the full solid angle. A particle originating from the interaction vertex and leaving the beam tube traverses the following components: the vertex drift chamber, the main drift chamber which determines its momentum and specific ionization, the time-of-flight system through which its velocity is determined, and the electromagnetic calorimeter. Muons pass through the magnet coils and the flux return yoke and finally hit the muon chamber system which surrounds the detector. The momentum resolution of ARGUS is σ (p<inf>T</inf>) P<inf>T</inf> = (0.01<sup>2</sup> + (0.009p<inf>T</inf>[GeV/c])<sup>2</sup>)<sup> 1 2</sup>, the photon energy resolution in the barrel shower counters is σ (E) E = ( 0.072<sup>2</sup>+0.065<sup>2</sup> E[GeV])<sup> 1 2</sup>. Combining the information from all p devices, more than 80% of all charged hadrons can be recognized unambiguously. The electron-hadron and muon-hadron rejection rates are 1:200 and 1:50 respectively. © 1989.
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Journal articleUBERTINI P, BAZZANO A, SOOD R, et al., 1989,
HARD X-RAY-SPECTRUM OF SUPERNOVA 1987A ON DAY 407
, ASTROPHYS J, Vol: 337, Pages: L19-L22, ISSN: 0004-637X
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