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Journal articleSOOD RK, THOMAS JA, WALDRON L, et al., 1988,
HIGH-ENERGY GAMMA-RAY OBSERVATIONS OF SN-1987A
, PROCEEDINGS ASTRONOMICAL SOCIETY OF AUSTRALIA, Vol: 7, Pages: 486-489, ISSN: 0066-9997 -
Journal articleBRAUNSCHWEIG W, GERHARDS R, KIRSCHFINK FJ, et al., 1988,
A SEARCH FOR PARTICLES WITH MAGNETIC CHARGE PRODUCED IN E+E- ANNIHILATIONS AT SQUARE-ROOT-S=35 GEV
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 38, Pages: 543-550, ISSN: 0170-9739- Author Web Link
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- Citations: 14
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Conference paperUbertini P, Bazzano A, la Padula C, et al., 1988,
Hard X-ray Observation of the Supernova 1987A
, Supernova 1987A in the Large Magellanic Cloud, Publisher: Cambridge University Press, Pages: 429-433 -
Journal articleLEADER E, ANSELMINO M, 1988,
A CRISIS IN THE PARTON MODEL - WHERE, OH WHERE IS THE PROTONS SPIN
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 41, Pages: 239-246, ISSN: 0170-9739- Author Web Link
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- Citations: 62
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Journal articleBRAUNSCHWEIG W, GERHARDS R, KIRSCHFINK FJ, et al., 1988,
A STUDY OF BHABHA SCATTERING AT PETRA ENERGIES
, ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, Vol: 37, Pages: 171-177, ISSN: 0170-9739- Author Web Link
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- Citations: 28
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Conference paperBazzano A, Ubertini P, la Padula C, et al., 1988,
Hard x-ray behaviour of the SN1987A
, Frontier Objects in Astrophysics and Particle Physics, Pages: 145-152 -
Conference paperSood RK, Thomas J, Waldron L, et al., 1988,
Search for High Energy Gamma-Ray Emission from SN1987A
, Supernova 1987A in the Large Magellanic Cloud, Publisher: Cambridge University Press, Pages: 424-428 -
Conference paperPye JP, Page CG, Rochester GK, et al., 1988,
The XUV Wide Field Camera on Rosat: Plans for the Data Handling and Analysis
, Astronomy from Large Databases: Scientific Objectives and Methodological Approaches, Pages: 447-452 -
Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
A measurement of the tau lifetime
, Physics Letters B, Vol: 199, Pages: 580-584, ISSN: 0370-2693Using the ARGUS detector at the electron-positron storage ring DORIS II at DESY, we have measured the lifetime of the τ lepton to be (2.95±0.14±0.11)×10-13s. © 1987.
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
An upper limit on D<sup>0</sup>-D̄<sup>0</sup> mixing
, Physics Letters B, Vol: 199, Pages: 447-450, ISSN: 0370-2693We have searched for D0-D̄0 mixing in the cascade decay of D*+, using the excellent particle identification of the ARGUS detector. No mixing was observed, leading to an upper limit of 1.4% (90%CL) for Γ(D0 → D ̄0→X′) Γ(D0→ X). © 1987.
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
B meson decays into charmonium states
, Physics Letters B, Vol: 199, Pages: 451-456, ISSN: 0370-2693Using the ARGUS detector at the e +e- storage ring DORIS II, we have studied the colour-suppressed decays B→J ψ X and B→ψ′ X. We find the inclusive branching ratios for these two channels to be (1.07±0.16±0.19) % and (0.46±0.17±0.11) %, respectively. From a sample of reconstructed exclusive events the masses of the B0 and B+ mesons are determined to be (5279.5±1.6±3.0) MeV c2 and (5278.5±1.8±3.0) MeV c2, respectively. Branching ratios are determined from five events of the type B0→J ψ K*0 and three of B+→J/ψ K+. In the same data sample a search for B0→e+e-, μ+μ- and μ±e∓ leads to upper limits for such decays. © 1987.
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
Measurement of η' → π<sup>+</sup>π<sup>-</sup>γ in γγ collisions
, Physics Letters B, Vol: 199, Pages: 457-461, ISSN: 0370-2693The production of the pseudoscalar meson η'(958) is observed in the reaction e+e-→ e+e-η′→e+e- π+π-γ with the ARGUS detector at DESY. We measure the product Γγγ(η')Br(η′ →ρ{variant}γ) to be 1.13±0.04±0.13 keV. Using the known branching ratio s, we calculate Γγγ(η′) to be 3.76±0.13±0.47 keV and Γη' to be 203±32 keV. © 1987.
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
Determination of α<inf>s</inf> from a measurement of the direct photon spectrum in Γ(1S) decays
, Physics Letters B, Vol: 199, Pages: 291-296, ISSN: 0370-2693Using the ARGUS detector at the DORIS II e+e- storage ring we have measured direct photons from the decay ???(1S)→γgg. The ratio Rγ=Γ(???(1S)→γgg)/Γ(???(1S) →ggg)=(3.00±0.13±0.18)% has been determined, from which we deduce values of the strong coupling constant αs=0.225±0.011±0.019 and the QCD scale parameter ΛMS=115±17±28 MeV defined in the modified minimal-subtraction scheme. The shape of the measured spectrum clearly rules out the predictions of the lowest order QCD calculations. © 1987.
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
First observation of γγ → ωω
, Physics Letters B, Vol: 198, Pages: 577-582, ISSN: 0370-2693The reaction γγ → 2π+ 2π- 2π0 has been studied using the ARGUS detector at the e+e- storage ring DORIS II at DESY. Production of ω mesons is observed and, in particular, the reaction γγ → ωω is seen for the first time. The cross section for γγ → ωω has an enhancement at ∼ 1.9 GeV/c2 of about 10 nb. The cross sections for γγ → 2π+ 2π- 2π0 and γγ → ωπ+ π- π0 are also given. © 1987.
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Journal articleSUMNER TJ, CLEMENTS DL, WILLIAMS OR, et al., 1987,
COS-B UPPER LIMIT TO THE GREATER-THAN-70 MEV GAMMA-RAY FLUX FROM A GAMMA-RAY BURST EVENT OF 1979 NOVEMBER 9
, ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, Vol: 71, Pages: 557-560, ISSN: 0365-0138- Author Web Link
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- Citations: 1
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
First observation of γγ→K<sup>*0</sup>K<sup>*0</sup>
, Physics Letters B, Vol: 198, Pages: 255-260, ISSN: 0370-2693The final state K +K-π+π- has been studied in γγ interactions using the ARGUS detector at the e+e- storage ring DORIS II at DESY. Production of the vector meson pair K*0(892)K*0(892) is observed for the first time. The cross section for K+K- π+π-, K*0K-π++c.c. and K*0K*0 are all found to be of the order of a few nb. In the Wγγ range accessible, a mean upper limit of 0.5 nb at 95% CL is derived for φρ{variant}0 production. © 1987.
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Journal articleALBAJAR C, ALBROW MG, ALLKOFER OC, et al., 1987,
INTERMEDIATE VECTOR BOSON CROSS-SECTIONS AT THE CERN SUPER PROTON SYNCHROTRON COLLIDER AND THE NUMBER OF NEUTRINO TYPES
, PHYSICS LETTERS B, Vol: 198, Pages: 271-280, ISSN: 0370-2693- Author Web Link
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- Citations: 63
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Journal articleALBAJAR C, ALBROW MG, ALLKOFER OC, et al., 1987,
EVENTS WITH LARGE MISSING TRANSVERSE ENERGY AT THE CERN COLLIDER .3. MASS LIMITS ON SUPERSYMMETRIC PARTICLES
, PHYSICS LETTERS B, Vol: 198, Pages: 261-270, ISSN: 0370-2693- Author Web Link
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- Citations: 104
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
Measurement of the decay B<sup>0</sup>→D<sup>*-</sup>l<sup>+</sup>ν
, Physics Letters B, Vol: 197, Pages: 452-456, ISSN: 0370-2693Using the ARGUS detector at the e+e- storage ring DORIS II at DESY we have investigated the decays B0→D*-e+v and B0→D*-μ+ν. The B0 mesons were produced in 39600 Υ{hooked}(4S)→B0B0 decays. Assuming electron-muon universality we obtain a branching ratio BR(B0→D*-e+v)=BR(B0→D*-γm+ν)=(7.0±1.2±1.9)%. © 1987.
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Journal articleELLISON J, HALL G, ROE S, et al., 1987,
EVALUATION OF PROTOTYPE SILICON DRIFT DETECTORS
, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 260, Pages: 353-360, ISSN: 0168-9002- Author Web Link
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- Citations: 5
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Journal articleLEADER E, 1987,
CONSEQUENCES OF THE LARGE REAL-TO-IMAGINARY RATIO AT SQUARE-ROOT-S=546 GEV
, PHYSICAL REVIEW LETTERS, Vol: 59, Pages: 1525-1526, ISSN: 0031-9007- Author Web Link
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- Citations: 23
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Journal articleADAMS GP, ROCHESTER GK, SUMNER TJ, et al., 1987,
THE ULTRAVIOLET CALIBRATION SYSTEM FOR THE UK XUV TELESCOPE TO BE FLOWN ON THE ROSAT SATELLITE
, JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, Vol: 20, Pages: 1261-1264, ISSN: 0022-3735- Author Web Link
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- Citations: 7
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
First observation of γγ → ωϱ0
, Physics Letters B, Vol: 196, Pages: 101-106, ISSN: 0370-2693The reaction γγ → 2π+2π-π0 has been studied using the the ARGUS detector at the e+e- storage ring DORIS II at DESY. The production of the vector-meson pair ωρ{variant}0 is observed for the first time. The cross section for γγ → ωρ{variant}0 and the topological cross section for γγ → 2π+2π-π0 are given. The angular distribution in ωρ{variant}0 events do not indicate any specific dominant spin-parity; they are consistent with isotropic production and decay of the ω and ρ{variant}0 mesons over the available Wγγ range. © 1987.
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Journal articleSUMNER TJ, PENDLEBURY JM, SMITH KF, 1987,
CONVENTIONAL MAGNETIC SHIELDING
, JOURNAL OF PHYSICS D-APPLIED PHYSICS, Vol: 20, Pages: 1095-1101, ISSN: 0022-3727- Author Web Link
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- Citations: 89
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
Search for the decay τ<sup>-</sup> → v<inf>τ</inf>ηπ<sup>-</sup>
, Physics Letters B, Vol: 195, Pages: 307-310, ISSN: 0370-2693We have searched for the decay τ- → vτηπ- using data accumulated by the ARGUS detector at the e+e- storage ring DORIS II at DESY. No η signal was found in the π+π-π0 subsystems of the decay τ- →vτπ-π-π+ π0. We obtain an upper limit for the branching ratio of the decay τ- → vτηπ- of 1.3% at the 95% confidence level. © 1987.
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
Search for the decay D<sup>s</sup>→ρ<sup>0</sup>π as evidnce for quark annnihilation
, Physics Letters B, Vol: 195, Pages: 102-106, ISSN: 0370-2693We have searched for the decay D+s→ρ0π+ which can only occur via annihilation of the constituent quarks, and compared it to the decay D+s→ρπ+ where the charm quark may decay independently of the light quark. An upper limit on the ratio BR(D+s→ρ0π+) BR(D+s→ρπ+) of 0.22 at the 90% confidence level is obtained. This result constra ins models which enhance. the weak annihilation contribution to heavy meson decays by final-state interactions, a mechanism used for explaining the large branching ratio observed for D0→ρK0. © 1987.
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Journal articleALBAJAR C, ALBROW MG, ALLKOFER OC, et al., 1987,
PRODUCTION OF WS WITH LARGE TRANSVERSE-MOMENTUM AT THE CERN PROTON-ANTIPROTON COLLIDER
, PHYSICS LETTERS B, Vol: 193, Pages: 389-398, ISSN: 0370-2693- Author Web Link
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- Citations: 39
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Journal articleODELL VR, RANKIN P, YOST GP, et al., 1987,
FORWARD CHARGE ASYMMETRY IN 20-GEV GAMMA-P REACTIONS
, PHYSICAL REVIEW D, Vol: 36, Pages: 1-7, ISSN: 0556-2821- Author Web Link
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- Citations: 6
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Journal articleAlbrecht H, Andam AA, Binder U, et al., 1987,
Observation of B<sup>0</sup>-B<sup>0</sup> mixing
, Physics Letters B, Vol: 192, Pages: 245-252, ISSN: 0370-2693Using the ARGUS detector at the DORIS II storage ring we have searched in three different ways for B0-B0 mixing in Υ{hooked} (4S) decays. One explicitly mixed event, a decay Υ{hooked} (4S)→B0B0, has been completely reconstructed. Furthermore, we observe a 4.0 standard deviation signal of 24.8 events with like-sign lepton pairs and a 3.0 standard deviation signal of 4.1 events containing one reconstructed B0(B0) and an additional fast ℓ+(ℓ)-. This leads to the conclusion that B0-B0 mixing is substantial. For the mixing parameter we obtain r=0.21±0.08. © 1987.
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Journal articleSUMNER TJ, 1987,
A CALCULATION OF THE EFFECT OF A COAXIAL SUPERCONDUCTING SHIELD ON THE MAGNETIC-FIELD DISTRIBUTION OF AN ENCLOSED COAXIAL SOLENOID
, JOURNAL OF PHYSICS D-APPLIED PHYSICS, Vol: 20, Pages: 692-696, ISSN: 0022-3727- Author Web Link
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- Citations: 10
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