D L Wark

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Results are reported from the complete salt phase of the Sudbury Neutrino Observatory experiment in which NaCl was dissolved in the D 2 O target. The addition of salt enhanced the signal from neutron capture, as compared to the pure D 2 O detector. By making a statistical separation of charged-current events from other types based on event-isotropy(More)
  • J Boger, R L Hahn, J K Rowley, A L Carter, B Hollebone, D Kessler +195 others
  • 2000
The Sudbury Neutrino Observatory is a second-generation water Cherenkov detector designed to determine whether the currently observed solar neutrino de"cit is a result of neutrino oscillations. The detector is unique in its use of D O as a detection medium, permitting it to make a solar model-independent test of the neutrino oscillation hypothesis by(More)
  • E Aslanides, J-J Aubert, S Basa, F Bernard, V Bertin, M Billault +132 others
  • 1999
The ANTARES Collaboration proposes to construct a large area water Cherenkov detector in the deep Mediterranean Sea, optimised for the detection of muons from high-energy astrophysical neutrinos. This paper presents the scientific motivation for building such a device, along with a review of the technical issues involved in its design and construction. The(More)
The T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Δm(23)(2)| = 2.4×10(-3)  eV(2), sin(2)2θ(23) = 1 and sin(2)2θ(13) = 0, the expected number of such events is 1.5±0.3(syst).(More)
  • P Amram, S Anvar, E Aslanides, J-J Aubert, R Azoulay, S Basa +108 others
  • 1999
2 Abstract The ANTARES collaboration has performed a series of in situ measurements to study the background light for a planned undersea neutrino telescope. Such background can be caused by 40 K decays or by biological activity. We report on measurements at two sites in the Mediterranean Sea at depths of 2400 m and 2700 m, respectively. Three(More)
Upper limits on the e flux at the Sudbury Neutrino Observatory have been set based on the e charged-current reaction on deuterium. The reaction produces a positron and two neutrons in coincidence. This distinctive signature allows a search with very low background for e 's from the Sun and other potential sources. Both differential and integral limits on(More)
The first stage of a next-generation long baseline neutrino oscillation experiment is proposed to explore the physics beyond the Standard Model. The experiment will use the high intensity proton beam from the JHF 50 GeV proton synchrotron (JHF PS), and Super-Kamiokande as a far detector. The baseline length will be 295 km. The beam power of JHF PS is(More)
A search has been made for sinusoidal periodic variations in the 8 B solar neutrino flux using data collected by the Sudbury Neutrino Observatory over a 4-year time interval. The variation at a period of 1 yr is consistent with modulation of the 8 B neutrino flux by the Earth's orbital eccentricity. No significant sinusoidal periodicities are found with(More)
  • J Boger, R L Hahn, J K Rowley, A L Carter, B Hollebone, D Kessler +190 others
  • 1999
The Sudbury Neutrino Observatory is a second generation water Cerenkov detector designed to determine whether the currently observed solar neutrino deecit is a result of neutrino oscillations. The detector is unique in its use of D 2 O as a detection medium, permitting it to make a solar modellindependent test of the neutrino oscillation hypothesis by(More)
Data from the Sudbury Neutrino Observatory have been used to constrain the lifetime for nucleon decay to "invisible" modes, such as n-->3nu. The analysis was based on a search for gamma rays from the deexcitation of the residual nucleus that would result from the disappearance of either a proton or neutron from 16O. A limit of tau(inv)>2 x 10(29) yr is(More)