C K Hargrove

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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)
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)
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)
  • T C Andersen, R A Black, I Blevis, J Boger, E Bonvin, M Chen +37 others
  • 2002
As photodisintegration of deuterons mimics the disintegration of deuterons by neutrinos, the accurate measurement of the radioactivity from thorium and uranium decay chains in the heavy water in the Sudbury Neutrino Observatory (SNO) is essential for the determination of the total solar neutrino flux. A radium assay technique of the required sensitivity is(More)
  • G Abbiendi, K Ackerstaff, P F Akesson, G Alexander, J Allison, K J Anderson +204 others
  • 1999
Searches for unstable neutral and charged heavy leptons, N and L ± , and for excited states of neutral and charged leptons, ν * , e * , µ * , and τ * , have been performed in e + e − collisions using data collected by the OPAL detector at LEP. The data analysed correspond to an integrated luminosity of about 58 pb −1 at a centre-of-mass energy of 183 GeV,(More)
  • G Abbiendi, K Ackerstaff, G Alexander, J Allison, N Altekamp, K J Anderson +161 others
  • 1999
A search for pair produced scalar fermions with couplings that violate R-parity has been performed using a data sample corresponding to an integrated luminosity of 56 pb −1 at a centre-of-mass energy of √ s = 183 GeV collected with the OPAL detector at LEP. An important consequence of R-parity breaking interactions is that the lightest supersymmet-ric(More)
  • K Ackerstaff, G Alexander, J Allison, N Altekamp, K J Anderson, S Anderson +262 others
  • 1998
Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 × 10 6 hadronic Z 0 decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near(More)