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SNO+

Steve Biller

Professor of Particle Physics

Sub department

  • Particle Physics

Research groups

  • SNO+
Steven.Biller@physics.ox.ac.uk
Telephone: 01865 (2)73386
Denys Wilkinson Building, room 568a
  • About
  • Publications

Measurement of the total active 8B solar neutrino flux at the Sudbury Neutrino Observatory with enhanced neutral current sensitivity

Physical Review Letters 92 (2004) article 181301 6 pages

Authors:

NA Jelley, S.N.Ahmed, A.E.Anthony, E.W.Beier

Constraints on Nucleon Decay via Invisible Modes from the Sudbury Neutrino Observatory

Physical Review Letters 92 (2004) 102004 4pp

Authors:

SD Biller, A.E. Anthony, E.W. Beier, S.N. Ahmed

Electron antineutrino search at the Sudbury Neutrino Observatory - art. no. 093014

PHYSICAL REVIEW D 70:9 (2004) ARTN 093014

Authors:

B Aharmim, SN Ahmed, EW Beier, A Bellerive, SD Biller, J Boger, MG Boulay, TJ Bowles, SJ Brice, TV Bullard, YD Chan, M Chen, X Chen, BT Cleveland, GA Cox, X Dai, F Dalnoki-Veress, PJ Doe, RS Dosanjh, G Doucas, MR Dragowsky, CA Duba, FA Duncan, M Dunford, JA Dunmore, ED Earle, SR Elliott, HC Evans, GT Ewan, J Farine, H Fergani, F Fleurot, JA Formaggio, MM Fowler, K Frame, W Frati, BG Fulsom, N Gagnon, K Graham, DR Grant, RL Hahn, AL Hallin, ED Hallman, AS Hamer, WB Handler, CK Hargrove, PJ Harvey, R Hazama, KM Heeger, WJ Heintzelman, J Heise, RL Helmer, RJ Hemingway, A Hime, MA Howe, P Jagam, NA Jelley, JR Klein, LL Kormos, MS Kos, A Krüger, CB Krauss, AV Krumins, T Kutter, CCM Kyba, H Labranche, R Lange, J Law, IT Lawson, KT Lesko, JR Leslie, I Levine, S Luoma, R MacLellan, S Majerus, HB Mak, J Maneira, AD Marino, N McCauley, AB McDonald, S McGee, G McGregor, C Mifflin, KKS Miknaitis, GG Miller, BA Moffat, CW Nally, MS Neubauer, BG Nickel, AJ Noble, EB Norman, NS Oblath, CE Okada, RW Ollerhead, JL Orrell, SM Oser, C Ouellet, SJM Peeters, AWP Poon, K Rielage, BC Robertson, RGH Robertson, E Rollin, SSE Rosendahl, VL Rusu, MH Schwendener, O Simard, JJ Simpson, CJ Sims, D Sinclair, P Skensved, MWE Smith, N Starinsky, RG Stokstad, LC Stonehill, R Tafirout, Y Takeuchi, G Tesic, M Thomson, T Tsui, R Van Berg, RG Van de Water, CJ Virtue, BL Wall, D Waller, CE Waltham, HWC Tseung, DL Wark, N West, JB Wilhelmy, JF Wilkerson, JR Wilson, P Wittich, JM Wouters, M Yeh, K Zuber

A search for correlations of TeV gamma rays with ultra-high-energy cosmic rays

Astrophysical Journal 586:2 I (2003) 1232-1237

Authors:

CW Akerlof, S Biller, P Boyle, J Buckley, DA Carter-Lewis, M Catanese, MF Cawley, V Connaughton, DJ Fegan, J Finley, J Gaidos, AM Hillas, F Krennrich, RC Lamb, R Lessard, J Mcenery, G Mohanty, NA Porter, J Quinn, A Rodgers, HJ Rose, F Samuelson, MS Schubnell, G Sembroski, R Srinivasan, TC Weekes, J Zweerink

Abstract:

A search was conducted for TeV γ-rays emitted from the direction of the ultra-high-energy cosmic ray detected by the Fly's Eye experiment with energy E ∼ 3 × 1020 eV. No enhancement was found at a level of 10-10 cm-2 s-1 for E > 350 GeV. A steady source of ultra-high-energy cosmic ray protons or photons would be expected to produce a γ-ray flux above this level. An upper limit was also set for the flux of TeV γ-rays from 3C 147, the most prominent active galactic nucleus in the error box.

Neutral current and day night measurements from the pure D2O phase of SNO

NUCL PHYS B-PROC SUP 118 (2003) 3-14

Authors:

AL Hallin, EW Beier, SD Biller, MG Boulay, MG Bowler, TJ Bowles, SJ Brice, TV Bullard, J Cameron, YD Chan, X Chen, M Chen, BT Cleveland, GA Cox, X Dai, F Dalnoki-Veress, PJ Doe, G Doucas, MR Dragowsky, CA Duba, FA Duncan, M Dunford, JA Dunmore, ED Earle, SR Elliott, HC Evans, GT Ewan, J Farine, H Fergani, JA Formaggio, MM Fowler, K Frame, W Frati, N Gagnon, K Graham, DR Grant, RL Hahn, ED Hallman, AS Hamer, WB Handler, CK Hargrove, PJ Harvey, R Hazama, KM Heeger, WJ Heintzelman, J Heise, RL Helmer, A Hime, M Howe, P Jagam, NA Jelley, K Kazkaz, PT Keener, JR Klein, T Kutter, CCM Kyba, J Law, IT Lawson, KT Lesko, J Leslie, I Levine, S Luoma, S Majerus, HB Mak, J Maneira, J Manor, AD Marino, N McCauley, AB McDonald, G McGregor, GG Miller, CW Nally, AJ Noble, EB Norman, CE Okada, JL Orrell, SM Oser, AWP Poon, BC Robertson, RGH Robertson, SSE Rosendahl, VL Rusu, KK Schaffer, MH Schwendener, JJ Simpson, CJ Sims, D Sinclair, P Skensved, MWE Smith, T Spreitzer, N Starinsky, RG Stokstad, LC Stonehill, R Tafirout, N Tagg, R Van Berg, RGV Van de Water, CJ Virtue, CE Waltham, DL Wark, N West, JB Wilhelmy, JF Wilkerson, JR Wilson, P Wittich, JM Wouters, M Yeh

Abstract:

The Sudbury Neutrino Observatory is a 1000 T D2O Cerenkov detector that is sensitive to B-8 solar neutrinos. The energy, radius, and direction with respect to the sun is Measured for each neutrino event; these distributions are used to separately determine the rates of the charged current, neutral current and electron scattering reactions of neutrinos on deuterium. Assuming an undistorted B-8 spectrum, the nu(e) component of the B-8 solar flux is phi(e) = 1.76(-0.05)(+0.05) (stat.)(-0.09)(+0.09) (syst.) X 10(6) cm(-2)s(-1) based on events with a measured kinetic energy above 5 MeV. The non-nu(e) component is phi(mutau) = 3.41(-0.45)(+0.45)(stat.)(-0.45)(+0.48) (syst.) X 10(6) cm(-2)s(-1), 5.3sigma greater than zero, providing strong evidence for solar nu(e) flavor transformation. The total flux measured with the NC reaction is phi(NC) = 5.09(-0.43)(+0.44) (stat.)(-0.43)(+0.46) (syst.) X 10(6) cm(-2)s(-1), consistent with solar models. The night minus day rate is 14.0% +/- 6.3%(+1.5)(-1.4)% of the average rate. If the total flux of active neutrinos is additionally constrained to have no asymmetry, the nu(e) asymmetry is found to be 7.0% +/- 4.9%(+1.3)(-1.2)%. A global solar neutrino analysis in terms of matter-enhanced oscillations of two active flavors strongly favors the Large Mixing Angle (LMA) solution.

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