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

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

SNO

Collaboration

•

S.N. Ahmed

Sep, 2003

5 pages

Published in:

Phys.Rev.Lett. 92 (2004) 181301

e-Print:

nucl-ex/0309004 [nucl-ex]

DOI:

10.1103/PhysRevLett.92.181301

PDG:

\Delta

{}^{2}_{21}

Experiments:

SNO

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Abstract: (arXiv)

The Sudbury Neutrino Observatory (SNO) has precisely determined the total active (nu_x) 8B solar neutrino flux without assumptions about the energy dependence of the nu_e survival probability. The measurements were made with dissolved NaCl in the heavy water to enhance the sensitivity and signature for neutral-current interactions. The flux is found to be 5.21 +/- 0.27 (stat) +/- 0.38 (syst) x10^6 cm^{-2}s^{-1}, in agreement with previous measurements and standard solar models. A global analysis of these and other solar and reactor neutrino results yields Delta m^{2} = 7.1^{+1.2}_{-0.6}x10^{-5} ev^2 and theta = 32.5^{+2.4}_{-2.3} degrees. Maximal mixing is rejected at the equivalent of 5.4 standard deviations.

Note:

Submitted to Phys. Rev. Lett

neutrino: solar
neutrino: flux
neutrino deuteron: interaction
neutral current
charged current
neutrino electron: elastic scattering
neutrino: mass difference
neutrino: mixing angle
model: solar
SNO

References(21)

Figures(9)

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