PhysRevLett.92.181301.pdf (180.85 kB)
Measurement of the total active B-8 solar neutrino flux at the Sudbury Neutrino Observatory with enhanced neutral current sensitivity
journal contributionposted on 2023-06-07, 22:43 authored by S N Ahmed, Simon PeetersSimon Peeters, Kai Zuber, SNO Collaboration
The Sudbury Neutrino Observatory has precisely determined the total active (nu(x)) B-8 solar neutrino flux without assumptions about the energy dependence of the nu(e) survival probability. The measurements were made with dissolved NaCl in 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 Deltam(2)=7.1(-0.6)(+1.2)x10(-5) eV(2) and theta= 32.5(-2.3)(+2.4) degrees. Maximal mixing is rejected at the equivalent of 5.4 standard deviations.
- Published version
JournalPhysical Review Letters
PublisherAmerican Physical Society
Department affiliated with
- Physics and Astronomy Publications
NotesThis paper is the confirmation on the flavour change of solar neutrinos on their way to earth. I contributed to the running of the experiment and completed a low-energy background analysis, the analysis of the most important physics background of this experiment.
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