Measurement of reactor antineutrino oscillation at SNO+

TY - JOUR

T1 - Measurement of reactor antineutrino oscillation at SNO+

AU - Wilson, Jeanne

AU - Di Lodovico, Francesca

AU - Cookman, Daniel

PY - 2025/5/7

Y1 - 2025/5/7

N2 - The SNO+ collaboration reports its second spectral analysis of reactor antineutrino oscillation using 286 tonne-years of new data. The measured energies of reactor antineutrino candidates were fitted to obtain the second-most precise determination of the neutrino mass-squared difference Δm221 = (7.96+0.48−0.42) × 10−5 eV2. Constraining Δm221 and sin2θ12 with measurements from long-baseline reactor antineutrino and solar neutrino experiments yields Δm221 = (7.58+0.18−0.17) × 10−5 eV2 and sin2θ12=0.308±0.013. This fit also yields a first measurement of the flux of geoneutrinos in the Western Hemisphere, with 73+47−43 TNU at SNO+.

AB - The SNO+ collaboration reports its second spectral analysis of reactor antineutrino oscillation using 286 tonne-years of new data. The measured energies of reactor antineutrino candidates were fitted to obtain the second-most precise determination of the neutrino mass-squared difference Δm221 = (7.96+0.48−0.42) × 10−5 eV2. Constraining Δm221 and sin2θ12 with measurements from long-baseline reactor antineutrino and solar neutrino experiments yields Δm221 = (7.58+0.18−0.17) × 10−5 eV2 and sin2θ12=0.308±0.013. This fit also yields a first measurement of the flux of geoneutrinos in the Western Hemisphere, with 73+47−43 TNU at SNO+.

M3 - Article

SN - 0031-9007

JO - Physical Review Letters

JF - Physical Review Letters

ER -