Simultaneous precision spectroscopy of pp, Be<mml:mprescripts/><mml:none/>7, and pep solar neutrinos with Borexino Phase-II

2017/07/31 by M. Agostini, K. Altenmuller, K. Altenmüller +124 · 1 citation
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Computer science #Neutrino Physics Research #Particle physics theoretical and experimental studies #astro-ph.SR #hep-ex

paper · pdf · doi:10.1103/physrevd.100.082004

published as Phys. Rev. D 100, 082004 (2019) · 8 pages, 7 figures

openalex created_date 2017/08/08 · openalex publication_date 2019/10/28 · arxiv created 2019/12/20 · arxiv updated 2019/12/23 · openalex updated_date 2026/08/05

Abstract

We present the simultaneous measurement of the interaction rates R_pp, R_Be, R_pep of pp, ⁷Be, and pep solar neutrinos performed with a global fit to the Borexino data in an extended energy range (0.19--2.93) MeV with particular attention to details of the analysis methods. This result was obtained by analyzing 1291.51 days of Borexino Phase-II data, collected after an extensive scintillator purification campaign. Using counts per day (cpd)/100 ton as unit, we find R_pp=134\ifmmode±\else\textpm\fi10(stat)_\ensuremath-10⁺⁶(sys), R_Be=\phantom\rule0ex0ex48.3\ifmmode±\else\textpm\fi1.1(stat)_\ensuremath-0.7^+0.4(sys); and R_pep^HZ=2.43\ifmmode±\else\textpm\fi0.36(stat)_\ensuremath-0.22^+0.15(sys) assuming the interaction rate R_CNO of CNO-cycle (Carbon, Nitrogen, Oxigen) solar neutrinos according to the prediction of the high metallicity standard solar model, and R_pep^LZ=2.65\ifmmode±\else\textpm\fi0.36(stat)_\ensuremath-0.24^+0.15(sys) according to that of the low metallicity model. An upper limit R_CNO&lt;8.1 cpd/100 ton (95% C.L.) is obtained by setting in the fit a constraint on the ratio R_pp/R_pep (47.7\ifmmode±\else\textpm\fi0.8 cpd/100 ton or 47.5\ifmmode±\else\textpm\fi0.8 cpd/100 ton according to the high or low metallicity hypothesis).

Citations

• Present and future bounds on non-standard neutrino interactions
• Neutrinos from the primary proton–proton fusion process in the Sun
• Homestake result, sterile neutrinos, and low energy solar neutrino experiments
• First Evidence ofpepSolar Neutrinos by Direct Detection in Borexino
• Measurement of the Rate ofνe+d→p+p+e−Interactions Produced byB<mml:mprescripts/>8Solar Neutrinos at the Sudbury Neutrino Observatory
• The Borexino detector at the Laboratori Nazionali del Gran Sasso
• A New Generation of Standard Solar Models
• The Monte Carlo simulation of the Borexino detector

Cited by

• Potassium-40 geoneutrinos detection and the Earth's large-scale structures imaging by directional geoneutrino detection