2015/06/16 by Borexino collaboration, M. Agostini, S. Appel +110 · 1 citation
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Atomic and Subatomic Physics Research #Neutrino Physics Research #hep-ex #physics.ins-det
paper · pdf · doi:10.1103/physrevd.92.031101
published as Phys. Rev. D 92, 031101 (2015) · 4 pages, 4 figures
arxiv created 2015/06/16 · openalex publication_date 2015/08/07 · arxiv updated 2015/08/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
We report an improved geoneutrino measurement with Borexino from 2056 days of data taking. The present exposure is 5.5 AE 0.3 10 31 proton yr. Assuming a chondritic Th/U mass ratio of 3.9, we obtain 23.7 6.5 -5.7 stat 0.9 -0.6 sys geoneutrino events. The null observation of geoneutrinos with Borexino alone has a probability of 3.6 10 -9 (5.9). A geoneutrino signal from the mantle is obtained at 98% C.L.