Complete results for five years of GNO solar neutrino observations

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Abstract

We report the complete GNO solar neutrino results for the measuring periods GNO III, GNO II, and GNO I. The result for GNO III (last 15 solar runs) is [54.3 -9.3+9.9 (stat)±2.3(syst)]SNU (1σ) or [54.3 -9.6+10.2 (incl. syst)] SNU (1σ) with errors combined. The GNO experiment is now terminated after altogether 58 solar exposure runs that were performed between 20 May 1998 and 9 April 2003. The combined result for GNO (I + II + III) is [62.9 -5.3+5.5 (stat)±2.5(syst)] SNU (1σ) or [62.9 -5.9+6.0 ] SNU (1σ) with errors combined in quadrature. Overall, gallium based solar observations at LNGS (first in GALLEX, later in GNO) lasted from 14 May 1991 through 9 April 2003. The joint result from 123 runs in GNO and GALLEX is [69.3±5.5(incl. syst)] SNU (1σ). The distribution of the individual run results is consistent with the hypothesis of a neutrino flux that is constant in time. Implications from the data in particle- and astrophysics are reiterated. © 2005 Elsevier B.V. All rights reserved.

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Altmann, M., Balata, M., Belli, P., Bellotti, E., Bernabei, R., Burkert, E., … Zanotti, L. (2005). Complete results for five years of GNO solar neutrino observations. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 616(3–4), 174–190. https://doi.org/10.1016/j.physletb.2005.04.068

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