{"paper":{"title":"Measurement of the 8B Solar Neutrino Flux with the KamLAND Liquid Scintillator Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Gando, A. Kozlov, A. Piepke, A. Suzuki, A. Tang, B.D. Xu, B.E. Berger, B.K. Fujikawa, C.E. Lane, C. Grant, C. Mauger, C. Zhang, D.A. Dwyer, D. McKee, D.M. Markoff, E. Yonezawa, F. Piquemal, F. Suekane, G.A. Horton-Smith, G. Gratta, G. Keefer, H. Ikeda, H.J. Karwowski, H.M. Steiner, H. Murayama, H. Takahashi, H. Watanabe, H. Yabumoto, H. Yoshida, I. Shimizu, J.A. Detwiler, J.G. Learned, J. Maricic, J. Shirai, J.-S. Ricol, KamLAND Collaboration: S. Abe, K.E. Downum, K. Furuno, K. Han, K. Ichimura, K. Inoue, K.M. Heeger, K. Nakajima, K. Nakamura, K. Narita, K. Tamae, K. Tolich, L.A. Winslow, M. Batygov, M. Koga, M. Nakamura, M.P. Decowski, M. Sakai, N. Nagai, N. Takahashi, O. Perevozchikov, R.D. McKeown, R. Kadel, S. Enomoto, S.J. Freedman, S. Matsuno, S. Pakvasa, S. Yoshida, T. Bloxham, T.I. Banks, T. Miletic, T. Mitsui, T. Morikawa, T. O'Donnell, W. Kimura, W. Tornow, Y. Efremenko, Y. Gando, Y. Kamyshkov, Y. Kibe, Y. Kishimoto, Y. Minekawa, Y. Shimizu, Y. Takemoto","submitted_at":"2011-06-04T21:45:46Z","abstract_excerpt":"We report a measurement of the neutrino-electron elastic scattering rate from 8B solar neutrinos based on a 123 kton-day exposure of KamLAND. The background-subtracted electron recoil rate, above a 5.5 MeV analysis threshold is 1.49+/-0.14(stat)+/-0.17(syst) events per kton-day. Interpreted as due to a pure electron flavor flux with a 8B neutrino spectrum, this corresponds to a spectrum integrated flux of 2.77+/-0.26(stat)+/-0.32(syst) x 10^6 cm^-2s^-1. The analysis threshold is driven by 208Tl present in the liquid scintillator, and the main source of systematic uncertainty is due to backgrou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.0861","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}