Eguchi, K. and Horton-Smith, G. A. and Mauger, C. and McKeown, R. D. and Tipton, B. and Vogel, P. (2004) High Sensitivity Search for v_e’s from the Sun and Other Sources at KamLAND. Physical Review Letters, 92 (7). Art. No. 071301. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:20111012-095942628
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Data corresponding to a KamLAND detector exposure of 0.28 kton yr has been used to search for ν̅ _e’s in the energy range 8.3 < E_(ν̅e) < 14.8 MeV. No candidates were found for an expected background of 1.1±0.4 events. This result can be used to obtain a limit on ν̅_e fluxes of any origin. Assuming that all ν̅_e flux has its origin in the Sun and has the characteristic ^8B solar ν_e energy spectrum, we obtain an upper limit of 3.7×10^2 cm^(-2) ^(s-1) (90% C.L.) on the ν̅_e flux. We interpret this limit, corresponding to 2.8×10^(-4) of the standard solar model ^8B ν_e flux, in the framework of spin-flavor precession and neutrino decay models.
|Additional Information:||© 2004 The American Physical Society. Received 22 October 2003; published 20 February 2004. The KamLAND experiment is supported by the COE program of the Japanese Ministry of Education, Culture, Sports, Science, and Technology and the U.S. Department of Energy. We are grateful to the Kamioka Mining and Smelting Company for providing services at the experimental site.|
|Classification Code:||PACS: 26.65.+t, 13.35.Hb, 14.60.St|
|Official Citation:||High Sensitivity Search for ν̅ e’s from the Sun and Other Sources at KamLAND K. Eguchi et al. (KamLAND Collaboration) Published 20 February 2004 (5 pages) 071301|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||12 Oct 2011 17:23|
|Last Modified:||26 Dec 2012 14:15|
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