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High Sensitivity Search for v_e’s from the Sun and Other Sources at KamLAND

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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Abstract

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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.92.071301DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevLett.92.071301PublisherUNSPECIFIED
http://prl.aps.org/abstract/PRL/v92/i7/e071301PublisherUNSPECIFIED
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.
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Funding AgencyGrant Number
Japanese Ministry of Education, Culture, Sports, Science, and TechnologyUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Classification Code:PACS: 26.65.+t, 13.35.Hb, 14.60.St
Record Number:CaltechAUTHORS:20111012-095942628
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20111012-095942628
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.
ID Code:27180
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:12 Oct 2011 17:23
Last Modified:26 Dec 2012 14:15

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