## Abstract

Data corresponding to a KamLAND detector exposure of 0.28 kton yr has been used to search for [Formula presented]’s in the energy range [Formula presented]. No candidates were found for an expected background of [Formula presented] events. This result can be used to obtain a limit on [Formula presented] fluxes of any origin. Assuming that all [Formula presented] flux has its origin in the Sun and has the characteristic [Formula presented] solar [Formula presented] energy spectrum, we obtain an upper limit of [Formula presented] (90% C.L.) on the [Formula presented] flux. We interpret this limit, corresponding to [Formula presented] of the standard solar model [Formula presented] [Formula presented] flux, in the framework of spin-flavor precession and neutrino decay models.

Original language | English |
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Journal | Physical review letters |

Volume | 92 |

Issue number | 7 |

DOIs | |

Publication status | Published - 2004 |

## ASJC Scopus subject areas

- Physics and Astronomy(all)