Search for Extraterrestrial Antineutrino Sources with the KamLAND Detector
| dc.contributor.author | Piepke, Andreas | |
| dc.contributor.other | University of Alabama Tuscaloosa | |
| dc.date.accessioned | 2019-05-13T21:20:15Z | |
| dc.date.available | 2019-05-13T21:20:15Z | |
| dc.date.issued | 2012-01-17 | |
| dc.description.abstract | We present the results of a search for extraterrestrial electron antineutrinos (v̅ₑ) in the energy range 8.3MeV < E v̅ₑ < 31.8MeV using the KamLAND detector. In an exposure of 4.53 kton-year, we identify 25 candidate events. All of the candidate events can be attributed to background, most importantly neutral current atmospheric neutrino interactions, setting an upper limit on the probability of ⁸B solar vₑ's converting into v̅ₑ's at 5.3 x 10⁻⁵ (90% CL), if we assume an undistorted v̅ₑ shape. This limit corresponds to a solar v̅ₑ flux of 93 cm⁻²s⁻¹ or an event rate of 1.6 events (kton – year)⁻¹ above the energy threshold (E v̅ₑ ≥ 8.3MeV). The present data also allows us to set more stringent limits on the diffuse supernova neutrino flux and on the annihilation rates for light dark matter particles. | en_US |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://ir.ua.edu/handle/123456789/5521 | |
| dc.language | English | |
| dc.language.iso | en_US | |
| dc.subject | dark matter | |
| dc.subject | ISM: supernova remnants | |
| dc.subject | neutrinos | |
| dc.subject | Sun: particle emission | |
| dc.title | Search for Extraterrestrial Antineutrino Sources with the KamLAND Detector | en_US |
| dc.type | text |
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