Electron antineutrino search at the Sudbury Neutrino Observatory
Upper limits on the νe flux at the Sudbury Neutrino Observatory have been set based on the νe charged-current reaction on deuterium. The reaction produces a positron and two neutrons in coincidence. This distinctive signature allows a search with very low background for νe's from the Sun and ot...
| Egile Nagusiak: | , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formatua: | Journal article |
| Hizkuntza: | English |
| Argitaratua: |
2004
|
| _version_ | 1826265421774323712 |
|---|---|
| author | Aharmim, B Ahmed, SN Beier, E Bellerive, A Biller, S Boger, J Boulay, MG Bowles, T Brice, S Bullard, T Chan, Y Chen, M Chen, X Cleveland, B Cox, G Dai, X Dalnoki-Veress, F Doe, P Dosanjh, R Doucas, G Dragowsky, MR Duba, C Duncan, F Dunford, M Dunmore, J |
| author_facet | Aharmim, B Ahmed, SN Beier, E Bellerive, A Biller, S Boger, J Boulay, MG Bowles, T Brice, S Bullard, T Chan, Y Chen, M Chen, X Cleveland, B Cox, G Dai, X Dalnoki-Veress, F Doe, P Dosanjh, R Doucas, G Dragowsky, MR Duba, C Duncan, F Dunford, M Dunmore, J |
| author_sort | Aharmim, B |
| collection | OXFORD |
| description | Upper limits on the νe flux at the Sudbury Neutrino Observatory have been set based on the νe charged-current reaction on deuterium. The reaction produces a positron and two neutrons in coincidence. This distinctive signature allows a search with very low background for νe's from the Sun and other potential sources. Both differential and integral limits on the νe flux have been placed in the energy range from 4-14.8 MeV. For an energy-independent νe → νe conversion mechanism, the integral limit on the flux of solar νe's in the energy range from 4-14.8 MeV is found to be Φνe ≤ 3.4 × 104 cm-2 s -1 (90% C.L.), which corresponds to 0.81% of the standard solar model 8B νe flux of 5.05 × 106 cm -2 s-1, and is consistent with the more sensitive limit from KamLAND in the 8.3-14.8 MeV range of 3.7 × 102 cm -2 s-1 (90% C.L.). In the energy range from 4-8 MeV, a search for νe's is conducted using coincidences in which only the two neutrons are detected Assuming a νe spectrum for the neutron induced fission of naturally occurring elements, a flux limit of Φνe ≤ 2.0 × 106 cm-2 s -1 (90% C.L.) is obtained. |
| first_indexed | 2024-03-06T20:23:26Z |
| format | Journal article |
| id | oxford-uuid:2e9cb3fb-24b0-4d16-b0c2-70a16f5aa702 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:23:26Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:2e9cb3fb-24b0-4d16-b0c2-70a16f5aa7022022-03-26T12:49:57ZElectron antineutrino search at the Sudbury Neutrino ObservatoryJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2e9cb3fb-24b0-4d16-b0c2-70a16f5aa702EnglishSymplectic Elements at Oxford2004Aharmim, BAhmed, SNBeier, EBellerive, ABiller, SBoger, JBoulay, MGBowles, TBrice, SBullard, TChan, YChen, MChen, XCleveland, BCox, GDai, XDalnoki-Veress, FDoe, PDosanjh, RDoucas, GDragowsky, MRDuba, CDuncan, FDunford, MDunmore, JUpper limits on the νe flux at the Sudbury Neutrino Observatory have been set based on the νe charged-current reaction on deuterium. The reaction produces a positron and two neutrons in coincidence. This distinctive signature allows a search with very low background for νe's from the Sun and other potential sources. Both differential and integral limits on the νe flux have been placed in the energy range from 4-14.8 MeV. For an energy-independent νe → νe conversion mechanism, the integral limit on the flux of solar νe's in the energy range from 4-14.8 MeV is found to be Φνe ≤ 3.4 × 104 cm-2 s -1 (90% C.L.), which corresponds to 0.81% of the standard solar model 8B νe flux of 5.05 × 106 cm -2 s-1, and is consistent with the more sensitive limit from KamLAND in the 8.3-14.8 MeV range of 3.7 × 102 cm -2 s-1 (90% C.L.). In the energy range from 4-8 MeV, a search for νe's is conducted using coincidences in which only the two neutrons are detected Assuming a νe spectrum for the neutron induced fission of naturally occurring elements, a flux limit of Φνe ≤ 2.0 × 106 cm-2 s -1 (90% C.L.) is obtained. |
| spellingShingle | Aharmim, B Ahmed, SN Beier, E Bellerive, A Biller, S Boger, J Boulay, MG Bowles, T Brice, S Bullard, T Chan, Y Chen, M Chen, X Cleveland, B Cox, G Dai, X Dalnoki-Veress, F Doe, P Dosanjh, R Doucas, G Dragowsky, MR Duba, C Duncan, F Dunford, M Dunmore, J Electron antineutrino search at the Sudbury Neutrino Observatory |
| title | Electron antineutrino search at the Sudbury Neutrino Observatory |
| title_full | Electron antineutrino search at the Sudbury Neutrino Observatory |
| title_fullStr | Electron antineutrino search at the Sudbury Neutrino Observatory |
| title_full_unstemmed | Electron antineutrino search at the Sudbury Neutrino Observatory |
| title_short | Electron antineutrino search at the Sudbury Neutrino Observatory |
| title_sort | electron antineutrino search at the sudbury neutrino observatory |
| work_keys_str_mv | AT aharmimb electronantineutrinosearchatthesudburyneutrinoobservatory AT ahmedsn electronantineutrinosearchatthesudburyneutrinoobservatory AT beiere electronantineutrinosearchatthesudburyneutrinoobservatory AT bellerivea electronantineutrinosearchatthesudburyneutrinoobservatory AT billers electronantineutrinosearchatthesudburyneutrinoobservatory AT bogerj electronantineutrinosearchatthesudburyneutrinoobservatory AT boulaymg electronantineutrinosearchatthesudburyneutrinoobservatory AT bowlest electronantineutrinosearchatthesudburyneutrinoobservatory AT brices electronantineutrinosearchatthesudburyneutrinoobservatory AT bullardt electronantineutrinosearchatthesudburyneutrinoobservatory AT chany electronantineutrinosearchatthesudburyneutrinoobservatory AT chenm electronantineutrinosearchatthesudburyneutrinoobservatory AT chenx electronantineutrinosearchatthesudburyneutrinoobservatory AT clevelandb electronantineutrinosearchatthesudburyneutrinoobservatory AT coxg electronantineutrinosearchatthesudburyneutrinoobservatory AT daix electronantineutrinosearchatthesudburyneutrinoobservatory AT dalnokiveressf electronantineutrinosearchatthesudburyneutrinoobservatory AT doep electronantineutrinosearchatthesudburyneutrinoobservatory AT dosanjhr electronantineutrinosearchatthesudburyneutrinoobservatory AT doucasg electronantineutrinosearchatthesudburyneutrinoobservatory AT dragowskymr electronantineutrinosearchatthesudburyneutrinoobservatory AT dubac electronantineutrinosearchatthesudburyneutrinoobservatory AT duncanf electronantineutrinosearchatthesudburyneutrinoobservatory AT dunfordm electronantineutrinosearchatthesudburyneutrinoobservatory AT dunmorej electronantineutrinosearchatthesudburyneutrinoobservatory |