First search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detector
We report on the first search for atmospheric and for diffuse astrophysical neutrino-induced showers (cascades) in the IceCube detector using 257 days of data collected in the year 2007-2008 with 22 strings active. A total of 14 events with energies above 16 TeV remained after event selections in th...
| Autori principali: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Natura: | Journal article |
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2011
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| _version_ | 1826258958711521280 |
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| author | Collaboration, I Abbasi, R Abdou, Y Abu-Zayyad, T Adams, J Aguilar, J Ahlers, M Andeen, K Auffenberg, J Bai, X Baker, M Barwick, S Bay, R Alba, J Beattie, K Beatty, J Bechet, S Becker, J Becker, K Benabderrahmane, M BenZvi, S Berdermann, J Berghaus, P Berley, D Bernardini, E |
| author_facet | Collaboration, I Abbasi, R Abdou, Y Abu-Zayyad, T Adams, J Aguilar, J Ahlers, M Andeen, K Auffenberg, J Bai, X Baker, M Barwick, S Bay, R Alba, J Beattie, K Beatty, J Bechet, S Becker, J Becker, K Benabderrahmane, M BenZvi, S Berdermann, J Berghaus, P Berley, D Bernardini, E |
| author_sort | Collaboration, I |
| collection | OXFORD |
| description | We report on the first search for atmospheric and for diffuse astrophysical neutrino-induced showers (cascades) in the IceCube detector using 257 days of data collected in the year 2007-2008 with 22 strings active. A total of 14 events with energies above 16 TeV remained after event selections in the diffuse analysis, with an expected total background contribution of $8.3\pm 3.6$. At 90% confidence we set an upper limit of $E^2\Phi_{90%CL}<3.6\times10^{-7} GeV \cdot cm^{-2} \cdot s^{-1}\cdot sr^{-1} $ on the diffuse flux of neutrinos of all flavors in the energy range between 24 TeV and 6.6 PeV assuming that $\Phi \propto E^{-2}$ and that the flavor composition of the $\nu_e : \nu_\mu : \nu_\tau$ flux is $1 : 1 : 1$ at the Earth. The atmospheric neutrino analysis was optimized for lower energies. A total of 12 events were observed with energies above 5 TeV. The observed number of events is consistent with the expected background, within the uncertainties. |
| first_indexed | 2024-03-06T18:42:17Z |
| format | Journal article |
| id | oxford-uuid:0d4e34c2-5f29-4cf9-ac54-73265aa593f6 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:42:17Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:0d4e34c2-5f29-4cf9-ac54-73265aa593f62022-03-26T09:39:49ZFirst search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detectorJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0d4e34c2-5f29-4cf9-ac54-73265aa593f6Symplectic Elements at Oxford2011Collaboration, IAbbasi, RAbdou, YAbu-Zayyad, TAdams, JAguilar, JAhlers, MAndeen, KAuffenberg, JBai, XBaker, MBarwick, SBay, RAlba, JBeattie, KBeatty, JBechet, SBecker, JBecker, KBenabderrahmane, MBenZvi, SBerdermann, JBerghaus, PBerley, DBernardini, EWe report on the first search for atmospheric and for diffuse astrophysical neutrino-induced showers (cascades) in the IceCube detector using 257 days of data collected in the year 2007-2008 with 22 strings active. A total of 14 events with energies above 16 TeV remained after event selections in the diffuse analysis, with an expected total background contribution of $8.3\pm 3.6$. At 90% confidence we set an upper limit of $E^2\Phi_{90%CL}<3.6\times10^{-7} GeV \cdot cm^{-2} \cdot s^{-1}\cdot sr^{-1} $ on the diffuse flux of neutrinos of all flavors in the energy range between 24 TeV and 6.6 PeV assuming that $\Phi \propto E^{-2}$ and that the flavor composition of the $\nu_e : \nu_\mu : \nu_\tau$ flux is $1 : 1 : 1$ at the Earth. The atmospheric neutrino analysis was optimized for lower energies. A total of 12 events were observed with energies above 5 TeV. The observed number of events is consistent with the expected background, within the uncertainties. |
| spellingShingle | Collaboration, I Abbasi, R Abdou, Y Abu-Zayyad, T Adams, J Aguilar, J Ahlers, M Andeen, K Auffenberg, J Bai, X Baker, M Barwick, S Bay, R Alba, J Beattie, K Beatty, J Bechet, S Becker, J Becker, K Benabderrahmane, M BenZvi, S Berdermann, J Berghaus, P Berley, D Bernardini, E First search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detector |
| title | First search for atmospheric and extraterrestrial neutrino-induced
cascades with the IceCube detector |
| title_full | First search for atmospheric and extraterrestrial neutrino-induced
cascades with the IceCube detector |
| title_fullStr | First search for atmospheric and extraterrestrial neutrino-induced
cascades with the IceCube detector |
| title_full_unstemmed | First search for atmospheric and extraterrestrial neutrino-induced
cascades with the IceCube detector |
| title_short | First search for atmospheric and extraterrestrial neutrino-induced
cascades with the IceCube detector |
| title_sort | first search for atmospheric and extraterrestrial neutrino induced cascades with the icecube detector |
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