Multiyear search for a diffuse flux of muon neutrinos with AMANDA-II

A Achterberg,D Rutledge,S Sarkar,P Herquet,Y Hasegawa,K Han,J Lünemann,S Razzaque,K D Hoffman,H Geenen,T Montaruli,H S Matis,D R Nygren,P B Price,T Mccauley,A Morey,J Ahrens,M R Duvoort,G S Japaridze,A J Smith,H Leich,M Kowalski,K Hoshina,O Fadiran,D Hardtke,S M Movit,N Van Eijndhoven,R Lauer,T Hauschildt,S Hundertmark,T Stanev,J Pretz,S R Klein,A Van Overloop,R Gozzini,L Thollander,J Braun,C Finley,T Karg,W R Edwards,K Satalecka,J Vandenbroucke,A Tepe,S Stoyanov,I Liubarsky,M Solarz,K.-H Becker,M V D’Agostino,R M Gunasingha,P A Toale,L Köpke,S Schlenstedt,A Ishihara,R Morse,A R Fazely,J Jacobsen,M Inaba,C Wiedemann,T K Gaisser,M Labare,K Mase,A Olivas,B D Fox,S Tilav,D F Cowen,R W Ellsworth,S H Seo,D Pieloth,A Mokhtarani,K Woschnagg,C H Wiebusch,P Nießen,M Tluczykont,K.-H Sulanke,H Miyamoto,K Hanson,D Seckel,A Rizzo,C T Day,I Taboada,F Rothmaier,G Wikström,S Seunarine,H Johansson,B Voigt,T Messarius,J Bolmont,M Hellwig,C Rott,M Gurtner,T Castermans,A Goldschmidt,D Ryckbosch,P Berghaus,A Piegsa,J W Nam,G C Hill,C Ha,B Christy,H Waldmann,E A Strahler,M Krasberg,D J Boersma,K Rawlins,J L Kelley,D Schneider,C Wendt,G W Sullivan,S Böser,T Stezelberger,J Madsen,K Filimonov,R Hardtke,D Chirkin,O Tarasova,P O Hulth,D Berley,W Rhode,S Robbins,C De Clercq,J Auffenberg,S Klepser,S Grullon,P Desiati,D R Williams,J Eisch,A Hallgren,R Bay,H Landsman,B Hommez,D Hays,A Franckowiak,H Wissing,S Patton,X W Xu,L Demirörs,P A Evenson,J K Becker,J Heise,K Andeen,A Groß,M Ackermann,T Becka,T Schmidt,R Porrata,J.-P Hülß,O Botner,D Tosi,T Straszheim,K Beattie,M M Foerster,G T Przybylski,T Burgess,A Meli,T J Sumner,R Ganugapati,H Kolanoski,S W Barwick,R Ehrlich,E Resconi,J Lundberg,R Wischnewski,E Bernardini,T Kowarik,T Deyoung,G Kohnen,R G Stokstad,C Walck,Y Sestayo,A Kappes,A C Pohl,B Semburg,J Clem,M Stamatikos,K Helbing,J E Hart,E Blaufuss,A Karle,A Silvestri,A Bouchta,J Dreyer,M Ribordy,J Hodges,D Hubert,X Bai,B Hughey,R Nahnhauer,F Halzen,M C Stoufer,J A Goodman,N Kitamura,V Viscomi,R Maruyama,K Hultqvist,K Münich,T Griesel,C Spiering,H Kawai,P Mészáros,G M Spiczak,L Gerhardt,D Turčan,B Baret,F Descamps,G Yodh,J Joseph ,Fabian Kislat ,J Dumm ,John S Gallagher ,H G Sander ,D Besson ,K Kuêhn ,Daniel Bertrand ,Carlos Peña-Garay ,Cui-Ying Song ,Juan Carlos Díaz–Vélez ,K.‐H Kampert ,C Mcparland ,Wolfgang Wagner ,Robert Franke ,J H Adams ,Peter M Roth ,Dominik Leier ,C Böhm ,Aaron Jones ,H Öğelman ,Michael Walter ,C Pérez Los De Heros ,Y R Wang ,Anna Davour ,Shigeru Yoshida ,J Sopher ,J.d Zornoza

doi:10.1103/physrevd.76.042008

Abstract

A search for TeV-PeV muon neutrinos from unresolved sources was performed on AMANDA-II data collected between 2000 and 2003 with an equivalent live time of 807 days. This diffuse analysis sought to find an extraterrestrial neutrino flux from sources with nonthermal components. The signal is expected to have a harder spectrum than the atmospheric muon and neutrino backgrounds. Since no excess of events was seen in the data over the expected background, an upper limit of E-2 Phi(90%C.L.)< 7.4x10(-8) GeV cm(-2) s(-1) sr(-1) is placed on the diffuse flux of muon neutrinos with a Phi proportional to E-2 spectrum in the energy range 16 TeV to 2.5 PeV. This is currently the most sensitive Phi proportional to E-2 diffuse astrophysical neutrino limit. We also set upper limits for astrophysical and prompt neutrino models, all of which have spectra different from Phi proportional to E-2.

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