First observation of PeV-energy neutrinos with IceCube.
نویسندگان
- M G Aartsen
- R Abbasi
- Y Abdou
- M Ackermann
- J Adams
- J A Aguilar
- M Ahlers
- D Altmann
- J Auffenberg
- X Bai
- M Baker
- S W Barwick
- V Baum
- R Bay
- J J Beatty
- S Bechet
- J Becker Tjus
- K-H Becker
- M Bell
- M L Benabderrahmane
- S BenZvi
- J Berdermann
- P Berghaus
- D Berley
- E Bernardini
- A Bernhard
- D Bertrand
- D Z Besson
- G Binder
- D Bindig
- M Bissok
- E Blaufuss
- J Blumenthal
- D J Boersma
- S Bohaichuk
- C Bohm
- D Bose
- S Böser
- O Botner
- L Brayeur
- H-P Bretz
- A M Brown
- R Bruijn
- J Brunner
- M Carson
- J Casey
- M Casier
- D Chirkin
- A Christov
- B Christy
- K Clark
- F Clevermann
- S Coenders
- S Cohen
- D F Cowen
- A H Cruz Silva
- M Danninger
- J Daughhetee
- J C Davis
- C De Clercq
- S De Ridder
- P Desiati
- M de With
- T DeYoung
- J C Díaz-Vélez
- M Dunkman
- R Eagan
- B Eberhardt
- J Eisch
- R W Ellsworth
- S Euler
- P A Evenson
- O Fadiran
- A R Fazely
- A Fedynitch
- J Feintzeig
- T Feusels
- K Filimonov
- C Finley
- T Fischer-Wasels
- S Flis
- A Franckowiak
- R Franke
- K Frantzen
- T Fuchs
- T K Gaisser
- J Gallagher
- L Gerhardt
- L Gladstone
- T Glüsenkamp
- A Goldschmidt
- G Golup
- J G Gonzalez
- J A Goodman
- D Góra
- D Grant
- A Groß
- M Gurtner
- C Ha
- A Haj Ismail
- P Hallen
- A Hallgren
- F Halzen
- K Hanson
- D Heereman
- D Heinen
- K Helbing
- R Hellauer
- S Hickford
- G C Hill
- K D Hoffman
- R Hoffmann
- A Homeier
- K Hoshina
- W Huelsnitz
- P O Hulth
- K Hultqvist
- S Hussain
- A Ishihara
- E Jacobi
- J Jacobsen
- K Jagielski
- G S Japaridze
- K Jero
- O Jlelati
- B Kaminsky
- A Kappes
- T Karg
- A Karle
- J L Kelley
- J Kiryluk
- F Kislat
- J Kläs
- S R Klein
- J-H Köhne
- G Kohnen
- H Kolanoski
- L Köpke
- C Kopper
- S Kopper
- D J Koskinen
- M Kowalski
- M Krasberg
- K Krings
- G Kroll
- J Kunnen
- N Kurahashi
- T Kuwabara
- M Labare
- H Landsman
- M J Larson
- M Lesiak-Bzdak
- M Leuermann
- J Leute
- J Lünemann
- J Madsen
- R Maruyama
- K Mase
- H S Matis
- F McNally
- K Meagher
- M Merck
- P Mészáros
- T Meures
- S Miarecki
- E Middell
- N Milke
- J Miller
- L Mohrmann
- T Montaruli
- R Morse
- R Nahnhauer
- U Naumann
- H Niederhausen
- S C Nowicki
- D R Nygren
- A Obertacke
- S Odrowski
- A Olivas
- M Olivo
- A O'Murchadha
- L Paul
- J A Pepper
- C Pérez de los Heros
- C Pfendner
- D Pieloth
- E Pinat
- N Pirk
- J Posselt
- P B Price
- G T Przybylski
- L Rädel
- M Rameez
- K Rawlins
- P Redl
- R Reimann
- E Resconi
- W Rhode
- M Ribordy
- M Richman
- B Riedel
- J P Rodrigues
- C Rott
- T Ruhe
- B Ruzybayev
- D Ryckbosch
- S M Saba
- T Salameh
- H-G Sander
- M Santander
- S Sarkar
- K Schatto
- M Scheel
- F Scheriau
- T Schmidt
- M Schmitz
- S Schoenen
- S Schöneberg
- A Schönwald
- A Schukraft
- L Schulte
- O Schulz
- D Seckel
- Y Sestayo
- S Seunarine
- C Sheremata
- M W E Smith
- M Soiron
- D Soldin
- G M Spiczak
- C Spiering
- M Stamatikos
- T Stanev
- A Stasik
- T Stezelberger
- R G Stokstad
- A Stößl
- E A Strahler
- R Ström
- G W Sullivan
- H Taavola
- I Taboada
- A Tamburro
- S Ter-Antonyan
- G Tešić
- S Tilav
- P A Toale
- S Toscano
- M Usner
- D van der Drift
- N van Eijndhoven
- A Van Overloop
- J van Santen
- M Vehring
- M Voge
- M Vraeghe
- C Walck
- T Waldenmaier
- M Wallraff
- R Wasserman
- Ch Weaver
- M Wellons
- C Wendt
- S Westerhoff
- N Whitehorn
- K Wiebe
- C H Wiebusch
- D R Williams
- H Wissing
- M Wolf
- T R Wood
- K Woschnagg
- C Xu
- D L Xu
- X W Xu
- J P Yanez
- G Yodh
- S Yoshida
- P Zarzhitsky
- J Ziemann
- S Zierke
- A Zilles
- M Zoll
چکیده
We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04±0.16 and 1.14±0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current ν(e,μ,τ) (ν(e,μ,τ)) or charged-current ν(e) (ν(e)) interactions within the IceCube detector. The events were discovered in a search for ultrahigh energy neutrinos using data corresponding to 615.9 days effective live time. The expected number of atmospheric background is 0.082±0.004(stat)(-0.057)(+0.041)(syst). The probability of observing two or more candidate events under the atmospheric background-only hypothesis is 2.9×10(-3) (2.8σ) taking into account the uncertainty on the expected number of background events. These two events could be a first indication of an astrophysical neutrino flux; the moderate significance, however, does not permit a definitive conclusion at this time.
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ورودعنوان ژورنال:
- Physical review letters
دوره 111 2 شماره
صفحات -
تاریخ انتشار 2013