Measurement of atmospheric neutrino oscillations with IceCube

Measurement of atmospheric neutrino oscillations with IceCube

We present the first statistically significant detection of neutrino oscillations in the high-energy regime (> 20 GeV) from an analysis of IceCube Neutrino Observatory data collected in 2010 and 2011. This measurement is made possible by the low-energy threshold of the DeepCore detector (similar...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Aartsen, MG, Abbasi, R, Ackermann, M, Altmann, D, Auffenberg, J, Bai, X, Tjus, JB, Becker, KH, Bell, M, Berdermann, J, Berley, D, Bernhard, A, Binder, G, Bissok, M, Blumenthal, J, Boser, S, Casey, J, Christov, A, Clevermann, F, Coenders, S, Cowen, DF, Silva, AHC, Desiati, P, DeYoung, T, Diaz-Velez, JC, Eberhardt, B, Ellsworth, RW, Euler, S, Fazely, AR, Fedynitch, A, Filimonov, K, Fischer-Wasels, T, Franke, R, Gora, D, Grandmont, DT, Gross, A, Haj Ismail, Abd Al Karim, Halzen, F, Hanson, K, Hickford, S, Hoffmann, R, Homeier, A, Huelsnitz, W, Ishihara, A, Jagielski, K, Jlelati, Ola, Karg, T, Kislat, F, Kohnen, G, Kowalski, M, Krings, K, Kunnen, J, Kurahashi, N, Labare, Mathieu, Landsman, H, Lunemann, J, Maruyama, R, Mase, K, McNally, F, Merck, M, Miarecki, S, Middell, E, Milke, N, Niederhausen, H, Obertacke, A, Olivas, A, Palazzo, A, Paul, L, de los Heros, CP, Radel, L, Rameez, M, Rhode, W, Rott, C, Ryckbosch, Dirk, Santander, M, Schatto, K, Schmidt, T, Schoneberg, S, Seckel, D, Smith, MWE, Soldin, D, Spiczak, GM, Stamatikos, M, Stoss, A, Strom, R, Tesic, G, Toale, PA, Toscano, S, van Eijndhoven, N, Vehring, M, Wallraff, M, Wellons, M, Williams, DR, Wissing, H, Wolf, M, Xu, C, Xu, DL, Xu, XW, Yoshida, S, Zierke, S
Format: Artikel
Sprache:eng
Schlagworte:
Physics and Astronomy
SYSTEM
TELESCOPE
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We present the first statistically significant detection of neutrino oscillations in the high-energy regime (> 20 GeV) from an analysis of IceCube Neutrino Observatory data collected in 2010 and 2011. This measurement is made possible by the low-energy threshold of the DeepCore detector (similar to 20 GeV) and benefits from the use of the IceCube detector as a veto against cosmic-ray-induced muon background. The oscillation signal was detected within a low-energy muon neutrino sample (20-100 GeV) extracted from data collected by DeepCore. A high-energy muon neutrino sample (100 GeV-10 TeV) was extracted from IceCube data to constrain systematic uncertainties. The disappearance of low-energy upward-going muon neutrinos was observed, and the nonoscillation hypothesis is rejected with more than 5 sigma significance. In a two-neutrino flavor formalism, our data are best described by the atmospheric neutrino oscillation parameters vertical bar Delta m(32)(2)vertical bar = (2.3(-0.5)(+0.6)) x 10(-3) eV(2) and sin(2) (2 theta(23)) > 0.93, and maximum mixing is favored.
ISSN:0031-9007