First observation of PeV-energy neutrinos with IceCube

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

doi:10.1103/PhysRevLett.111.021103

First observation of PeV-energy neutrinos with IceCube

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. BenabderrahmaneS. 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

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English (US)
Article number	021103
Journal	Physical Review Letters
Volume	111
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.111.021103
State	Published - Jul 8 2013

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.111.021103

Cite this

Aartsen, M. G., Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Altmann, D., Auffenberg, J., Bai, X., Baker, M., Barwick, S. W., Baum, V., Bay, R., Beatty, J. J., Bechet, S., Becker Tjus, J., Becker, K. H., Bell, M., ... Zoll, M. (2013). First observation of PeV-energy neutrinos with IceCube. Physical Review Letters, 111(2), Article 021103. https://doi.org/10.1103/PhysRevLett.111.021103

Aartsen, MG, Abbasi, R, Abdou, Y, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Altmann, D, Auffenberg, J, Bai, X, Baker, M, Barwick, SW, Baum, V, Bay, R, Beatty, JJ, Bechet, S, Becker Tjus, J, Becker, KH, Bell, M, Benabderrahmane, ML, Benzvi, S, Berdermann, J, Berghaus, P, Berley, D, Bernardini, E, Bernhard, A, Bertrand, D, Besson, DZ, Binder, G, Bindig, D, Bissok, M, Blaufuss, E, Blumenthal, J, Boersma, DJ, Bohaichuk, S, Bohm, C, Bose, D, Böser, S, Botner, O, Brayeur, L, Bretz, HP, Brown, AM, Bruijn, R, Brunner, J, Carson, M, Casey, J, Casier, M, Chirkin, D, Christov, A, Christy, B, Clark, K, Clevermann, F, Coenders, S, Cohen, S, Cowen, DF, Cruz Silva, AH, Danninger, M, Daughhetee, J, Davis, JC, De Clercq, C, De Ridder, S, Desiati, P, De With, M, Deyoung, T, Díaz-Vélez, JC, Dunkman, M, Eagan, R, Eberhardt, B, Eisch, J, Ellsworth, RW, Euler, S, Evenson, PA, Fadiran, O, Fazely, AR, Fedynitch, A, Feintzeig, J, Feusels, T, Filimonov, K, Finley, C, Fischer-Wasels, T, Flis, S, Franckowiak, A, Franke, R, Frantzen, K, Fuchs, T, Gaisser, TK, Gallagher, J, Gerhardt, L, Gladstone, L, Glüsenkamp, T, Goldschmidt, A, Golup, G, Gonzalez, JG, Goodman, JA, Góra, D, Grant, D, Groß, A, Gurtner, M, Ha, C, Haj Ismail, A, Hallen, P, Hallgren, A, Halzen, F, Hanson, K, Heereman, D, Heinen, D, Helbing, K, Hellauer, R, Hickford, S, Hill, GC, Hoffman, KD, Hoffmann, R, Homeier, A, Hoshina, K, Huelsnitz, W, Hulth, PO, Hultqvist, K, Hussain, S, Ishihara, A, Jacobi, E, Jacobsen, J, Jagielski, K, Japaridze, GS, Jero, K, Jlelati, O, Kaminsky, B, Kappes, A, Karg, T, Karle, A, Kelley, JL, Kiryluk, J, Kislat, F, Kläs, J, Klein, SR, Köhne, JH, Kohnen, G, Kolanoski, H, Köpke, L, Kopper, C, Kopper, S, Koskinen, DJ, Kowalski, M, Krasberg, M, Krings, K, Kroll, G, Kunnen, J, Kurahashi, N, Kuwabara, T, Labare, M, Landsman, H, Larson, MJ, Lesiak-Bzdak, M, Leuermann, M, Leute, J, Lünemann, J, Madsen, J, Maruyama, R, Mase, K, Matis, HS, McNally, F, Meagher, K, Merck, M, Mészáros, P, Meures, T, Miarecki, S, Middell, E, Milke, N, Miller, J, Mohrmann, L, Montaruli, T, Morse, R, Nahnhauer, R, Naumann, U, Niederhausen, H, Nowicki, SC, Nygren, DR, Obertacke, A, Odrowski, S, Olivas, A, Olivo, M, O'Murchadha, A, Paul, L, Pepper, JA, Pérez De Los Heros, C, Pfendner, C, Pieloth, D, Pinat, E, Pirk, N, Posselt, J, Price, PB, Przybylski, GT, Rädel, L, Rameez, M, Rawlins, K, Redl, P, Reimann, R, Resconi, E, Rhode, W, Ribordy, M, Richman, M, Riedel, B, Rodrigues, JP, Rott, C, Ruhe, T, Ruzybayev, B, Ryckbosch, D, Saba, SM, Salameh, T, Sander, HG, Santander, M, Sarkar, S, Schatto, K, Scheel, M, Scheriau, F, Schmidt, T, Schmitz, M, Schoenen, S, Schöneberg, S, Schönwald, A, Schukraft, A, Schulte, L, Schulz, O, Seckel, D, Sestayo, Y, Seunarine, S, Sheremata, C, Smith, MWE, Soiron, M, Soldin, D, Spiczak, GM, Spiering, C, Stamatikos, M, Stanev, T, Stasik, A, Stezelberger, T, Stokstad, RG, Stößl, A, Strahler, EA, Ström, R, Sullivan, GW, Taavola, H, Taboada, I, Tamburro, A, Ter-Antonyan, S, Tešić, G, Tilav, S, Toale, PA, Toscano, S, Usner, M, Van Der Drift, D, Van Eijndhoven, N, Van Overloop, A, Van Santen, J, Vehring, M, Voge, M, Vraeghe, M, Walck, C, Waldenmaier, T, Wallraff, M, Wasserman, R, Weaver, C, Wellons, M, Wendt, C, Westerhoff, S, Whitehorn, N, Wiebe, K, Wiebusch, CH, Williams, DR, Wissing, H, Wolf, M, Wood, TR, Woschnagg, K, Xu, C, Xu, DL, Xu, XW, Yanez, JP, Yodh, G, Yoshida, S, Zarzhitsky, P, Ziemann, J, Zierke, S, Zilles, A & Zoll, M 2013, 'First observation of PeV-energy neutrinos with IceCube', Physical Review Letters, vol. 111, no. 2, 021103. https://doi.org/10.1103/PhysRevLett.111.021103

@article{90de5d69ba094b5792629ca768bcda42,

title = "First observation of PeV-energy neutrinos with IceCube",

abstract = "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 νe,μ,τ (ν{\= }e,μ,τ) or charged-current νe ({\=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.",

author = "Aartsen, {M. G.} and R. Abbasi and Y. Abdou and M. Ackermann and J. Adams and Aguilar, {J. A.} and M. Ahlers and D. Altmann and J. Auffenberg and X. Bai and M. Baker and Barwick, {S. W.} and V. Baum and R. Bay and Beatty, {J. J.} and S. Bechet and {Becker Tjus}, J. and Becker, {K. H.} and M. Bell and Benabderrahmane, {M. L.} and S. Benzvi and J. Berdermann and P. Berghaus and D. Berley and E. Bernardini and A. Bernhard and D. Bertrand and Besson, {D. Z.} and G. Binder and D. Bindig and M. Bissok and E. Blaufuss and J. Blumenthal and Boersma, {D. J.} and S. Bohaichuk and C. Bohm and D. Bose and S. B{\"o}ser and O. Botner and L. Brayeur and Bretz, {H. P.} and Brown, {A. M.} and R. Bruijn and J. Brunner and M. Carson and J. Casey and M. Casier and D. Chirkin and A. Christov and B. Christy and K. Clark and F. Clevermann and S. Coenders and S. Cohen and Cowen, {D. F.} and {Cruz Silva}, {A. H.} and M. Danninger and J. Daughhetee and Davis, {J. C.} and {De Clercq}, C. and {De Ridder}, S. and P. Desiati and {De With}, M. and T. Deyoung and D{\'i}az-V{\'e}lez, {J. C.} and M. Dunkman and R. Eagan and B. Eberhardt and J. Eisch and Ellsworth, {R. W.} and S. Euler and Evenson, {P. A.} and O. Fadiran and Fazely, {A. R.} and A. Fedynitch and J. Feintzeig and T. Feusels and K. Filimonov and C. Finley and T. Fischer-Wasels and S. Flis and A. Franckowiak and R. Franke and K. Frantzen and T. Fuchs and Gaisser, {T. K.} and J. Gallagher and L. Gerhardt and L. Gladstone and T. Gl{\"u}senkamp and A. Goldschmidt and G. Golup and Gonzalez, {J. G.} and Goodman, {J. A.} and D. G{\'o}ra and D. Grant and A. Gro{\ss} and M. Gurtner and C. Ha and {Haj Ismail}, A. and P. Hallen and A. Hallgren and F. Halzen and K. Hanson and D. Heereman and D. Heinen and K. Helbing and R. Hellauer and S. Hickford and Hill, {G. C.} and Hoffman, {K. D.} and R. Hoffmann and A. Homeier and K. Hoshina and W. Huelsnitz and Hulth, {P. O.} and K. Hultqvist and S. Hussain and A. Ishihara and E. Jacobi and J. Jacobsen and K. Jagielski and Japaridze, {G. S.} and K. Jero and O. Jlelati and B. Kaminsky and A. Kappes and T. Karg and A. Karle and Kelley, {J. L.} and J. Kiryluk and F. Kislat and J. Kl{\"a}s and Klein, {S. R.} and K{\"o}hne, {J. H.} and G. Kohnen and H. Kolanoski and L. K{\"o}pke and C. Kopper and S. Kopper and Koskinen, {D. J.} and M. Kowalski and M. Krasberg and K. Krings and G. Kroll and J. Kunnen and N. Kurahashi and T. Kuwabara and M. Labare and H. Landsman and Larson, {M. J.} and M. Lesiak-Bzdak and M. Leuermann and J. Leute and J. L{\"u}nemann and J. Madsen and R. Maruyama and K. Mase and Matis, {H. S.} and F. McNally and K. Meagher and M. Merck and P. M{\'e}sz{\'a}ros and T. Meures and S. Miarecki and E. Middell and N. Milke and J. Miller and L. Mohrmann and T. Montaruli and R. Morse and R. Nahnhauer and U. Naumann and H. Niederhausen and Nowicki, {S. C.} and Nygren, {D. R.} and A. Obertacke and S. Odrowski and A. Olivas and M. Olivo and A. O'Murchadha and L. Paul and Pepper, {J. A.} and {P{\'e}rez De Los Heros}, C. and C. Pfendner and D. Pieloth and E. Pinat and N. Pirk and J. Posselt and Price, {P. B.} and Przybylski, {G. T.} and L. R{\"a}del and M. Rameez and K. Rawlins and P. Redl and R. Reimann and E. Resconi and W. Rhode and M. Ribordy and M. Richman and B. Riedel and Rodrigues, {J. P.} and C. Rott and T. Ruhe and B. Ruzybayev and D. Ryckbosch and Saba, {S. M.} and T. Salameh and Sander, {H. G.} and M. Santander and S. Sarkar and K. Schatto and M. Scheel and F. Scheriau and T. Schmidt and M. Schmitz and S. Schoenen and S. Sch{\"o}neberg and A. Sch{\"o}nwald and A. Schukraft and L. Schulte and O. Schulz and D. Seckel and Y. Sestayo and S. Seunarine and C. Sheremata and Smith, {M. W.E.} and M. Soiron and D. Soldin and Spiczak, {G. M.} and C. Spiering and M. Stamatikos and T. Stanev and A. Stasik and T. Stezelberger and Stokstad, {R. G.} and A. St{\"o}{\ss}l and Strahler, {E. A.} and R. Str{\"o}m and Sullivan, {G. W.} and H. Taavola and I. Taboada and A. Tamburro and S. Ter-Antonyan and G. Te{\v s}i{\'c} and S. Tilav and Toale, {P. A.} and S. Toscano and M. Usner and {Van Der Drift}, D. and {Van Eijndhoven}, N. and {Van Overloop}, A. and {Van Santen}, J. and M. Vehring and M. Voge and M. Vraeghe and C. Walck and T. Waldenmaier and M. Wallraff and R. Wasserman and Ch Weaver and M. Wellons and C. Wendt and S. Westerhoff and N. Whitehorn and K. Wiebe and Wiebusch, {C. H.} and Williams, {D. R.} and H. Wissing and M. Wolf and Wood, {T. R.} and K. Woschnagg and C. Xu and Xu, {D. L.} and Xu, {X. W.} and Yanez, {J. P.} and G. Yodh and S. Yoshida and P. Zarzhitsky and J. Ziemann and S. Zierke and A. Zilles and M. Zoll",

year = "2013",

month = jul,

day = "8",

doi = "10.1103/PhysRevLett.111.021103",

language = "English (US)",

volume = "111",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - First observation of PeV-energy neutrinos with IceCube

AU - Aartsen, M. G.

AU - Abbasi, R.

AU - Abdou, Y.

AU - Ackermann, M.

AU - Adams, J.

AU - Aguilar, J. A.

AU - Ahlers, M.

AU - Altmann, D.

AU - Auffenberg, J.

AU - Bai, X.

AU - Baker, M.

AU - Barwick, S. W.

AU - Baum, V.

AU - Bay, R.

AU - Beatty, J. J.

AU - Bechet, S.

AU - Becker Tjus, J.

AU - Becker, K. H.

AU - Bell, M.

AU - Benabderrahmane, M. L.

AU - Benzvi, S.

AU - Berdermann, J.

AU - Berghaus, P.

AU - Berley, D.

AU - Bernardini, E.

AU - Bernhard, A.

AU - Bertrand, D.

AU - Besson, D. Z.

AU - Binder, G.

AU - Bindig, D.

AU - Bissok, M.

AU - Blaufuss, E.

AU - Blumenthal, J.

AU - Boersma, D. J.

AU - Bohaichuk, S.

AU - Bohm, C.

AU - Bose, D.

AU - Böser, S.

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PY - 2013/7/8

Y1 - 2013/7/8

N2 - 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 νe,μ,τ (ν ̄e,μ,τ) or charged-current νe (ν̄e) 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.

AB - 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 νe,μ,τ (ν ̄e,μ,τ) or charged-current νe (ν̄e) 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.

UR - http://www.scopus.com/inward/record.url?scp=84880116281&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880116281&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.111.021103

DO - 10.1103/PhysRevLett.111.021103

M3 - Article

AN - SCOPUS:84880116281

SN - 0031-9007

VL - 111

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 021103

ER -

First observation of PeV-energy neutrinos with IceCube

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