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21 results on '"Meures, T."'

1. eV-Scale Sterile Neutrino Search Using Eight Years of Atmospheric Muon Neutrino Data from the IceCube Neutrino Observatory.

Author: Aartsen MG, Abbasi R, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Alispach C, Amin NM, Andeen K, Anderson T, Ansseau I, Anton G, Argüelles C, Auffenberg J, Axani S, Bagherpour H, Bai X, Balagopal A, Barbano A, Barwick SW, Bastian B, Basu V, Baum V, Baur S, Bay R, Beatty JJ, Becker KH, Becker Tjus J, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Böser S, Botner O, Böttcher J, Bourbeau E, Bourbeau J, Bradascio F, Braun J, Bron S, Brostean-Kaiser J, Burgman A, Buscher J, Busse RS, Carver T, Chen C, Cheung E, Chirkin D, Choi S, Clark BA, Clark K, Classen L, Coleman A, Collin GH, Conrad JM, Coppin P, Correa P, Cowen DF, Cross R, Dave P, De Clercq C, DeLaunay JJ, Dembinski H, Deoskar K, De Ridder S, Desai A, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Dharani S, Diaz A, Díaz-Vélez JC, Dujmovic H, Dunkman M, DuVernois MA, Dvorak E, Ehrhardt T, Eller P, Engel R, Evenson PA, Fahey S, Fazely AR, Fedynitch A, Felde J, Fienberg AT, Filimonov K, Finley C, Fox D, Franckowiak A, Friedman E, Fritz A, Gaisser TK, Gallagher J, Ganster E, Garrappa S, Gerhardt L, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Grégoire T, Griffith Z, Griswold S, Günder M, Gündüz M, Haack C, Hallgren A, Halliday R, Halve L, Halzen F, Hanson K, Hardin J, Haungs A, Hauser S, Hebecker D, Heereman D, Heix P, Helbing K, Hellauer R, Henningsen F, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hoinka T, Hokanson-Fasig B, Hoshina K, Huang F, Huber M, Huber T, Hultqvist K, Hünnefeld M, Hussain R, In S, Iovine N, Ishihara A, Jansson M, Japaridze GS, Jeong M, Jones BJP, Jonske F, Joppe R, Kang D, Kang W, Kappes A, Kappesser D, Karg T, Karl M, Karle A, Katz U, Kauer M, Kellermann M, Kelley JL, Kheirandish A, Kim J, Kintscher T, Kiryluk J, Kittler T, Klein SR, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Koundal P, Kowalski M, Krings K, Krückl G, Kulacz N, Kurahashi N, Kyriacou A, Lanfranchi JL, Larson MJ, Lauber F, Lazar JP, Leonard K, Leszczyńska A, Li Y, Liu QR, Lohfink E, Lozano Mariscal CJ, Lu L, Lucarelli F, Ludwig A, Lünemann J, Luszczak W, Lyu Y, Ma WY, Madsen J, Maggi G, Mahn KBM, Makino Y, Mallik P, Mancina S, Mariş IC, Maruyama R, Mase K, Maunu R, McNally F, Meagher K, Medici M, Medina A, Meier M, Meighen-Berger S, Merz J, Meures T, Micallef J, Mockler D, Momenté G, Montaruli T, Moore RW, Morse R, Moulai M, Muth P, Nagai R, Naumann U, Neer G, Nguyen LV, Niederhausen H, Nisa MU, Nowicki SC, Nygren DR, Obertacke Pollmann A, Oehler M, Olivas A, O'Murchadha A, O'Sullivan E, Palczewski T, Pandya H, Pankova DV, Park N, Parker GK, Paudel EN, Peiffer P, Pérez de Los Heros C, Philippen S, Pieloth D, Pieper S, Pinat E, Pizzuto A, Plum M, Popovych Y, Porcelli A, Prado Rodriguez M, Price PB, Przybylski GT, Raab C, Raissi A, Rameez M, Rauch L, Rawlins K, Rea IC, Rehman A, Reimann R, Relethford B, Renschler M, Renzi G, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk Cantu D, Safa I, Sanchez Herrera SE, Sandrock A, Sandroos J, Santander M, Sarkar S, Sarkar S, Satalecka K, Scharf M, Schaufel M, Schieler H, Schlunder P, Schmidt T, Schneider A, Schneider J, Schröder FG, Schumacher L, Sclafani S, Seckel D, Seunarine S, Shefali S, Silva M, Smithers B, Snihur R, Soedingrekso J, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stamatikos M, Stanev T, Stein R, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Strotjohann NL, Stürwald T, Stuttard T, Sullivan GW, Taboada I, Tenholt F, Ter-Antonyan S, Terliuk A, Tilav S, Tollefson K, Tomankova L, Tönnis C, Toscano S, Tosi D, Trettin A, Tselengidou M, Tung CF, Turcati A, Turcotte R, Turley CF, Ty B, Unger E, Unland Elorrieta MA, Usner M, Vandenbroucke J, Van Driessche W, van Eijk D, van Eijndhoven N, Vannerom D, van Santen J, Verpoest S, Vraeghe M, Walck C, Wallace A, Wallraff M, Watson TB, Weaver C, Weindl A, Weiss MJ, Weldert J, Wendt C, Werthebach J, Whelan BJ, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wills L, Wolf M, Wood TR, Woschnagg K, Wrede G, Wulff J, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Yuan T, Zhang Z, and Zöcklein M
Abstract: The results of a 3+1 sterile neutrino search using eight years of data from the IceCube Neutrino Observatory are presented. A total of 305 735 muon neutrino events are analyzed in reconstructed energy-zenith space to test for signatures of a matter-enhanced oscillation that would occur given a sterile neutrino state with a mass-squared differences between 0.01 and 100 eV^{2}. The best-fit point is found to be at sin^{2}(2θ_{24})=0.10 and Δm_{41}^{2}=4.5 eV^{2}, which is consistent with the no sterile neutrino hypothesis with a p value of 8.0%.
Published: 2020
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2. Characteristics of the Diffuse Astrophysical Electron and Tau Neutrino Flux with Six Years of IceCube High Energy Cascade Data.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Alispach C, Andeen K, Anderson T, Ansseau I, Anton G, Argüelles C, Auffenberg J, Axani S, Backes P, Bagherpour H, Bai X, Balagopal V A, Barbano A, Barwick SW, Bastian B, Baum V, Baur S, Bay R, Beatty JJ, Becker KH, Becker Tjus J, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Böser S, Botner O, Böttcher J, Bourbeau E, Bourbeau J, Bradascio F, Braun J, Bron S, Brostean-Kaiser J, Burgman A, Buscher J, Busse RS, Carver T, Chen C, Cheung E, Chirkin D, Choi S, Clark K, Classen L, Coleman A, Collin GH, Conrad JM, Coppin P, Correa P, Cowen DF, Cross R, Dave P, De Clercq C, DeLaunay JJ, Dembinski H, Deoskar K, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Diaz A, Díaz-Vélez JC, Dujmovic H, Dunkman M, Dvorak E, Eberhardt B, Ehrhardt T, Eller P, Engel R, Evenson PA, Fahey S, Fazely AR, Felde J, Filimonov K, Finley C, Fox D, Franckowiak A, Friedman E, Fritz A, Gaisser TK, Gallagher J, Ganster E, Garrappa S, Gerhardt L, Ghorbani K, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Grégoire T, Griffith Z, Griswold S, Günder M, Gündüz M, Haack C, Hallgren A, Halliday R, Halve L, Halzen F, Hanson K, Haungs A, Hebecker D, Heereman D, Heix P, Helbing K, Hellauer R, Henningsen F, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hoinka T, Hokanson-Fasig B, Hoshina K, Huang F, Huber M, Huber T, Hultqvist K, Hünnefeld M, Hussain R, In S, Iovine N, Ishihara A, Jansson M, Japaridze GS, Jeong M, Jero K, Jones BJP, Jonske F, Joppe R, Kang D, Kang W, Kappes A, Kappesser D, Karg T, Karl M, Karle A, Katz U, Kauer M, Kelley JL, Kheirandish A, Kim J, Kintscher T, Kiryluk J, Kittler T, Klein SR, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krings K, Krückl G, Kulacz N, Kurahashi N, Kyriacou A, Lanfranchi JL, Larson MJ, Lauber F, Lazar JP, Leonard K, Lesiak-Bzdak M, Leszczyńska A, Leuermann M, Liu QR, Lohfink E, Lozano Mariscal CJ, Lu L, Lucarelli F, Lünemann J, Luszczak W, Lyu Y, Ma WY, Madsen J, Maggi G, Mahn KBM, Makino Y, Mallik P, Mallot K, Mancina S, Mariş IC, Maruyama R, Mase K, Maunu R, McNally F, Meagher K, Medici M, Medina A, Meier M, Meighen-Berger S, Merino G, Meures T, Micallef J, Mockler D, Momenté G, Montaruli T, Moore RW, Morse R, Moulai M, Muth P, Nagai R, Naumann U, Neer G, Niederhausen H, Nisa MU, Nowicki SC, Nygren DR, Obertacke Pollmann A, Oehler M, Olivas A, O'Murchadha A, O'Sullivan E, Palczewski T, Pandya H, Pankova DV, Park N, Peiffer P, Pérez de Los Heros C, Philippen S, Pieloth D, Pieper S, Pinat E, Pizzuto A, Plum M, Porcelli A, Price PB, Przybylski GT, Raab C, Raissi A, Rameez M, Rauch L, Rawlins K, Rea IC, Rehman A, Reimann R, Relethford B, Renschler M, Renzi G, Resconi E, Rhode W, Richman M, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Safa I, Sanchez Herrera SE, Sandrock A, Sandroos J, Santander M, Sarkar S, Sarkar S, Satalecka K, Schaufel M, Schieler H, Schlunder P, Schmidt T, Schneider A, Schneider J, Schröder FG, Schumacher L, Sclafani S, Seckel D, Seunarine S, Shefali S, Silva M, Snihur R, Soedingrekso J, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stamatikos M, Stanev T, Stein R, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Strotjohann NL, Stürwald T, Stuttard T, Sullivan GW, Taboada I, Tenholt F, Ter-Antonyan S, Terliuk A, Tilav S, Tollefson K, Tomankova L, Tönnis C, Toscano S, Tosi D, Trettin A, Tselengidou M, Tung CF, Turcati A, Turcotte R, Turley CF, Ty B, Unger E, Unland Elorrieta MA, Usner M, Vandenbroucke J, Van Driessche W, van Eijk D, van Eijndhoven N, van Santen J, Verpoest S, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandkowsky N, Watson TB, Weaver C, Weindl A, Weiss MJ, Weldert J, Wendt C, Werthebach J, Whelan BJ, Whitehorn N, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood J, Wood TR, Woschnagg K, Wrede G, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Yuan T, and Zöcklein M
Abstract: We report on the first measurement of the astrophysical neutrino flux using particle showers (cascades) in IceCube data from 2010-2015. Assuming standard oscillations, the astrophysical neutrinos in this dedicated cascade sample are dominated (∼90%) by electron and tau flavors. The flux, observed in the sensitive energy range from 16 TeV to 2.6 PeV, is consistent with a single power-law model as expected from Fermi-type acceleration of high energy particles at astrophysical sources. We find the flux spectral index to be γ=2.53±0.07 and a flux normalization for each neutrino flavor of ϕ_{astro}=1.66_{-0.27}^{+0.25} at E_{0}=100 TeV, in agreement with IceCube's complementary muon neutrino results and with all-neutrino flavor fit results. In the measured energy range we reject spectral indices γ≤2.28 at ≥3σ significance level. Because of high neutrino energy resolution and low atmospheric neutrino backgrounds, this analysis provides the most detailed characterization of the neutrino flux at energies below ∼100 TeV compared to previous IceCube results. Results from fits assuming more complex neutrino flux models suggest a flux softening at high energies and a flux hardening at low energies (p value ≥0.06). The sizable and smooth flux measured below ∼100 TeV remains a puzzle. In order to not violate the isotropic diffuse gamma-ray background as measured by the Fermi Large Area Telescope, it suggests the existence of astrophysical neutrino sources characterized by dense environments which are opaque to gamma rays.
Published: 2020
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3. Observation of Radar Echoes from High-Energy Particle Cascades.

Author: Prohira S, de Vries KD, Allison P, Beatty J, Besson D, Connolly A, van Eijndhoven N, Hast C, Kuo CY, Latif UA, Meures T, Nam J, Nozdrina A, Ralston JP, Riesen Z, Sbrocco C, Torres J, and Wissel S
Abstract: We report the observation of radar echoes from the ionization trails of high-energy particle cascades. Data were taken at the SLAC National Accelerator Laboratory, where the full electron beam (∼10^{9} e^{-} at ∼10 GeV/e^{-}) was directed into a plastic target to simulate an ultrahigh-energy neutrino interaction. The target was interrogated with radio waves, and coherent radio reflections from the cascades were detected with properties consistent with theoretical expectations. This is the first definitive observation of radar echoes from high-energy particle cascades, which may lead to a viable neutrino detection technology for energies ≳10^{16} eV.
Published: 2020
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4. Time-Integrated Neutrino Source Searches with 10 Years of IceCube Data.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Alispach C, Andeen K, Anderson T, Ansseau I, Anton G, Argüelles C, Auffenberg J, Axani S, Backes P, Bagherpour H, Bai X, Balagopal A, Barbano A, Barwick SW, Bastian B, Baum V, Baur S, Bay R, Beatty JJ, Becker KH, Becker Tjus J, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Börner M, Böser S, Botner O, Böttcher J, Bourbeau E, Bourbeau J, Bradascio F, Braun J, Bron S, Brostean-Kaiser J, Burgman A, Buscher J, Busse RS, Carver T, Chen C, Cheung E, Chirkin D, Choi S, Clark K, Classen L, Coleman A, Collin GH, Conrad JM, Coppin P, Correa P, Cowen DF, Cross R, Dave P, De Clercq C, DeLaunay JJ, Dembinski H, Deoskar K, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Diaz A, Díaz-Vélez JC, Dujmovic H, Dunkman M, Dvorak E, Eberhardt B, Ehrhardt T, Eller P, Engel R, Evenson PA, Fahey S, Fazely AR, Felde J, Filimonov K, Finley C, Fox D, Franckowiak A, Friedman E, Fritz A, Gaisser TK, Gallagher J, Ganster E, Garrappa S, Gerhardt L, Ghorbani K, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Griffith Z, Griswold S, Günder M, Gündüz M, Haack C, Hallgren A, Halliday R, Halve L, Halzen F, Hanson K, Haungs A, Hebecker D, Heereman D, Heix P, Helbing K, Hellauer R, Henningsen F, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hoinka T, Hokanson-Fasig B, Hoshina K, Huang F, Huber M, Huber T, Hultqvist K, Hünnefeld M, Hussain R, In S, Iovine N, Ishihara A, Japaridze GS, Jeong M, Jero K, Jones BJP, Jonske F, Joppe R, Kang D, Kang W, Kappes A, Kappesser D, Karg T, Karl M, Karle A, Katz U, Kauer M, Kelley JL, Kheirandish A, Kim J, Kintscher T, Kiryluk J, Kittler T, Klein SR, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krings K, Krückl G, Kulacz N, Kurahashi N, Kyriacou A, Labare M, Lanfranchi JL, Larson MJ, Lauber F, Lazar JP, Leonard K, Leszczyńska A, Leuermann M, Liu QR, Lohfink E, Lozano Mariscal CJ, Lu L, Lucarelli F, Lünemann J, Luszczak W, Lyu Y, Ma WY, Madsen J, Maggi G, Mahn KBM, Makino Y, Mallik P, Mallot K, Mancina S, Mariş IC, Maruyama R, Mase K, Matis HS, Maunu R, McNally F, Meagher K, Medici M, Medina A, Meier M, Meighen-Berger S, Menne T, Merino G, Meures T, Micallef J, Mockler D, Momenté G, Montaruli T, Moore RW, Morse R, Moulai M, Muth P, Nagai R, Naumann U, Neer G, Niederhausen H, Nisa MU, Nowicki SC, Nygren DR, Obertacke Pollmann A, Oehler M, Olivas A, O'Murchadha A, O'Sullivan E, Palczewski T, Pandya H, Pankova DV, Park N, Peiffer P, Pérez de Los Heros C, Philippen S, Pieloth D, Pinat E, Pizzuto A, Plum M, Porcelli A, Price PB, Przybylski GT, Raab C, Raissi A, Rameez M, Rauch L, Rawlins K, Rea IC, Reimann R, Relethford B, Renschler M, Renzi G, Resconi E, Rhode W, Richman M, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Safa I, Sanchez Herrera SE, Sandrock A, Sandroos J, Santander M, Sarkar S, Sarkar S, Satalecka K, Schaufel M, Schieler H, Schlunder P, Schmidt T, Schneider A, Schneider J, Schröder FG, Schumacher L, Sclafani S, Seckel D, Seunarine S, Shefali S, Silva M, Snihur R, Soedingrekso J, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stamatikos M, Stanev T, Stein R, Steinmüller P, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Strotjohann NL, Stürwald T, Stuttard T, Sullivan GW, Taboada I, Tenholt F, Ter-Antonyan S, Terliuk A, Tilav S, Tollefson K, Tomankova L, Tönnis C, Toscano S, Tosi D, Trettin A, Tselengidou M, Tung CF, Turcati A, Turcotte R, Turley CF, Ty B, Unger E, Unland Elorrieta MA, Usner M, Vandenbroucke J, Van Driessche W, van Eijk D, van Eijndhoven N, Vanheule S, van Santen J, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandkowsky N, Watson TB, Weaver C, Weindl A, Weiss MJ, Weldert J, Wendt C, Werthebach J, Whelan BJ, Whitehorn N, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood J, Wood TR, Woschnagg K, Wrede G, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Yuan T, and Zöcklein M
Abstract: This Letter presents the results from pointlike neutrino source searches using ten years of IceCube data collected between April 6, 2008 and July 10, 2018. We evaluate the significance of an astrophysical signal from a pointlike source looking for an excess of clustered neutrino events with energies typically above ∼1 TeV among the background of atmospheric muons and neutrinos. We perform a full-sky scan, a search within a selected source catalog, a catalog population study, and three stacked Galactic catalog searches. The most significant point in the northern hemisphere from scanning the sky is coincident with the Seyfert II galaxy NGC 1068, which was included in the source catalog search. The excess at the coordinates of NGC 1068 is inconsistent with background expectations at the level of 2.9σ after accounting for statistical trials from the entire catalog. The combination of this result along with excesses observed at the coordinates of three other sources, including TXS 0506+056, suggests that, collectively, correlations with sources in the northern catalog are inconsistent with background at 3.3σ significance. The southern catalog is consistent with background. These results, all based on searches for a cumulative neutrino signal integrated over the 10 years of available data, motivate further study of these and similar sources, including time-dependent analyses, multimessenger correlations, and the possibility of stronger evidence with coming upgrades to the detector.
Published: 2020
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5. Constraints on Minute-Scale Transient Astrophysical Neutrino Sources.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Al Samarai I, Altmann D, Andeen K, Anderson T, Ansseau I, Anton G, Argüelles C, Auffenberg J, Axani S, Backes P, Bagherpour H, Bai X, Barbano A, Barron JP, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Börner M, Bos F, Böser S, Botner O, Bourbeau E, Bourbeau J, Bradascio F, Braun J, Brenzke M, Bretz HP, Bron S, Brostean-Kaiser J, Burgman A, Busse RS, Carver T, Cheung E, Chirkin D, Christov A, Clark K, Classen L, Collin GH, Conrad JM, Coppin P, Correa P, Cowen DF, Cross R, Dave P, Day M, de André JPAM, De Clercq C, DeLaunay JJ, Dembinski H, Deoskar K, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, di Lorenzo V, Dujmovic H, Dumm JP, Dunkman M, Dvorak E, Eberhardt B, Ehrhardt T, Eichmann B, Eller P, Evans PA, Evenson PA, Fahey S, Fazely AR, Felde J, Filimonov K, Finley C, Franckowiak A, Friedman E, Fritz A, Gaisser TK, Gallagher J, Ganster E, Gerhardt L, Ghorbani K, Giang W, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Griffith Z, Haack C, Hallgren A, Halve L, Halzen F, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hoinka T, Hokanson-Fasig B, Hoshina K, Huang F, Huber M, Hultqvist K, Hünnefeld M, Hussain R, In S, Iovine N, Ishihara A, Jacobi E, Japaridze GS, Jeong M, Jero K, Jones BJP, Kalaczynski P, Kang W, Kappes A, Kappesser D, Karg T, Karle A, Katz U, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kim J, Kintscher T, Kiryluk J, Kittler T, Klein SR, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koschinsky JP, Koskinen DJ, Kowalski M, Krings K, Kroll M, Krückl G, Kunwar S, Kurahashi N, Kyriacou A, Labare M, Lanfranchi JL, Larson MJ, Lauber F, Leonard K, Leuermann M, Liu QR, Lohfink E, Lozano Mariscal CJ, Lu L, Lünemann J, Luszczak W, Madsen J, Maggi G, Mahn KBM, Makino Y, Mancina S, Mariş IC, Maruyama R, Mase K, Maunu R, Meagher K, Medici M, Meier M, Menne T, Merino G, Meures T, Miarecki S, Micallef J, Momenté G, Montaruli T, Moore RW, Moulai M, Nagai R, Nahnhauer R, Nakarmi P, Naumann U, Neer G, Niederhausen H, Nowicki SC, Nygren DR, Obertacke Pollmann A, Olivas A, O'Murchadha A, Osborne JP, O'Sullivan E, Palczewski T, Pandya H, Pankova DV, Peiffer P, Pepper JA, Pérez de Los Heros C, Pieloth D, Pinat E, Pizzuto A, Plum M, Price PB, Przybylski GT, Raab C, Rameez M, Rauch L, Rawlins K, Rea IC, Reimann R, Relethford B, Renzi G, Resconi E, Rhode W, Richman M, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Safa I, Sanchez Herrera SE, Sandrock A, Sandroos J, Santander M, Sarkar S, Sarkar S, Satalecka K, Schaufel M, Schlunder P, Schmidt T, Schneider A, Schneider J, Schöneberg S, Schumacher L, Sclafani S, Seckel D, Seunarine S, Soedingrekso J, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stamatikos M, Stanev T, Stasik A, Stein R, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Strotjohann NL, Stuttard T, Sullivan GW, Sutherland M, Taboada I, Tenholt F, Ter-Antonyan S, Terliuk A, Tilav S, Toale PA, Tobin MN, Tönnis C, Toscano S, Tosi D, Tselengidou M, Tung CF, Turcati A, Turley CF, Ty B, Unger E, Unland Elorrieta MA, Usner M, Vandenbroucke J, Van Driessche W, van Eijk D, van Eijndhoven N, Vanheule S, van Santen J, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandler FD, Wandkowsky N, Watson TB, Waza A, Weaver C, Weiss MJ, Wendt C, Werthebach J, Westerhoff S, Whelan BJ, Whitehorn N, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood J, Wood TR, Woolsey E, Woschnagg K, Wrede G, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, and Yuan T
Abstract: High-energy neutrino emission has been predicted for several short-lived astrophysical transients including gamma-ray bursts (GRBs), core-collapse supernovae with choked jets, and neutron star mergers. IceCube's optical and x-ray follow-up program searches for such transient sources by looking for two or more muon neutrino candidates in directional coincidence and arriving within 100 s. The measured rate of neutrino alerts is consistent with the expected rate of chance coincidences of atmospheric background events and no likely electromagnetic counterparts have been identified in Swift follow-up observations. Here, we calculate generic bounds on the neutrino flux of short-lived transient sources. Assuming an E^{-2.5} neutrino spectrum, we find that the neutrino flux of rare sources, like long gamma-ray bursts, is constrained to <5% of the detected astrophysical flux and the energy released in neutrinos (100 GeV to 10 PeV) by a median bright GRB-like source is <10^{52.5} erg. For a harder E^{-2.13} neutrino spectrum up to 30% of the flux could be produced by GRBs and the allowed median source energy is <10^{52} erg. A hypothetical population of transient sources has to be more common than 10^{-5} Mpc^{-3} yr^{-1} (5×10^{-8} Mpc^{-3} yr^{-1} for the E^{-2.13} spectrum) to account for the complete astrophysical neutrino flux.
Published: 2019
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6. Measurement of Atmospheric Neutrino Oscillations at 6-56 GeV with IceCube DeepCore.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Al Samarai I, Altmann D, Andeen K, Anderson T, Ansseau I, Anton G, Argüelles C, Auffenberg J, Axani S, Bagherpour H, Bai X, Barron JP, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Börner M, Bos F, Bose D, Böser S, Botner O, Bourbeau J, Bradascio F, Braun J, Brayeur L, Brenzke M, Bretz HP, Bron S, Brostean-Kaiser J, Burgman A, Carver T, Casey J, Casier M, Cheung E, Chirkin D, Christov A, Clark K, Classen L, Coenders S, Collin GH, Conrad JM, Cowen DF, Cross R, Day M, de André JPAM, De Clercq C, DeLaunay JJ, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, di Lorenzo V, Dujmovic H, Dumm JP, Dunkman M, Eberhardt B, Ehrhardt T, Eichmann B, Eller P, Evenson PA, Fahey S, Fazely AR, Felde J, Filimonov K, Finley C, Flis S, Franckowiak A, Friedman E, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Ghorbani K, Giang W, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Griffith Z, Haack C, Hallgren A, Halzen F, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hokanson-Fasig B, Hoshina K, Huang F, Huber M, Hultqvist K, Hünnefeld M, In S, Ishihara A, Jacobi E, Japaridze GS, Jeong M, Jero K, Jones BJP, Kalaczynski P, Kang W, Kappes A, Karg T, Karle A, Katz U, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kim J, Kim M, Kintscher T, Kiryluk J, Kittler T, Klein SR, Kohnen G, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koschinsky JP, Koskinen DJ, Kowalski M, Krings K, Kroll M, Krückl G, Kunnen J, Kunwar S, Kurahashi N, Kuwabara T, Kyriacou A, Labare M, Lanfranchi JL, Larson MJ, Lauber F, Lennarz D, Lesiak-Bzdak M, Leuermann M, Liu QR, Lu L, Lünemann J, Luszczak W, Madsen J, Maggi G, Mahn KBM, Mancina S, Maruyama R, Mase K, Maunu R, McNally F, Meagher K, Medici M, Meier M, Menne T, Merino G, Meures T, Miarecki S, Micallef J, Momenté G, Montaruli T, Moore RW, Moulai M, Nahnhauer R, Nakarmi P, Naumann U, Neer G, Niederhausen H, Nowicki SC, Nygren DR, Obertacke Pollmann A, Olivas A, O'Murchadha A, Palczewski T, Pandya H, Pankova DV, Peiffer P, Pepper JA, Pérez de Los Heros C, Pieloth D, Pinat E, Plum M, Price PB, Przybylski GT, Raab C, Rädel L, Rameez M, Rawlins K, Rea IC, Reimann R, Relethford B, Relich M, Resconi E, Rhode W, Richman M, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Sälzer T, Sanchez Herrera SE, Sandrock A, Sandroos J, Sarkar S, Sarkar S, Satalecka K, Schlunder P, Schmidt T, Schneider A, Schoenen S, Schöneberg S, Schumacher L, Seckel D, Seunarine S, Soedingrekso J, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stamatikos M, Stanev T, Stasik A, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Strotjohann NL, Sullivan GW, Sutherland M, Taboada I, Tatar J, Tenholt F, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Toscano S, Tosi D, Tselengidou M, Tung CF, Turcati A, Turley CF, Ty B, Unger E, Usner M, Vandenbroucke J, Van Driessche W, van Eijndhoven N, Vanheule S, van Santen J, Vehring M, Vogel E, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandler FD, Wandkowsky N, Waza A, Weaver C, Weiss MJ, Wendt C, Werthebach J, Westerhoff S, Whelan BJ, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood J, Wood TR, Woolsey E, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Yuan T, and Zoll M
Abstract: We present a measurement of the atmospheric neutrino oscillation parameters using three years of data from the IceCube Neutrino Observatory. The DeepCore infill array in the center of IceCube enables the detection and reconstruction of neutrinos produced by the interaction of cosmic rays in Earth's atmosphere at energies as low as ∼5 GeV. That energy threshold permits measurements of muon neutrino disappearance, over a range of baselines up to the diameter of the Earth, probing the same range of L/E_{ν} as long-baseline experiments but with substantially higher-energy neutrinos. This analysis uses neutrinos from the full sky with reconstructed energies from 5.6 to 56 GeV. We measure Δm_{32}^{2}=2.31_{-0.13}^{+0.11}×10^{-3} eV^{2} and sin^{2}θ_{23}=0.51_{-0.09}^{+0.07}, assuming normal neutrino mass ordering. These results are consistent with, and of similar precision to, those from accelerator- and reactor-based experiments.
Published: 2018
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7. Search for neutrinos from decaying dark matter with IceCube: IceCube Collaboration.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Samarai IA, Altmann D, Andeen K, Anderson T, Ansseau I, Anton G, Argüelles C, Auffenberg J, Axani S, Backes P, Bagherpour H, Bai X, Barron JP, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Börner M, Bos F, Böser S, Botner O, Bourbeau E, Bourbeau J, Bradascio F, Braun J, Brenzke M, Bretz HP, Bron S, Brostean-Kaiser J, Burgman A, Busse RS, Carver T, Cheung E, Chirkin D, Christov A, Clark K, Classen L, Collin GH, Conrad JM, Coppin P, Correa P, Cowen DF, Cross R, Dave P, Day M, de André JPAM, De Clercq C, DeLaunay JJ, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, di Lorenzo V, Dujmovic H, Dumm JP, Dunkman M, Dvorak E, Eberhardt B, Ehrhardt T, Eichmann B, Eller P, Evenson PA, Fahey S, Fazely AR, Felde J, Filimonov K, Finley C, Flis S, Franckowiak A, Friedman E, Fritz A, Gaisser TK, Gallagher J, Ganster E, Gerhardt L, Ghorbani K, Giang W, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Griffith Z, Haack C, Hallgren A, Halve L, Halzen F, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hoinka T, Hokanson-Fasig B, Hoshina K, Huang F, Huber M, Hultqvist K, Hünnefeld M, Hussain R, In S, Iovine N, Ishihara A, Jacobi E, Japaridze GS, Jeong M, Jero K, Jones BJP, Kalaczynski P, Kang W, Kappes A, Kappesser D, Karg T, Karle A, Katz U, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kim J, Kim M, Kintscher T, Kiryluk J, Kittler T, Klein SR, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koschinsky JP, Koskinen DJ, Kowalski M, Krings K, Kroll M, Krückl G, Kunwar S, Kurahashi N, Kuwabara T, Kyriacou A, Labare M, Lanfranchi JL, Larson MJ, Lauber F, Leonard K, Lesiak-Bzdak M, Leuermann M, Liu QR, Lohfink E, Mariscal CJL, Lu L, Lünemann J, Luszczak W, Madsen J, Maggi G, Mahn KBM, Mancina S, Maruyama R, Mase K, Maunu R, Meagher K, Medici M, Meier M, Menne T, Merino G, Meures T, Miarecki S, Micallef J, Momenté G, Montaruli T, Moore RW, Moulai M, Nahnhauer R, Nakarmi P, Naumann U, Neer G, Niederhausen H, Nowicki SC, Nygren DR, Obertacke Pollmann A, Olivas A, O'Murchadha A, O'Sullivan E, Palczewski T, Pandya H, Pankova DV, Peiffer P, Pepper JA, Pérez de Los Heros C, Pieloth D, Pinat E, Plum M, Price PB, Przybylski GT, Raab C, Rädel L, Rameez M, Rauch L, Rawlins K, Rea IC, Reimann R, Relethford B, Relich M, Resconi E, Rhode W, Richman M, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Safa I, Sanchez Herrera SE, Sandrock A, Sandroos J, Santander M, Sarkar S, Sarkar S, Satalecka K, Schaufel M, Schlunder P, Schmidt T, Schneider A, Schoenen S, Schöneberg S, Schumacher L, Sclafani S, Seckel D, Seunarine S, Soedingrekso J, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stamatikos M, Stanev T, Stasik A, Stein R, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Strotjohann NL, Stuttard T, Sullivan GW, Sutherland M, Taboada I, Tatar J, Tenholt F, Ter-Antonyan S, Terliuk A, Tilav S, Toale PA, Tobin MN, Tönnis C, Toscano S, Tosi D, Tselengidou M, Tung CF, Turcati A, Turley CF, Ty B, Unger E, Usner M, Vandenbroucke J, Van Driessche W, van Eijk D, van Eijndhoven N, Vanheule S, van Santen J, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandler FD, Wandkowsky N, Waza A, Weaver C, Weiss MJ, Wendt C, Werthebach J, Westerhoff S, Whelan BJ, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood J, Wood TR, Woolsey E, Woschnagg K, Wrede G, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, and Yuan T
Abstract: With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino 'track' events from the Northern Hemisphere, while the second analysis uses 2 years of 'cascade' events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than 10 28 s at 90% CL for dark matter masses above 10 TeV .
Published: 2018
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8. Measurement of the ν μ energy spectrum with IceCube-79: IceCube Collaboration.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Al Samarai I, Altmann D, Andeen K, Anderson T, Ansseau I, Anton G, Archinger M, Argüelles C, Auffenberg J, Axani S, Bagherpour H, Bai X, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Börner M, Bos F, Bose D, Böser S, Botner O, Bradascio F, Braun J, Brayeur L, Bretz HP, Bron S, Burgman A, Carver T, Casier M, Cheung E, Chirkin D, Christov A, Clark K, Classen L, Coenders S, Collin GH, Conrad JM, Cowen DF, Cross R, Day M, de André JPAM, De Clercq C, Del Pino Rosendo E, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, di Lorenzo V, Dujmovic H, Dumm JP, Dunkman M, Eberhardt B, Ehrhardt T, Eichmann B, Eller P, Euler S, Evenson PA, Fahey S, Fazely AR, Feintzeig J, Felde J, Filimonov K, Finley C, Flis S, Fösig CC, Franckowiak A, Friedman E, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Ghorbani K, Giang W, Gladstone L, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Griffith Z, Haack C, Hallgren A, Halzen F, Hansen E, Hansmann T, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hoshina K, Huang F, Huber M, Hultqvist K, In S, Ishihara A, Jacobi E, Japaridze GS, Jeong M, Jero K, Jones BJP, Kang W, Kappes A, Karg T, Karle A, Katz U, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kim J, Kim M, Kintscher T, Kiryluk J, Kittler T, Klein SR, Kohnen G, Koirala R, Kolanoski H, Konietz R, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krings K, Kroll M, Krückl G, Krüger C, Kunnen J, Kunwar S, Kurahashi N, Kuwabara T, Kyriacou A, Labare M, Lanfranchi JL, Larson MJ, Lauber F, Lennarz D, Lesiak-Bzdak M, Leuermann M, Lu L, Lünemann J, Madsen J, Maggi G, Mahn KBM, Mancina S, Maruyama R, Mase K, Maunu R, McNally F, Meagher K, Medici M, Meier M, Menne T, Merino G, Meures T, Miarecki S, Micallef J, Momenté G, Montaruli T, Moulai M, Nahnhauer R, Naumann U, Neer G, Niederhausen H, Nowicki SC, Nygren DR, Obertacke Pollmann A, Olivas A, O'Murchadha A, Palczewski T, Pandya H, Pankova DV, Peiffer P, Penek Ö, Pepper JA, Pérez de Los Heros C, Pieloth D, Pinat E, Price PB, Przybylski GT, Quinnan M, Raab C, Rädel L, Rameez M, Rawlins K, Reimann R, Relethford B, Relich M, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Sabbatini L, Sanchez Herrera SE, Sandrock A, Sandroos J, Sarkar S, Satalecka K, Schlunder P, Schmidt T, Schoenen S, Schöneberg S, Schumacher L, Seckel D, Seunarine S, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stanev T, Stasik A, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Ström R, Strotjohann NL, Sullivan GW, Sutherland M, Taavola H, Taboada I, Tatar J, Tenholt F, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Toscano S, Tosi D, Tselengidou M, Tung CF, Turcati A, Unger E, Usner M, Vandenbroucke J, van Eijndhoven N, Vanheule S, van Rossem M, van Santen J, Vehring M, Voge M, Vogel E, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandkowsky N, Waza A, Weaver C, Weiss MJ, Wendt C, Westerhoff S, Whelan BJ, Wickmann S, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood TR, Woolsey E, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, and Zoll M
Abstract: IceCube is a neutrino observatory deployed in the glacial ice at the geographic South Pole. The ν μ energy unfolding described in this paper is based on data taken with IceCube in its 79-string configuration. A sample of muon neutrino charged-current interactions with a purity of 99.5% was selected by means of a multivariate classification process based on machine learning. The subsequent unfolding was performed using the software Truee. The resulting spectrum covers an E ν -range of more than four orders of magnitude from 125 GeV to 3.2 PeV. Compared to the Honda atmospheric neutrino flux model, the energy spectrum shows an excess of more than 1.9 σ in four adjacent bins for neutrino energies E ν ≥ 177.8 TeV . The obtained spectrum is fully compatible with previous measurements of the atmospheric neutrino flux and recent IceCube measurements of a flux of high-energy astrophysical neutrinos., (© The Author(s) 2017.)
Published: 2017
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9. Constraints on Ultrahigh-Energy Cosmic-Ray Sources from a Search for Neutrinos above 10 PeV with IceCube.

Author: Aartsen MG, Abraham K, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Andeen K, Anderson T, Ansseau I, Anton G, Archinger M, Argüelles C, Auffenberg J, Axani S, Bai X, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blot S, Bohm C, Börner M, Bos F, Bose D, Böser S, Botner O, Braun J, Brayeur L, Bretz HP, Burgman A, Carver T, Casier M, Cheung E, Chirkin D, Christov A, Clark K, Classen L, Coenders S, Collin GH, Conrad JM, Cowen DF, Cross R, Day M, de André JP, De Clercq C, Del Pino Rosendo E, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, di Lorenzo V, Dujmovic H, Dumm JP, Dunkman M, Eberhardt B, Ehrhardt T, Eichmann B, Eller P, Euler S, Evenson PA, Fahey S, Fazely AR, Feintzeig J, Felde J, Filimonov K, Finley C, Flis S, Fösig CC, Franckowiak A, Friedman E, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Ghorbani K, Giang W, Gladstone L, Glagla M, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Grant D, Griffith Z, Haack C, Haj Ismail A, Hallgren A, Halzen F, Hansen E, Hansmann B, Hansmann T, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Holzapfel K, Hoshina K, Huang F, Huber M, Hultqvist K, In S, Ishihara A, Jacobi E, Japaridze GS, Jeong M, Jero K, Jones BJ, Jurkovic M, Kappes A, Karg T, Karle A, Katz U, Kauer M, Keivani A, Kelley JL, Kemp J, Kheirandish A, Kim M, Kintscher T, Kiryluk J, Kittler T, Klein SR, Kohnen G, Koirala R, Kolanoski H, Konietz R, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krings K, Kroll M, Krückl G, Krüger C, Kunnen J, Kunwar S, Kurahashi N, Kuwabara T, Labare M, Lanfranchi JL, Larson MJ, Lauber F, Lennarz D, Lesiak-Bzdak M, Leuermann M, Leuner J, Lu L, Lünemann J, Madsen J, Maggi G, Mahn KB, Mancina S, Mandelartz M, Maruyama R, Mase K, Maunu R, McNally F, Meagher K, Medici M, Meier M, Meli A, Menne T, Merino G, Meures T, Miarecki S, Mohrmann L, Montaruli T, Moulai M, Nahnhauer R, Naumann U, Neer G, Niederhausen H, Nowicki SC, Nygren DR, Obertacke Pollmann A, Olivas A, O'Murchadha A, Palczewski T, Pandya H, Pankova DV, Penek Ö, Pepper JA, Pérez de Los Heros C, Pieloth D, Pinat E, Price PB, Przybylski GT, Quinnan M, Raab C, Rädel L, Rameez M, Rawlins K, Reimann R, Relethford B, Relich M, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Sabbatini L, Sanchez Herrera SE, Sandrock A, Sandroos J, Sarkar S, Satalecka K, Schimp M, Schlunder P, Schmidt T, Schoenen S, Schöneberg S, Schumacher L, Seckel D, Seunarine S, Soldin D, Song M, Spiczak GM, Spiering C, Stahlberg M, Stanev T, Stasik A, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Ström R, Strotjohann NL, Sullivan GW, Sutherland M, Taavola H, Taboada I, Tatar J, Tenholt F, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Toscano S, Tosi D, Tselengidou M, Turcati A, Unger E, Usner M, Vandenbroucke J, van Eijndhoven N, Vanheule S, van Rossem M, van Santen J, Veenkamp J, Vehring M, Voge M, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandkowsky N, Weaver C, Weiss MJ, Wendt C, Westerhoff S, Whelan BJ, Wickmann S, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood TR, Woolsey E, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, and Zoll M
Abstract: We report constraints on the sources of ultrahigh-energy cosmic rays (UHECRs) above 10^{9} GeV, based on an analysis of seven years of IceCube data. This analysis efficiently selects very high- energy neutrino-induced events which have deposited energies from 5×10^{5} GeV to above 10^{11} GeV. Two neutrino-induced events with an estimated deposited energy of (2.6±0.3)×10^{6} GeV, the highest neutrino energy observed so far, and (7.7±2.0)×10^{5} GeV were detected. The atmospheric background-only hypothesis of detecting these events is rejected at 3.6σ. The hypothesis that the observed events are of cosmogenic origin is also rejected at >99% CL because of the limited deposited energy and the nonobservation of events at higher energy, while their observation is consistent with an astrophysical origin. Our limits on cosmogenic neutrino fluxes disfavor the UHECR sources having a cosmological evolution stronger than the star formation rate, e.g., active galactic nuclei and γ-ray bursts, assuming proton-dominated UHECRs. Constraints on UHECR sources including mixed and heavy UHECR compositions are obtained for models of neutrino production within UHECR sources. Our limit disfavors a significant part of parameter space for active galactic nuclei and new-born pulsar models. These limits on the ultrahigh-energy neutrino flux models are the most stringent to date.
Published: 2016
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10. Searches for Sterile Neutrinos with the IceCube Detector.

Author: Aartsen MG, Abraham K, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Andeen K, Anderson T, Ansseau I, Anton G, Archinger M, Argüelles C, Arlen TC, Auffenberg J, Axani S, Bai X, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Boersma DJ, Bohm C, Börner M, Bos F, Bose D, Böser S, Botner O, Braun J, Brayeur L, Bretz HP, Burgman A, Casey J, Casier M, Cheung E, Chirkin D, Christov A, Clark K, Classen L, Coenders S, Collin GH, Conrad JM, Cowen DF, Cruz Silva AH, Daughhetee J, Davis JC, Day M, de André JP, De Clercq C, Del Pino Rosendo E, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, di Lorenzo V, Dujmovic H, Dumm JP, Dunkman M, Eberhardt B, Ehrhardt T, Eichmann B, Euler S, Evenson PA, Fahey S, Fazely AR, Feintzeig J, Felde J, Filimonov K, Finley C, Flis S, Fösig CC, Fuchs T, Gaisser TK, Gaior R, Gallagher J, Gerhardt L, Ghorbani K, Giang W, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Góra D, Grant D, Griffith Z, Haj Ismail A, Hallgren A, Halzen F, Hansen E, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Holzapfel K, Homeier A, Hoshina K, Huang F, Huber M, Huelsnitz W, Hultqvist K, In S, Ishihara A, Jacobi E, Japaridze GS, Jeong M, Jero K, Jones BJ, Jurkovic M, Kappes A, Karg T, Karle A, Katz U, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kim M, Kintscher T, Kiryluk J, Kittler T, Klein SR, Kohnen G, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krings K, Kroll M, Krückl G, Krüger C, Kunnen J, Kunwar S, Kurahashi N, Kuwabara T, Labare M, Lanfranchi JL, Larson MJ, Lennarz D, Lesiak-Bzdak M, Leuermann M, Lu L, Lünemann J, Madsen J, Maggi G, Mahn KB, Mancina S, Mandelartz M, Maruyama R, Mase K, Maunu R, McNally F, Meagher K, Medici M, Meier M, Meli A, Menne T, Merino G, Meures T, Miarecki S, Middell E, Mohrmann L, Montaruli T, Moulai M, Nahnhauer R, Naumann U, Neer G, Niederhausen H, Nowicki SC, Nygren DR, Obertacke Pollmann A, Olivas A, Omairat A, O'Murchadha A, Palczewski T, Pandya H, Pankova DV, Pepper JA, Pérez de Los Heros C, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Quinnan M, Raab C, Rameez M, Rawlins K, Relich M, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Sabbatini L, Salvado J, Sanchez Herrera SE, Sandrock A, Sandroos J, Sarkar S, Satalecka K, Schlunder P, Schmidt T, Schöneberg S, Schönwald A, Seckel D, Seunarine S, Soldin D, Song M, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Ström R, Strotjohann NL, Sullivan GW, Sutherland M, Taavola H, Taboada I, Tatar J, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Toscano S, Tosi D, Tselengidou M, Turcati A, Unger E, Usner M, Vallecorsa S, Vandenbroucke J, van Eijndhoven N, Vanheule S, van Rossem M, van Santen J, Veenkamp J, Voge M, Vraeghe M, Walck C, Wallace A, Wandkowsky N, Weaver Ch, Wendt C, Westerhoff S, Whelan BJ, Wiebe K, Wille L, Williams DR, Wills L, Wissing H, Wolf M, Wood TR, Woolsey E, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, and Zoll M
Abstract: The IceCube neutrino telescope at the South Pole has measured the atmospheric muon neutrino spectrum as a function of zenith angle and energy in the approximate 320 GeV to 20 TeV range, to search for the oscillation signatures of light sterile neutrinos. No evidence for anomalous ν_{μ} or ν[over ¯]_{μ} disappearance is observed in either of two independently developed analyses, each using one year of atmospheric neutrino data. New exclusion limits are placed on the parameter space of the 3+1 model, in which muon antineutrinos experience a strong Mikheyev-Smirnov-Wolfenstein-resonant oscillation. The exclusion limits extend to sin^{2}2θ_{24}≤0.02 at Δm^{2}∼0.3 eV^{2} at the 90% confidence level. The allowed region from global analysis of appearance experiments, including LSND and MiniBooNE, is excluded at approximately the 99% confidence level for the global best-fit value of |U_{e4}|^{2}.
Published: 2016
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11. Evidence for Astrophysical Muon Neutrinos from the Northern Sky with IceCube.

Author: Aartsen MG, Abraham K, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Anderson T, Archinger M, Arguelles C, Arlen TC, Auffenberg J, Bai X, Barwick SW, Baum V, Bay R, Beatty JJ, Tjus JB, Becker KH, Beiser E, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Börner M, Bos F, Bose D, Böser S, Botner O, Braun J, Brayeur L, Bretz HP, Brown AM, Buzinsky N, Casey J, Casier M, Cheung E, Chirkin D, Christov A, Christy B, Clark K, Classen L, Coenders S, Cowen DF, Silva AH, Daughhetee J, Davis JC, Day M, de André JP, De Clercq C, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, Dumm JP, Dunkman M, Eagan R, Eberhardt B, Ehrhardt T, Eichmann B, Euler S, Evenson PA, Fadiran O, Fahey S, Fazely AR, Fedynitch A, Feintzeig J, Felde J, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Fuchs T, Glagla M, Gaisser TK, Gaior R, Gallagher J, Gerhardt L, Ghorbani K, Gier D, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grant D, Gretskov P, Groh JC, Groß A, Ha C, Haack C, Ismail AH, Hallgren A, Halzen F, Hansmann B, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hellwig D, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Holzapfe K, Homeier A, Hoshina K, Huang F, Huber M, Huelsnitz W, Hulth PO, Hultqvist K, In S, Ishihara A, Jacobi E, Japaridze GS, Jero K, Jurkovic M, Kaminsky B, Kappes A, Karg T, Karle A, Kauer M, Keivani A, Kelley JL, Kemp J, Kheirandish A, Kiryluk J, Kläs J, Klein SR, Kohnen G, Kolanoski H, Konietz R, Koob A, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krings K, Kroll G, Kroll M, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Lanfranchi JL, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leuner J, Lünemann J, Madsen J, Maggi G, Mahn KB, Maruyama R, Mase K, Matis HS, Maunu R, McNally F, Meagher K, Medici M, Meli A, Menne T, Merino G, Meures T, Miarecki S, Middell E, Middlemas E, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Olivas A, Omairat A, O'Murchadha A, Palczewski T, Paul L, Pepper JA, de Los Heros CP, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Pütz J, Quinnan M, Rädel L, Rameez M, Rawlins K, Redl P, Reimann R, Relich M, Resconi E, Rhode W, Richman M, Richter S, Riedel B, Robertson S, Rongen M, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Sabbatini L, Sander HG, Sandrock A, Sandroos J, Sarkar S, Schatto K, Scheriau F, Schimp M, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Seckel D, Seunarine S, Shanidze R, Smith MW, Soldin D, Spiczak GM, Spiering C, Stahlberg M, Stamatikos M, Stanev T, Stanisha NA, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Strotjohann NL, Sullivan GW, Sutherland M, Taavola H, Taboada I, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Tosi D, Tselengidou M, Unger E, Usner M, Vallecorsa S, van Eijndhoven N, Vandenbroucke J, van Santen J, Vanheule S, Veenkamp J, Vehring M, Voge M, Vraeghe M, Walck C, Wallraff M, Wandkowsky N, Weaver C, Wendt C, Westerhoff S, Whelan BJ, Whitehorn N, Wichary C, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, and Zoll M
Abstract: Results from the IceCube Neutrino Observatory have recently provided compelling evidence for the existence of a high energy astrophysical neutrino flux utilizing a dominantly Southern Hemisphere data set consisting primarily of ν(e) and ν(τ) charged-current and neutral-current (cascade) neutrino interactions. In the analysis presented here, a data sample of approximately 35,000 muon neutrinos from the Northern sky is extracted from data taken during 659.5 days of live time recorded between May 2010 and May 2012. While this sample is composed primarily of neutrinos produced by cosmic ray interactions in Earth's atmosphere, the highest energy events are inconsistent with a hypothesis of solely terrestrial origin at 3.7σ significance. These neutrinos can, however, be explained by an astrophysical flux per neutrino flavor at a level of Φ(E(ν))=9.9(-3.4)(+3.9)×10(-19) GeV(-1) cm(-2) sr(-1) s(-1)(E(ν)/100 TeV(-2), consistent with IceCube's Southern-Hemisphere-dominated result. Additionally, a fit for an astrophysical flux with an arbitrary spectral index is performed. We find a spectral index of 2.2(-0.2)(+0.2), which is also in good agreement with the Southern Hemisphere result.
Published: 2015
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12. Flavor Ratio of Astrophysical Neutrinos above 35 TeV in IceCube.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Anderson T, Arguelles C, Arlen TC, Auffenberg J, Bai X, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bos F, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Buzinsky N, Casey J, Casier M, Cheung E, Chirkin D, Christov A, Christy B, Clark K, Classen L, Clevermann F, Coenders S, Cowen DF, Cruz Silva AH, Daughhetee J, Davis JC, Day M, de André JP, De Clercq C, Dembinski H, De Ridder S, Desiati P, de Vries KD, de With M, DeYoung T, Díaz-Vélez JC, Dumm JP, Dunkman M, Eagan R, Eberhardt B, Ehrhardt T, Eichmann B, Eisch J, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Felde J, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Frantzen K, Fuchs T, Gaisser TK, Gaior R, Gallagher J, Gerhardt L, Gier D, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grant D, Gretskov P, Groh JC, Groß A, Ha C, Haack C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Hebecker D, Heereman D, Heinen D, Helbing K, Hellauer R, Hellwig D, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huang F, Huelsnitz W, Hulth PO, Hultqvist K, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jurkovic M, Kaminsky B, Kappes A, Karg T, Karle A, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kiryluk J, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Koob A, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Kriesten A, Krings K, Kroll G, Kroll M, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Lanfranchi JL, Larsen DT, Larson MJ, Lesiak-Bzdak M, Leuermann M, Lünemann J, Madsen J, Maggi G, Maruyama R, Mase K, Matis HS, Maunu R, McNally F, Meagher K, Medici M, Meli A, Meures T, Miarecki S, Middell E, Middlemas E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Olivas A, Omairat A, O'Murchadha A, Palczewski T, Paul L, Penek Ö, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Pütz J, Quinnan M, Rädel L, Rameez M, Rawlins K, Redl P, Rees I, Reimann R, Relich M, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rodrigues JP, Rongen M, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Sander HG, Sandroos J, Santander M, Sarkar S, Schatto K, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Shanidze R, Smith MW, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stanisha NA, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Strotjohann NL, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Tosi D, Tselengidou M, Unger E, Usner M, Vallecorsa S, van Eijndhoven N, Vandenbroucke J, van Santen J, Vanheule S, Vehring M, Voge M, Vraeghe M, Walck C, Wallraff M, Weaver Ch, Wellons M, Wendt C, Westerhoff S, Whelan BJ, Whitehorn N, Wichary C, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, and Zoll M
Abstract: A diffuse flux of astrophysical neutrinos above 100 TeV has been observed at the IceCube Neutrino Observatory. Here we extend this analysis to probe the astrophysical flux down to 35 TeV and analyze its flavor composition by classifying events as showers or tracks. Taking advantage of lower atmospheric backgrounds for showerlike events, we obtain a shower-biased sample containing 129 showers and 8 tracks collected in three years from 2010 to 2013. We demonstrate consistency with the (fe:fμ:fτ)⊕≈(1:1:1)⊕ flavor ratio at Earth commonly expected from the averaged oscillations of neutrinos produced by pion decay in distant astrophysical sources. Limits are placed on nonstandard flavor compositions that cannot be produced by averaged neutrino oscillations but could arise in exotic physics scenarios. A maximally tracklike composition of (0:1:0)⊕ is excluded at 3.3σ, and a purely showerlike composition of (1:0:0)⊕ is excluded at 2.3σ.
Published: 2015
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13. Development of a general analysis and unfolding scheme and its application to measure the energy spectrum of atmospheric neutrinos with IceCube: IceCube Collaboration.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Anderson T, Arguelles C, Arlen TC, Auffenberg J, Bai X, Barwick SW, Baum V, Beatty JJ, Tjus JB, Becker KH, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bos F, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Casey J, Casier M, Cheung E, Chirkin D, Christov A, Christy B, Clark K, Classen L, Clevermann F, Coenders S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, Day M, de André JP, De Clercq C, De Ridder S, Desiati P, de Vries KD, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eichmann B, Eisch J, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Felde J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Frantzen K, Fuchs T, Gaisser TK, Gaior R, Gallagher J, Gerhardt L, Gier D, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grant D, Gretskov P, Groh JC, Groß A, Ha C, Haack C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Hebecker D, Heereman D, Heinen D, Helbing K, Hellauer R, Hellwig D, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huang F, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Jurkovic M, Kaminsky B, Kappes A, Karg T, Karle A, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kiryluk J, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Koob A, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Kriesten A, Krings K, Kroll G, Kroll M, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Larsen DT, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Madsen J, Maggi G, Maruyama R, Mase K, Matis HS, Maunu R, McNally F, Meagher K, Medici M, Meli A, Meures T, Miarecki S, Middell E, Middlemas 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, Omairat A, O'Murchadha A, Palczewski T, Paul L, Penek Ö, Pepper JA, Pérez de Los Heros C, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Pütz J, Quinnan M, Rädel L, Rameez M, Rawlins K, Redl P, Rees I, Reimann R, Relich M, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rodrigues JP, Rongen M, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Sander HG, Sandroos J, Santander M, Sarkar S, Schatto K, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Shanidze R, Smith MW, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stanisha NA, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Strotjohann NL, Sullivan GW, Taavola H, Taboada I, Tamburro A, Tepe A, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Tosi D, Tselengidou M, Unger E, Usner M, Vallecorsa S, van Eijndhoven N, Vandenbroucke J, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Wallraff M, Weaver C, Wellons M, Wendt C, Westerhoff S, Whelan BJ, Whitehorn N, Wichary C, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zoll M, and Morik K
Abstract: We present the development and application of a generic analysis scheme for the measurement of neutrino spectra with the IceCube detector. This scheme is based on regularized unfolding, preceded by an event selection which uses a Minimum Redundancy Maximum Relevance algorithm to select the relevant variables and a random forest for the classification of events. The analysis has been developed using IceCube data from the 59-string configuration of the detector. 27,771 neutrino candidates were detected in 346 days of livetime. A rejection of 99.9999 % of the atmospheric muon background is achieved. The energy spectrum of the atmospheric neutrino flux is obtained using the TRUEE unfolding program. The unfolded spectrum of atmospheric muon neutrinos covers an energy range from 100 GeV to 1 PeV. Compared to the previous measurement using the detector in the 40-string configuration, the analysis presented here, extends the upper end of the atmospheric neutrino spectrum by more than a factor of two, reaching an energy region that has not been previously accessed by spectral measurements.
Published: 2015
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14. Observation of high-energy astrophysical neutrinos in three years of IceCube data.

Author: Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Anderson T, Arguelles C, Arlen TC, Auffenberg J, Bai X, Barwick SW, Baum V, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Casey J, Casier M, Chirkin D, Christov A, Christy B, Clark K, Classen L, Clevermann F, Coenders S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, Day M, de André JP, De Clercq C, De Ridder S, Desiati P, de Vries KD, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eichmann B, Eisch J, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Felde J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gier D, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grandmont DT, Grant D, Gretskov P, Groh JC, Groß A, Ha C, Haack C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Hebecker D, Heereman D, Heinen D, Helbing K, Hellauer R, Hellwig D, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huang F, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Jurkovic M, Kaminsky B, Kappes A, Karg T, Karle A, Kauer M, Kelley JL, Kheirandish A, Kiryluk J, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Koob A, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Kriesten A, Krings K, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Larsen DT, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Macías O, Madsen J, Maggi G, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Meli A, Meures T, Miarecki S, Middell E, Middlemas 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, Omairat A, O'Murchadha A, Palczewski T, Paul L, Penek O, Pepper JA, Pérez de Los Heros C, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Pütz J, Quinnan M, Rädel L, Rameez M, Rawlins K, Redl P, Rees I, Reimann R, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rodrigues JP, Rongen M, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Sander HG, Santander M, Sarkar S, Schatto K, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Shanidze R, Sheremata C, Smith MW, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stanisha NA, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Strotjohann NL, Sullivan GW, Taavola H, Taboada I, Tamburro A, Tepe A, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Tosi D, Tselengidou M, Unger E, Usner M, Vallecorsa S, van Eijndhoven N, Vandenbroucke J, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Wallraff M, Weaver Ch, Wellons M, Wendt C, Westerhoff S, Whelan BJ, Whitehorn N, Wichary C, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, and Zoll M
Abstract: A search for high-energy neutrinos interacting within the IceCube detector between 2010 and 2012 provided the first evidence for a high-energy neutrino flux of extraterrestrial origin. Results from an analysis using the same methods with a third year (2012-2013) of data from the complete IceCube detector are consistent with the previously reported astrophysical flux in the 100 TeV-PeV range at the level of 10(-8) GeV cm-2 s-1 sr-1 per flavor and reject a purely atmospheric explanation for the combined three-year data at 5.7σ. The data are consistent with expectations for equal fluxes of all three neutrino flavors and with isotropic arrival directions, suggesting either numerous or spatially extended sources. The three-year data set, with a live time of 988 days, contains a total of 37 neutrino candidate events with deposited energies ranging from 30 to 2000 TeV. The 2000-TeV event is the highest-energy neutrino interaction ever observed.
Published: 2014
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15. Evidence for high-energy extraterrestrial neutrinos at the IceCube detector.

Author: 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, Benabderrahmane ML, BenZvi S, 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, Day M, De Clercq C, De Ridder S, Desiati P, de Vries KD, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eichmann 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, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grandmont DT, Grant D, Groß A, 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, 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, Maggi G, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, 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, O'Murchadha A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, 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, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Shanidze R, Sheremata C, Smith MW, 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, Tepe A, Ter-Antonyan S, Tešić G, Tilav S, Toale PA, Toscano S, Unger E, Usner M, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Weaver Ch, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, and Zoll M
Abstract: We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube neutrino detector conducted between May 2010 and May 2012. The search follows up on the previous detection of two PeV neutrino events, with improved sensitivity and extended energy coverage down to about 30 TeV. Twenty-six additional events were observed, substantially more than expected from atmospheric backgrounds. Combined, both searches reject a purely atmospheric origin for the 28 events at the 4σ level. These 28 events, which include the highest energy neutrinos ever observed, have flavors, directions, and energies inconsistent with those expected from the atmospheric muon and neutrino backgrounds. These properties are, however, consistent with generic predictions for an additional component of extraterrestrial origin.
Published: 2013
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16. Measurement of atmospheric neutrino oscillations with IceCube.

Author: 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, Grandmont DT, Grant D, Groß A, 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, Palazzo 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 MW, 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, Tepe 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 Ch, 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, and Zoll M
Abstract: 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 (~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 5σ significance. In a two-neutrino flavor formalism, our data are best described by the atmospheric neutrino oscillation parameters |Δm(32)(2)|=(2.3(-0.5)(+0.6))×10(-3) eV(2) and sin(2)(2θ(23))>0.93, and maximum mixing is favored.
Published: 2013
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17. First observation of PeV-energy neutrinos with IceCube.

Author: 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 MW, 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 Ch, 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, and Zoll M
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.
Published: 2013
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18. Measurement of the atmospheric νe flux in IceCube.

Author: 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, Beattie K, 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, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, 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, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, 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, 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, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak 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, Panknin S, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, 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, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MW, 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, 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 Ch, 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, and Zoll M
Abstract: We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low-energy extension. Techniques to identify neutrinos interacting within the DeepCore volume and veto muons originating outside the detector are demonstrated. A sample of 1029 events is observed in 281 days of data, of which 496±66(stat)±88(syst) are estimated to be cascade events, including both electron neutrino and neutral current events. The rest of the sample includes residual backgrounds due to atmospheric muons and charged current interactions of atmospheric muon neutrinos. The flux of the atmospheric electron neutrinos is consistent with models of atmospheric neutrinos in this energy range. This constitutes the first observation of electron neutrinos and neutral current interactions in a very large volume neutrino telescope optimized for the TeV energy range.
Published: 2013
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19. Search for dark matter annihilations in the sun with the 79-string IceCube detector.

Author: 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, Beattie K, 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, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, 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, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, 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, 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, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak 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, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, 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, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MW, 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, 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 Ch, 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, and Zoll M
Abstract: We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore subarray is included in the analysis, lowering the energy threshold and extending the search to the austral summer. The 317 days of data collected between June 2010 and May 2011 are consistent with the expected background from atmospheric muons and neutrinos. Upper limits are set on the dark matter annihilation rate, with conversions to limits on spin-dependent and spin-independent scattering cross sections of weakly interacting massive particles (WIMPs) on protons, for WIMP masses in the range 20-5000 GeV/c2. These are the most stringent spin-dependent WIMP-proton cross section limits to date above 35 GeV/c2 for most WIMP models.
Published: 2013
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20. Limits on neutrino emission from gamma-ray bursts with the 40 string IceCube detector.

Author: Abbasi R, Abdou Y, Abu-Zayyad T, Adams J, Aguilar JA, Ahlers M, Andeen K, Auffenberg J, Bai X, Baker M, Barwick SW, Bay R, Bazo Alba JL, Beattie K, Beatty JJ, Bechet S, Becker JK, Becker KH, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bose D, Böser S, Botner O, Braun J, Brown AM, Buitink S, Carson M, Chirkin D, Christy B, Clem J, Clevermann F, Cohen S, Colnard C, Cowen DF, D'Agostino MV, Danninger M, Daughhetee J, Davis JC, De Clercq C, Demirörs L, Depaepe O, Descamps F, Desiati P, de Vries-Uiterweerd G, DeYoung T, Díaz-Vélez JC, Dierckxsens M, Dreyer J, Dumm JP, Ehrlich R, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Foerster MM, Fox BD, Franckowiak A, Franke R, Gaisser TK, Gallagher J, Geisler M, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Goodman JA, Grant D, Griesel T, Gross A, Grullon S, Gurtner M, Ha C, Hallgren A, Halzen F, Han K, Hanson K, Heinen D, Helbing K, Herquet P, Hickford S, Hill GC, Hoffman KD, Homeier A, Hoshina K, Hubert D, Huelsnitz W, Hülss JP, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobsen J, Japaridze GS, Johansson H, Joseph JM, Kampert KH, Kappes A, Karg T, Karle A, Kelley JL, Kemming N, Kenny P, Kiryluk J, Kislat F, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper S, Koskinen DJ, Kowalski M, Kowarik T, Krasberg M, Krings T, Kroll G, Kuehn K, Kuwabara T, Labare M, Lafebre S, Laihem K, Landsman H, Larson MJ, Lauer R, Lehmann R, Lünemann J, Madsen J, Majumdar P, Marotta A, Maruyama R, Mase K, Matis HS, Meagher K, Merck M, Mészáros P, Meures T, Middell E, Milke N, Miller J, Montaruli T, Morse R, Movit SM, Nahnhauer R, Nam JW, Naumann U, Niessen P, Nygren DR, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Ono M, Panknin S, Paul L, Pérez de los Heros C, Petrovic J, Piegsa A, Pieloth D, Porrata R, Posselt J, Price PB, Prikockis M, Przybylski GT, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Rizzo A, Rodrigues JP, Roth P, Rothmaier F, Rott C, Ruhe T, Rutledge D, Ruzybayev B, Ryckbosch D, Sander HG, Santander M, Sarkar S, Schatto K, Schmidt T, Schoenwald A, Schukraft A, Schultes A, Schulz O, Schunck M, Seckel D, Semburg B, Seo SH, Sestayo Y, Seunarine S, Silvestri A, Slipak A, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stephens G, Stezelberger T, Stokstad RG, Stoyanov S, Strahler EA, Straszheim T, Sullivan GW, Swillens Q, Taavola H, Taboada I, Tamburro A, Tarasova O, Tepe A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Tosi D, Turčan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, van Santen J, Vehring M, Voge M, Voigt B, Walck C, Waldenmaier T, Wallraff M, Walter M, Weaver C, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wischnewski R, Wissing H, Wolf M, Woschnagg K, Xu C, Xu XW, Yodh G, Yoshida S, and Zarzhitsky P
Abstract: IceCube has become the first neutrino telescope with a sensitivity below the TeV neutrino flux predicted from gamma-ray bursts if gamma-ray bursts are responsible for the observed cosmic-ray flux above 10(18) eV. Two separate analyses using the half-complete IceCube detector, one a dedicated search for neutrinos from pγ interactions in the prompt phase of the gamma-ray burst fireball and the other a generic search for any neutrino emission from these sources over a wide range of energies and emission times, produced no evidence for neutrino emission, excluding prevailing models at 90% confidence.
Published: 2011
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21. Extending the search for neutrino point sources with IceCube above the horizon.

Author: Abbasi R, Abdou Y, Abu-Zayyad T, Adams J, Aguilar JA, Ahlers M, Andeen K, Auffenberg J, Bai X, Baker M, Barwick SW, Bay R, Bazo Alba JL, Beattie K, Beatty JJ, Bechet S, Becker JK, Becker KH, Benabderrahmane ML, Berdermann J, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Bissok M, Blaufuss E, Boersma DJ, Bohm C, Botner O, Bradley L, Braun J, Breder D, Carson M, Castermans T, Chirkin D, Christy B, Clem J, Cohen S, Cowen DF, D'Agostino MV, Danninger M, Day CT, De Clercq C, Demirörs L, Depaepe O, Descamps F, Desiati P, de Vries-Uiterweerd G, DeYoung T, Díaz-Vélez JC, Dreyer J, Dumm JP, Duvoort MR, Edwards WR, Ehrlich R, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Feusels T, Filimonov K, Finley C, Foerster MM, Fox BD, Franckowiak A, Franke R, Gaisser TK, Gallagher J, Ganugapati R, Gerhardt L, Gladstone L, Goldschmidt A, Goodman JA, Gozzini R, Grant D, Griesel T, Gross A, Grullon S, Gunasingha RM, Gurtner M, Ha C, Hallgren A, Halzen F, Han K, Hanson K, Hasegawa Y, Helbing K, Herquet P, Hickford S, Hill GC, Hoffman KD, Homeier A, Hoshina K, Hubert D, Huelsnitz W, Hülss JP, Hulth PO, Hultqvist K, Hussain S, Imlay RL, Inaba M, Ishihara A, Jacobsen J, Japaridze GS, Johansson H, Joseph JM, Kampert KH, Kappes A, Karg T, Karle A, Kelley JL, Kemming N, Kenny P, Kiryluk J, Kislat F, Klein SR, Knops S, Kohnen G, Kolanoski H, Köpke L, Koskinen DJ, Kowalski M, Kowarik T, Krasberg M, Krings T, Kroll G, Kuehn K, Kuwabara T, Labare M, Lafebre S, Laihem K, Landsman H, Lauer R, Lehmann R, Lennarz D, Lundberg J, Lünemann J, Madsen J, Majumdar P, Maruyama R, Mase K, Matis HS, McParland CP, Meagher K, Merck M, Mészáros P, Meures T, Middell E, Milke N, Miyamoto H, Montaruli T, Morse R, Movit SM, Nahnhauer R, Nam JW, Niessen P, Nygren DR, Odrowski S, Olivas A, Olivo M, Ono M, Panknin S, Patton S, Paul L, Pérez de los Heros C, Petrovic J, Piegsa A, Pieloth D, Pohl AC, Porrata R, Potthoff N, Price PB, Prikockis M, Przybylski GT, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Rizzo A, Rodrigues JP, Roth P, Rothmaier F, Rott C, Roucelle C, Rutledge D, Ruzybayev B, Ryckbosch D, Sander HG, Sarkar S, Schatto K, Schlenstedt S, Schmidt T, Schneider D, Schukraft A, Schulz O, Schunck M, Seckel D, Semburg B, Seo SH, Sestayo Y, Seunarine S, Silvestri A, Slipak A, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stephens G, Stezelberger T, Stokstad RG, Stoufer MC, Stoyanov S, Strahler EA, Straszheim T, Sullivan GW, Swillens Q, Taboada I, Tamburro A, Tarasova O, Tepe A, Ter-Antonyan S, Terranova C, Tilav S, Toale PA, Tooker J, Tosi D, Turcan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, van Santen J, Voigt B, Walck C, Waldenmaier T, Wallraff M, Walter M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Wiedemann A, Wikström G, Williams DR, Wischnewski R, Wissing H, Woschnagg K, Xu C, Xu XW, Yodh G, and Yoshida S
Abstract: Point source searches with the IceCube neutrino telescope have been restricted to one hemisphere, due to the exclusive selection of upward going events as a way of rejecting the atmospheric muon background. We show that the region above the horizon can be included by suppressing the background through energy-sensitive cuts. This improves the sensitivity above PeV energies, previously not accessible for declinations of more than a few degrees below the horizon due to the absorption of neutrinos in Earth. We present results based on data collected with 22 strings of IceCube, extending its field of view and energy reach for point source searches. No significant excess above the atmospheric background is observed in a sky scan and in tests of source candidates. Upper limits are reported, which for the first time cover point sources in the southern sky up to EeV energies.
Published: 2009
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21 results on '"Meures, T."'

1. eV-Scale Sterile Neutrino Search Using Eight Years of Atmospheric Muon Neutrino Data from the IceCube Neutrino Observatory.

2. Characteristics of the Diffuse Astrophysical Electron and Tau Neutrino Flux with Six Years of IceCube High Energy Cascade Data.

3. Observation of Radar Echoes from High-Energy Particle Cascades.

4. Time-Integrated Neutrino Source Searches with 10 Years of IceCube Data.

5. Constraints on Minute-Scale Transient Astrophysical Neutrino Sources.

6. Measurement of Atmospheric Neutrino Oscillations at 6-56 GeV with IceCube DeepCore.

7. Search for neutrinos from decaying dark matter with IceCube: IceCube Collaboration.

8. Measurement of the ν μ energy spectrum with IceCube-79: IceCube Collaboration.

9. Constraints on Ultrahigh-Energy Cosmic-Ray Sources from a Search for Neutrinos above 10 PeV with IceCube.

10. Searches for Sterile Neutrinos with the IceCube Detector.

11. Evidence for Astrophysical Muon Neutrinos from the Northern Sky with IceCube.

12. Flavor Ratio of Astrophysical Neutrinos above 35 TeV in IceCube.

13. Development of a general analysis and unfolding scheme and its application to measure the energy spectrum of atmospheric neutrinos with IceCube: IceCube Collaboration.

14. Observation of high-energy astrophysical neutrinos in three years of IceCube data.

15. Evidence for high-energy extraterrestrial neutrinos at the IceCube detector.

16. Measurement of atmospheric neutrino oscillations with IceCube.

17. First observation of PeV-energy neutrinos with IceCube.

18. Measurement of the atmospheric νe flux in IceCube.

19. Search for dark matter annihilations in the sun with the 79-string IceCube detector.

20. Limits on neutrino emission from gamma-ray bursts with the 40 string IceCube detector.

21. Extending the search for neutrino point sources with IceCube above the horizon.

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21 results on '"Meures, T."'

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