Flavor Ratio of Astrophysical Neutrinos above 35 TeV in IceCube.

@article{Aartsen2015FlavorRO,
  title={Flavor Ratio of Astrophysical Neutrinos above 35 TeV in IceCube.},
  author={Mark G. Aartsen and Markus Ackermann and J. H. Adams and Juan Antonio Aguilar and Markus Ahlers and Maximilian Ahrens and David Altmann and Tyler Brooks Anderson and Carlos A. Arguelles and Timothy C. Arlen and Jan Auffenberg and Xinhua Bai and Steven W. Barwick and V. Baum and Ryan Bay and James J. Beatty and Julia Becker Tjus and Kathrin Becker and Segev BenZvi and Patrick Berghaus and David Berley and Elisa Bernardini and Anna Bernhard and David Z. Besson and Gary Binder and Daniel Bindig and Martin Bissok and Erik Blaufuss and Jan Blumenthal and David J. Boersma and Christian Bohm and Fabian Bos and Debanjan Bose and Sebastian B{\"o}ser and Olga Botner and Lionel Brayeur and Hans-Peter Bretz and A. M. Brown and N. Buzinsky and James Casey and Martin Casier and E. Cheung and Dmitry Chirkin and Asen Christov and Brian John Christy and Ken Clark and Lew Classen and Fabian Clevermann and Stefan Coenders and D. F. Cowen and A. H. Cruz Silva and Jacob Daughhetee and J. C. Davis and Melanie Day and Jo{\~a}o Pedro Athayde Marcondes de Andr{\'e} and C. De Clercq and Hans Peter Dembinski and Sam De Ridder and Paolo Desiati and K. D. de Vries and M. de With and Tyce DeYoung and Juan Carlos D{\'i}az-V{\'e}lez and Jonathan Dumm and Matthew Dunkman and Ryan Eagan and Benjamin Eberhardt and Thomas Ehrhardt and Bj{\"o}rn Eichmann and Jonathan Eisch and Sebastian Euler and Paul A. Evenson and O. Fadiran and Ali R. Fazely and Anatoli Fedynitch and Jacob Feintzeig and John Felde and Kirill Filimonov and Chad Finley and Tobias Fischer-Wasels and Samuel Flis and Katharina Frantzen and T. Fuchs and Thomas K. Gaisser and Romain Gaior and J. Gallagher and Lisa Marie Gerhardt and D. Gier and Laura E. Gladstone and Thorsten Gl{\"u}senkamp and Azriel Goldschmidt and Geraldina Golup and J. G. Gonzalez and Jordan A. Goodman and Dariusz G{\'o}ra and Darren Grant and Pavel Gretskov and John C. Groh and Axel Gro{\ss} and Chang Hyon Ha and Christian Haack and Abd Al Karim Haj Ismail and P. van der Hallen and Allan Hallgren and Francis Halzen and Kael D. Hanson and Dustin Hebecker and David Heereman and Dirk Heinen and Klaus Helbing and Robert Eugene Hellauer and Denise Hellwig and Stephanie Virginia Hickford and Gary C. Hill and K. D. Hoffman and Ruth Hoffmann and Andreas Homeier and Kotoyo Hoshina and Feifei Huang and Warren Huelsnitz and Per Olof Hulth and Klas Hultqvist and Aya Ishihara and Emanuel Jacobi and Janet S. Jacobsen and George S. Japaridze and Kyle Jero and Matej Jurkovi{\vc} and Basho Kaminsky and Alexander Kappes and Timo Karg and Albrecht Karle and Matthew Kauer and Azadeh Keivani and John Lawrence Kelley and Ali Kheirandish and Joanna Kiryluk and J. Kl{\"a}s and Spencer R. Klein and Jan-Hendrik K{\"o}hne and Georges Kohnen and Hermann Kolanoski and A. Koob and Lutz K{\"o}pke and Claudio Kopper and Sandro Kopper and D. Jason Koskinen and Marek Kowalski and Anna Kriesten and Kai Michael Krings and G{\"o}sta Kroll and Mike Kroll and Jan Kunnen and Naoko Kurahashi and Takao Kuwabara and Mathieu L. M. Labare and Justin Lanfranchi and Donald T. Larsen and Michael James Larson and Mariola Lesiak-Bzdak and Martin Leuermann and Jan D. L{\"u}nemann and J. Madsen and Giuliano Maggi and Reina Maruyama and Keiichi Mase and Howard S. Matis and Ryan Maunu and Frank McNally and Kevin J. Meagher and Morten Medici and Athina Meli and Thomas Meures and Sandra Miarecki and Eike Middell and Erin Middlemas and Natalie Milke and J. Miller and Lars Mohrmann and Teresa Montaruli and Robert Morse and Rolf Nahnhauer and Uwe Naumann and Hans Niederhausen and Sarah C. Nowicki and David R. Nygren and Anna Obertacke and Alexander R. Olivas and Ahmad Omairat and Aongus O'Murchadha and Tomasz Palczewski and Larissa Paul and {\"O}mer Penek and Joshua A. Pepper and Carlos P{\'e}rez de los Heros and Carl Pfendner and Damian Pieloth and Elisa Pinat and Jonas Posselt and P. Buford Price and Gerald T. Przybylski and J. P{\"u}tz and Melissa Quinnan and Leif R{\"a}del and M. Rameez and Katherine Rawlins and Peter Christian Redl and I. Rees and Ren{\'e} Reimann and Matthew Relich and Elisa Resconi and Wolfgang Rhode and Michael Richman and Benedikt Riedel and S. M. Robertson and Jo{\~a}o Paulo Rodrigues and Martin Rongen and Carsten Rott and Tim Ruhe and Bakhtiyar Ruzybayev and Dirk Ryckbosch and Sabine M. Saba and Heinz Georg Sander and J. Sandroos and Marcos Santander and Subir Sarkar and Kai Schatto and Florian Scheriau and Timothy W. Schmidt and Martin Schmitz and Sebastian Schoenen and Sebastian Sch{\"o}neberg and Arne Sch{\"o}nwald and Anne Schukraft and Lukas Schulte and O. Schulz and David Seckel and Yolanda Sestayo and Surujhdeo Seunarine and Rezo Shanidze and M. W. E. Smith and Dennis Soldin and G. M. Spiczak and Christian Spiering and Michael Stamatikos and Todor Stanev and Nick A. Stanisha and Alexander Stasik and Thorsten Stezelberger and Robert G. Stokstad and Achim St{\"o}{\ss}l and Erik A. Strahler and Rickard Str{\"o}m and Nora Linn Strotjohann and Gregory W. Sullivan and Henric Taavola and Ignacio Taboada and Alessio Tamburro and Samvel Ter-Antonyan and Andrii Terliuk and Gordana Tesic and Serap Tilav and Patrick A. Toale and M. N. Tobin and Delia Tosi and Maria Tselengidou and Elisabeth Unger and Marcel Usner and Sofia Vallecorsa and Nick van Eijndhoven and Justin Vandenbroucke and J. van Santen and Stijn Vanheule and Markus Vehring and Markus Voge and Matthias Vraeghe and Christian Walck and Marius Wallraff and C. Weaver and Mark Wellons and C. Wendt and Stefan Westerhoff and B. J. Whelan and Nathan Whitehorn and C. Wichary and Klaus Wiebe and Christopher Wiebusch and D. R. W. Williams and Henrike Wissing and Martin Wolf and Terri R. Wood and Kurt Woschnagg and D. L. Xu and X. Xu and Y. Xu and Juan Pablo Y{\'a}{\~n}ez and Gaurang B. Yodh and Shigeru Yoshida and Pavel Zarzhitsky and Jan Ziemann and Marcel Zoll},
  journal={Physical review letters},
  year={2015},
  volume={114 17},
  pages={
          171102
        }
}
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:f… 

Figures from this paper

The flavor composition of astrophysical neutrinos after 8 years of IceCube: an indication of neutron decay scenario?
In this work we present an updated study of the flavor composition suggested by astrophysical neutrinos observed by IceCube. The main novelties compared to previous studies are the following: (1) we
Sterile neutrinos and flavor ratios in IceCube
The flavor composition of astrophysical neutrinos observed in neutrino telescopes is a powerful discriminator between different astrophysical neutrino production mechanisms and can also teach us
High-energy neutrino interaction physics with IceCube
  • S. Klein
  • Physics
    EPJ Web of Conferences
  • 2019
Although they are best known for studying astrophysical neutrinos, neutrino telescopes like IceCube can study neutrino interactions, at energies far above those that are accessible at accelerators.
Fermi/LAT counterparts of IceCube neutrinos above 100 TeV
The IceCube Collaboration has published four years of data and the observed neutrino flux is significantly in excess of the expected atmospheric background. Due to the steeply falling atmospheric
How Unequal Fluxes of High Energy Astrophysical Neutrinos and Antineutrinos can Fake New Physics
Flavor ratios of very high energy astrophysical neutrinos, which can be studied at the Earth by a neutrino telescope such as IceCube, can serve to diagnose their production mechanism at the
Invisible Neutrino Decay Could Resolve IceCube's Track and Cascade Tension.
TLDR
The invisible neutrino decay model predicts a reduction of 59% in the number of observed ν_{τ} events which is consistent with the current observational deficit and improves the standard nondecay scenario of more than 3σ while remaining consistent with all other multimessenger observations.
Probing strong dynamics with cosmic neutrinos
IceCube has observed 80 astrophysical neutrino candidates in the energy range 0.02 < E_\nu/PeV < 2. Deep inelastic scattering of these neutrinos with nucleons on Antarctic ice sheet probe
The importance of observing astrophysical tau neutrinos
The evidence of a new population of diffuse high-energy neutrinos, obtained by IceCube, has opened a new era in the field of neutrino physics. Up to now the events detected are still without any
Galactic Neutrinos in the TeV to PeV Range
We study the contribution of Galactic sources to the flux of astrophysical neutrinos recently observed by the IceCube Collaboration. We show that in the simplest model of homogeneous and isotropic
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 156 REFERENCES
Atmospheric and Astrophysical Neutrinos above 1 TeV Interacting in IceCube
The IceCube Neutrino Observatory was designed primarily to search for high-energy (TeV-PeV) neutLrinos produced in distant astrophysical objects. A search for. greater than or similar to 100 TeV
Flavor composition of the high-energy neutrino events in IceCube.
TLDR
The IceCube experiment has recently reported the observation of 28 high-energy neutrino events, separated into 21 showers and 7 muon tracks, consistent with an extraterrestrial origin, which is found to suggest either a misunderstanding of the expected background events or a misidentification of tracks as showers, or even more compellingly, some exotic physics which deviates from the standard scenario.
Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
TLDR
The presence of a high-energy neutrino flux containing the most energetic neutrinos ever observed is revealed, including 28 events at energies between 30 and 1200 TeV, although the origin of this flux is unknown and the findings are consistent with expectations for a neutRino population with origins outside the solar system.
Search for a diffuse flux of astrophysical muon neutrinos with the IceCube 59-string configuration
A search for high-energy neutrinos was performed using data collected by the IceCube Neutrino Observatory from May 2009 to May 2010, when the array was running in its 59-string configuration. The
Observation of high-energy astrophysical neutrinos in three years of IceCube data.
TLDR
Results from an analysis with a third year 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.
Neutrino decays over cosmological distances and the implications for neutrino telescopes
We discuss decays of ultra-relativistic neutrinos over cosmological distances by solving the decay equation in terms of its redshift dependence. We demonstrate that there are significant conceptual
INTRINSIC AND OSCILLATED ASTROPHYSICAL NEUTRINO FLAVOR RATIOS REVISITED
The pp interactions taking place in the cosmos around us are a source of the astrophysical neutrinos of all the three flavors. In these interactions, the electron and the muon neutrinos mainly come
Astrophysical neutrinos: flavor ratios depend on energy.
TLDR
Electromagnetic (and adiabatic) energy losses of pi's and mu's modify the flavor ratio of neutrinos produced by pi decay in astrophysical sources, which affects the ratio of ve flux to total v flux, which may be measured at the resonance.
...
1
2
3
4
5
...