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Detection of astrop...
Detection of astrophysical tau neutrino candidates in IceCube
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- Abbasi, R. (author)
- Loyola Univ Chicago, Dept Phys, Chicago, IL 60660 USA
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- Botner, Olga (author)
- Uppsala universitet,Högenergifysik
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- Burgman, Alexander (author)
- Uppsala universitet,Högenergifysik
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- Hallgren, Allan, 1951- (author)
- Uppsala universitet,Högenergifysik
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- O'Sullivan, Erin (author)
- Uppsala universitet,Högenergifysik
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- Pérez de los Heros, Carlos (author)
- Uppsala universitet,Högenergifysik
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- Unger, Elisabeth (author)
- Uppsala universitet,Högenergifysik
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- Zhang, Z. (author)
- SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
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- Ahrens, Maryon (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Deoskar, Kunal (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Finley, Chad (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Hultqvist, Klas (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Jansson, Matti (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Walck, Christian (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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(creator_code:org_t)
- 2022-11-15
- 2022
- English.
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In: European Physical Journal C. - : Springer. - 1434-6044 .- 1434-6052. ; 82
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https://uu.diva-port... (primary) (Raw object)
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Abstract
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- High-energy tau neutrinos are rarely produced in atmospheric cosmic-ray showers or at cosmic particle accelerators, but are expected to emerge during neutrino propagation over cosmic distances due to flavor mixing. When high energy tau neutrinos interact inside the IceCube detector, two spatially separated energy depositions may be resolved, the first from the charged current interaction and the second from the tau lepton decay. We report a novel analysis of 7.5 years of IceCube data that identifies two candidate tau neutrinos among the 60 "High-Energy Starting Events" (HESE) collected during that period. The HESE sample offers high purity, all-sky sensitivity, and distinct observational signatures for each neutrino flavor, enabling a new measurement of the flavor composition. The measured astrophysical neutrino flavor composition is consistent with expectations, and an astrophysical tau neutrino flux is indicated at 2.8 sigma significance.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Abbasi, R.
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Botner, Olga
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Burgman, Alexand ...
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Hallgren, Allan, ...
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O'Sullivan, Erin
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Pérez de los Her ...
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show more...
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Unger, Elisabeth
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Zhang, Z.
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Ahrens, Maryon
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Deoskar, Kunal
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Finley, Chad
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Hultqvist, Klas
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Jansson, Matti
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Walck, Christian
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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European Physica ...
- By the university
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Uppsala University
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Stockholm University