First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition
The IceCube Neutrino Observatory at the South Pole, which detects Cherenkov light from charged particles produced in neutrino interactions, firmly established the existence of an astrophysical high-energy neutrino component. The expected neutrino flavor composition on Earth is $\nu_e:\nu_{\mu}:\nu_{...
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ftdesyvdb:oai:bib-pubdb1.desy.de:434816 2023-05-15T18:22:41+02:00 First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition Stachurska, Juliana IceCube Collaboration DE 2019 https://bib-pubdb1.desy.de/record/434816 https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2020-00359%22 eng eng info:eu-repo/semantics/altIdentifier/doi/10.3204/PUBDB-2020-00359 info:eu-repo/semantics/altIdentifier/arxiv/arXiv:1908.05506 https://bib-pubdb1.desy.de/record/434816 https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2020-00359%22 info:eu-repo/semantics/openAccess PoS 1015 (2019). doi:10.3204/PUBDB-2020-00359 36th International Cosmic Ray Conference , Madison, Wisconsin, USA, 2019-07-24 - 2019-08-01 neutrino: flavor neutrino: interaction pi: decay radiation: Cherenkov IceCube new physics cascade charged particle observatory topology tracks neutrino muon pole info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion 2019 ftdesyvdb https://doi.org/10.3204/PUBDB-2020-00359 2022-06-30T20:20:51Z The IceCube Neutrino Observatory at the South Pole, which detects Cherenkov light from charged particles produced in neutrino interactions, firmly established the existence of an astrophysical high-energy neutrino component. The expected neutrino flavor composition on Earth is $\nu_e:\nu_{\mu}:\nu_{\tau}$ of about 1:1:1 for neutrinos produced in astrophysical sources through pion decay. A measurement of the flavor composition on Earth can provide important constraints on sources and production mechanisms within the standard model, and can also constrain various beyond-standard-model processes. Here the measurement of the flavor composition performed on IceCube's High-Energy Starting Events sample with a livetime of about 7.5 years is presented. IceCube is directly sensitive to each neutrino flavor via the single cascade, track and double cascade event topologies. In IceCube, $\nu_{\tau}$-CC interactions above $\sim$ 100 TeV can produce resolvable double cascades, breaking the degeneracy between $\nu_e$ and $\nu_{\tau}$ present at lower energies. IceCube's first two identified double cascades are presented and the properties of the two $\nu_{\tau}$ candidates are discussed. Conference Object South pole DESY Publication Database (PUBDB) South Pole |
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DESY Publication Database (PUBDB) |
op_collection_id |
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language |
English |
topic |
neutrino: flavor neutrino: interaction pi: decay radiation: Cherenkov IceCube new physics cascade charged particle observatory topology tracks neutrino muon pole |
spellingShingle |
neutrino: flavor neutrino: interaction pi: decay radiation: Cherenkov IceCube new physics cascade charged particle observatory topology tracks neutrino muon pole Stachurska, Juliana IceCube Collaboration First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition |
topic_facet |
neutrino: flavor neutrino: interaction pi: decay radiation: Cherenkov IceCube new physics cascade charged particle observatory topology tracks neutrino muon pole |
description |
The IceCube Neutrino Observatory at the South Pole, which detects Cherenkov light from charged particles produced in neutrino interactions, firmly established the existence of an astrophysical high-energy neutrino component. The expected neutrino flavor composition on Earth is $\nu_e:\nu_{\mu}:\nu_{\tau}$ of about 1:1:1 for neutrinos produced in astrophysical sources through pion decay. A measurement of the flavor composition on Earth can provide important constraints on sources and production mechanisms within the standard model, and can also constrain various beyond-standard-model processes. Here the measurement of the flavor composition performed on IceCube's High-Energy Starting Events sample with a livetime of about 7.5 years is presented. IceCube is directly sensitive to each neutrino flavor via the single cascade, track and double cascade event topologies. In IceCube, $\nu_{\tau}$-CC interactions above $\sim$ 100 TeV can produce resolvable double cascades, breaking the degeneracy between $\nu_e$ and $\nu_{\tau}$ present at lower energies. IceCube's first two identified double cascades are presented and the properties of the two $\nu_{\tau}$ candidates are discussed. |
format |
Conference Object |
author |
Stachurska, Juliana IceCube Collaboration |
author_facet |
Stachurska, Juliana IceCube Collaboration |
author_sort |
Stachurska, Juliana |
title |
First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition |
title_short |
First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition |
title_full |
First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition |
title_fullStr |
First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition |
title_full_unstemmed |
First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor Composition |
title_sort |
first double cascade tau neutrino candidates in icecube and a new measurement of the flavor composition |
publishDate |
2019 |
url |
https://bib-pubdb1.desy.de/record/434816 https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2020-00359%22 |
op_coverage |
DE |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
PoS 1015 (2019). doi:10.3204/PUBDB-2020-00359 36th International Cosmic Ray Conference , Madison, Wisconsin, USA, 2019-07-24 - 2019-08-01 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3204/PUBDB-2020-00359 info:eu-repo/semantics/altIdentifier/arxiv/arXiv:1908.05506 https://bib-pubdb1.desy.de/record/434816 https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2020-00359%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3204/PUBDB-2020-00359 |
_version_ |
1766202092767150080 |