IceCube High Energy Starting Events at 7.5 Years -- New Measurements of Flux and Flavor

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. Here I present IceCube’s High-Energy Starting Event sample and the new resu...

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Bibliographic Details
Published in:EPJ Web of Conferences
Main Authors: Stachurska, Juliana, IceCube Collaboration
Format: Conference Object
Language:English
Published: EDP Sciences 2019
Subjects:
info:eu-repo/classification/ddc/530
talk: Dubna 2018/10/02
neutrino: flavor
neutrino: interaction
flavor: ratio
energy: threshold
energy: high
radiation: Cherenkov
IceCube
topology
cascade
charged particle
observatory
tracks
neutrino: flux
experimental results
South Pole
South pole
Online Access:https://bib-pubdb1.desy.de/record/434819
https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2020-00362%22
Description
Summary: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. Here I present IceCube’s High-Energy Starting Event sample and the new results obtained with a livetime of about 7.5 years. I will focus on the new measurement of the flavor composition performed using this sample. IceCube is directly sensitive to each neutrino flavor via the single cascade, track and double cascade event topologies, the latter being the topology produced in tauneutrino interactions above an energy threshold of ~100 TeV. A measurement of the flavor ratio on Earth can provide important constraints on sources and production mechanisms within the standard model, and also constrain various beyond-standard-model processes.

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