Echo Technique to Distinguish Flavors of Astrophysical Neutrinos
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Echo Technique to Distinguish Flavors of Astrophysical Neutrinos. / Li, Shirley Weishi; Bustamante, Mauricio; Beacom, John F.
In: Physical Review Letters, Vol. 122, No. 15, 151101, 16.04.2019.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Echo Technique to Distinguish Flavors of Astrophysical Neutrinos
AU - Li, Shirley Weishi
AU - Bustamante, Mauricio
AU - Beacom, John F.
N1 - 12 pages, 9 figures, comments welcome
PY - 2019/4/16
Y1 - 2019/4/16
N2 - The flavor composition of high-energy astrophysical neutrinos is a rich observable. However, present analyses cannot effectively distinguish particle showers induced by $\nu_e$ versus $\nu_\tau$. We show that this can be accomplished by measuring the intensities of the delayed, collective light emission from muon decays and neutron captures, which are, on average, greater for $\nu_\tau$ than for $\nu_e$. This new technique would significantly improve tests of the nature of astrophysical sources and of neutrino properties. We discuss the promising prospects for implementing it in IceCube and other detectors.
AB - The flavor composition of high-energy astrophysical neutrinos is a rich observable. However, present analyses cannot effectively distinguish particle showers induced by $\nu_e$ versus $\nu_\tau$. We show that this can be accomplished by measuring the intensities of the delayed, collective light emission from muon decays and neutron captures, which are, on average, greater for $\nu_\tau$ than for $\nu_e$. This new technique would significantly improve tests of the nature of astrophysical sources and of neutrino properties. We discuss the promising prospects for implementing it in IceCube and other detectors.
KW - astro-ph.HE
KW - hep-ph
U2 - 10.1103/PhysRevLett.122.151101
DO - 10.1103/PhysRevLett.122.151101
M3 - Journal article
C2 - 31050546
VL - 122
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 15
M1 - 151101
ER -
ID: 184745488