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Title: Constraints on the ultrahigh-energy cosmic neutrino flux from the fourth flight of ANITA

Journal Article · · Physical Review. D.

The ANtarctic Impulsive Transient Antenna (ANITA) NASA long-duration balloon payload completed its fourth flight in December 2016, after 28 days of flight time. ANITA is sensitive to impulsive broadband radio emission from interactions of ultrahigh-energy neutrinos in polar ice (Askaryan emission). We present the results of two separate blind analyses searching for signals from Askaryan emission in the data from the fourth flight of ANITA. The more sensitive analysis, with a better expected limit, has a background estimate of $${0.64}_{-0.45}^{+0.69}$$ and an analysis efficiency of 82 ± 2 % . The second analysis has a background estimate of 0.34 $$^{+0.66}_{-0.16}$$ and an analysis efficiency of 71 ± 6 % . Each analysis found one event in the signal region, consistent with the background estimate for each analysis. The resulting limit further tightens the constraints on the diffuse flux of ultrahigh-energy neutrinos at energies above 1019.5 eV .

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE; National Aeronautics and Space Administration (NASA); National Science Foundation (NSF)
Contributing Organization:
ANITA Collaboration
Grant/Contract Number:
AC02-76SF00515; NNX15AC24G; 1255557
OSTI ID:
1546753
Journal Information:
Physical Review. D., Vol. 99, Issue 12; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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Cited By (6)

Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory journal October 2019
Limits on point-like sources of ultra-high-energy neutrinos with the Pierre Auger Observatory journal November 2019
Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory text January 2019
Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory text January 2019
Anomalous ANITA air shower events and tau decays text January 2019
Zee-Burst: A New Probe of Neutrino Non-Standard Interactions at IceCube text January 2019

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