Observational constraints on the ultrahigh energy cosmic neutrino flux from the second flight of the ANITA experiment

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.022004· OSTI ID:21410087

Gorham, P W; Allison, P; DuVernois, M; Hill, B; Matsuno, S; Miki, C; Romero-Wolf, A; Ruckman, L; Varner, G S ^[1]; Baughman, B M; Beatty, J J; Grashorn, E W; Mercurio, B C; Palladino, K ^[2]; Belov, K; Hoover, S; Saltzberg, D; Vieregg, A G ^[3]; Besson, D Z; Detrixhe, M ^[4]

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1. Department of Physics and Astronomy, University of Hawaii, Manoa, Hawaii 96822 (United States)
2. Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)
3. Department of Physics and Astronomy, University of California Los Angeles, California 90095 (United States)
4. Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)

The Antarctic Impulsive Transient Antenna (ANITA) completed its second Long Duration Balloon flight in January 2009, with 31 days aloft (28.5 live days) over Antarctica. ANITA searches for impulsive coherent radio Cherenkov emission from 200 to 1200 MHz, arising from the Askaryan charge excess in ultrahigh energy neutrino-induced cascades within Antarctic ice. This flight included significant improvements over the first flight in payload sensitivity, efficiency, and flight trajectory. Analysis of in-flight calibration pulses from surface and subsurface locations verifies the expected sensitivity. In a blind analysis, we find 2 surviving events on a background, mostly anthropogenic, of 0.97{+-}0.42 events. We set the strongest limit to date for 10{sup 18}-10{sup 21} eV cosmic neutrinos, excluding several current cosmogenic neutrino models.

• OSTI ID: 21410087
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 2; Other Information: DOI: 10.1103/PhysRevD.82.022004; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANTARCTICA
CALIBRATION
CHERENKOV COUNTING
CHERENKOV RADIATION
COSMIC NEUTRINOS
EEV RANGE
EFFICIENCY
EMISSION
ICE
MHZ RANGE
PULSES
SENSITIVITY
SURFACES
ANTARCTIC REGIONS
COSMIC RADIATION
COUNTING TECHNIQUES
CRYOSPHERE
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FREQUENCY RANGE
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
NEUTRINOS
POLAR REGIONS
RADIATIONS