Performance of two Askaryan Radio Array stations and first results in the search for ultrahigh energy neutrinos

• DOI: 10.1103/physrevd.93.082003
• Publication Date: 2016-04-25T22:29:47Z
• Authors: P. Allison; R. Bard; J. J. Beatty; D. Z. Besson; C. Bora; C.-C. Chen; C.-H. Chen; P. Chen; A. Christenson; A. Connolly; J. Davies; M. Duvernois; B. Fox; R. Gaior; P. W. Gorham; K. Hanson; J. Haugen; B. Hill; K. D. Hoffman; E. Hong; S.-Y. Hsu; L. Hu; J.-J. Huang; M.-H. A. Huang; A. Ishihara; A. Karle; J. L. Kelley; D. Kennedy; I. Kravchenko; T. Kuwabara; H. Landsman; A. Laundrie; C.-J. Li; T. C. Liu; M.-Y. Lu; L. Macchiarulo; K. Mase; T. Meures; R. Meyhandan; C. Miki; R. Morse; J. Nam; R. J. Nichol; G. Nir; A. Novikov; A. O’Murchadha; C. Pfendner; K. Ratzlaff; M. Relich; M. Richman; L. Ritter; B. Rotter; P. Sandstrom; P. Schellin; A. Shultz; D. Seckel; Y.-S. Shiao; J. Stockham; M. Stockham; J. Touart; G. S. Varner; M.-Z. Wang; S.-H. Wang; Y. Yang; S. Yoshida; R. Young
• Keywords: FLUX; High Energy Astrophysical Phenomena (astro-ph.HE); SPECTRUM; Science & Technology; Physics; Particles & Fields; ICE; FOS: Physical sciences; Astronomy & Astrophysics; COSMIC-RAYS; 530; 7. Clean energy; 01 natural sciences; PULSES; SOUTH-POLE; 13. Climate action; Physical Sciences; 0103 physical sciences; Astrophysics - High Energy Astrophysical Phenomena; Astrophysics - Instrumentation and Methods for Astrophysics; DETECTOR; Instrumentation and Methods for Astrophysics (astro-ph.IM)

Ultrahigh energy neutrinos are interesting messenger particles since, if detected, they can transmit exclusive information about ultrahigh processes in the Universe. These particles, with energies above ${10}^{16}\text{ }\text{ }\mathrm{eV}$, interact very rarely. Therefore, detectors that instrument several gigatons of matter needed to discover them. The ARA detector is currently being constructed at South Pole. It designed use Askaryan effect, emission radio waves from neutrino-induced cascades Pole ice, detect neutrino interactions high energies. With antennas distributed among 37 widely separated stations such be observed a volume hundred cubic kilometers. Currently three deep deployed which two have been taking data since beginning 2013. In this article, ``as built'' and calibrations described. Data reduction methods used distinguish rare signals overwhelming backgrounds thermal anthropogenic origin presented. Using only over short exposure time 10 months, flux limit $1.5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}\text{ }\mathrm{GeV}/{\mathrm{cm}}^{2}/\mathrm{s}/\mathrm{sr}$ calculated for particle ${10}^{18}\text{ offers promise full detector.