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Search for ultrahigh energy neutrinos in highly inclined events at the Pierre Auger Observatory

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 30 Dec 2011Embargo end date: 01 Jan 2012 Croatia, France, Germany, Croatia, Australia, Italy, Italy, Spain, Australia, Italy, Italy, Croatia, Italy, Italy, United Kingdom, Italy, Spain, Italy, Croatia Publisher:American Physical Society (APS)Journal:Physical Review D, volume 84 (issn: 1550-7998, eissn: 1550-2368,

Authors: J. Abraham; P. Abreu; M. Aglietta; C. Aguirre; E. J. Ahn; D. Allard; I. Allekotte; +193 Authors

J. Abraham; P. Abreu; M. Aglietta; C. Aguirre; E. J. Ahn; D. Allard; I. Allekotte; J. Allen; P. Allison; J. Alvarez Muniz; M. Ambrosio; L. Anchordoqui; S. Andringa; A. Anzalone; C. Aramo; E. Arganda; S. Argir; K. Arisaka; F. Arneodo; F. Arqueros; T. Asch; H. Asorey; P. Assis; J. Aublin; M. Ave; G. Avila; A. Bacher; T. Backer; D. Badagnani; K. B. Barber; A. F. Barbosa; H. J. M. Barbosa; N. Barenthien; S. L. C. Barroso; B. Baughman; P. Bauleo; J. J. Beatty; T. Beau; B. R. Becker; K. H. Becker; A. Belletoile; J. A. Bellido; S. BenZvi; C. Berat; X. Bertou; P. L. Biermann; P. Billoir; O. Blanch Bigas; F. Blanco; C. Bleve; H. Blumer; M. Bohacova; E. Bollmann; H. Bolz; C. Bonifazi; R. Bonino; N. Borodai; F. Bracci; J. Brack; P. Brogueira; W. C. Brown; R. Bruijn; P. Buchholz; A. Bueno; R. E. Burton; N. G. Busca; K. S. Caballero Mora; D. Camin; L. Caramete; R. Caruso; W. Carvalho; A. Castellina; J. Castro; O. Catalano; G. Cataldi; L. Cazon; R. Cester; J. Chauvin; A. Chiavassa; J. A. Chinellato; A. Chou; J. Chudoba; J. Chye; P. D. J. Clark; R. W. Clay; E. Colombo; COLUCCIA, MARIA RITA; R. Conceicao; B. Connolly; F. Contreras; J. Coppens; A. Cordero; A. Cordier; U. Cotti; S. Coutu; C. E. Covault; A. Creusot; A. Criss; J. W. Cronin; J. Cuautle; A. Curutiu; S. Dagoret Campagne; R. Dallier; F. Daudo; K. Daumiller; B. R. Dawson; R. M. de Almeida; M. De Domenico; C. De Donato; S. J. de Jong; G. De La Vega; W. J. M. de Mello Junior; J. R. T. de Mello Neto; DE MITRI, Ivan; V. de Souza; K. D. de Vries; G. Decerprit; L. del Peral; O. Deligny; A. Della Selva; C. Delle Fratte; H. Dembinski; C. Di Giulio; J. C. Diaz; P. N. Diep; C. Dobrigkeit; J. C. D’Olivo; P. N. Dong; D. Dornic; A. Dorofeev; J. C. dos Anjos; M. T. Dova; D. D’Urso; I. Dutan; M. A. Du Vernois; R. Engel; M. Erdmann; C. O. Escobar; A. Etchegoyen; P. Facal San Luis; H. Falcke; G. Farrar; A. C. Fauth; N. Fazzini; F. Ferrer; A. Ferrero; B. Fick; A. Filevich; A. Filipcic; I. Fleck; S. Fliescher; R. Fonte; C. E. Fracchiolla; E. D. Fraenkel; W. Fulgione; R. F. Gama rra; S. Gambetta; B. Garcıa; D. Garcıa Gamez; D. Garcia Pinto; X. Garrido; H. Geenen; G. Gelmini; H. Gemmekeai; P. L. Ghia; U. Giaccari; K. Gibbs; M. Giller; J. Gitto; H. Glass; L. M. Goggin; M. S. Gold; G. Golup; F. Gomez Albarracin; M. Gomez Berisso; P. F. Gomez Vitale; P. Goncalves; M. Goncalves do Amaral; D. Gonzalez; J. G. Gonzalez; D. Gora; A. Gorgi; P. Gouffon; E. Grashorn; V. Grassi; S. Grebe; M. Grigat; A. F. Grillo; J. Grygar; Y. Guardincerri; N. Guardone; C. Guerard; F. Guarino; R. Gumbsheimer; G. P. Guedes; J. Gutierrez; J. D. Hague; V. Halenka; P. Hansen; D. Harari;

Search for ultrahigh energy neutrinos in highly inclined events at the Pierre Auger Observatory

- Summary
- Subjects

Abstract

The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos of all flavours above 0.1 EeV. These interact through charged and neutral currents in the atmosphere giving rise to extensive air showers. When interacting deeply in the atmosphere at nearly horizontal incidence, neutrinos can be distinguished from regular hadronic cosmic rays by the broad time structure of their shower signals in the water-Cherenkov detectors. In this paper we present for the first time an analysis based on down-going neutrinos. We describe the search procedure, the possible sources of background, the method to compute the exposure and the associated systematic uncertainties. No candidate neutrinos have been found in data collected from 1 January 2004 to 31 May 2010. Assuming an E^-2 differential energy spectrum the limit on the single flavour neutrino is (E^2 * dN/dE) < 1.74x10^-7 GeV cm^-2 s^-1 sr^-1 at 90% C.L. in the energy range 1x10^17 eV < E < 1x10^20 eV.

16 pages, 14 figures, published 30 December 2011

Countries

Croatia, France, Germany, Croatia, Australia, Italy, Italy, Spain, Australia, Italy, Italy, Croatia, Italy, Italy, United Kingdom, Italy, Spain, Italy, Croatia

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Keywords

Photon fraction, surface detector, [SDU.ASTR.HE] Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Performance, [PHYS.ASTR.HE] Physics/Astrophysics/High Energy Astrophysical Phenomena, UPPER LIMIT, PHOTON FRACTION, [SDU.ASTR.HE] Sciences of the Universe/Astrophysics/High Energy Astrophysical Phenomena, info:eu-repo/classification/ddc/530, Telescope, ultrahigh energy neutrinos ; Pierre Auger Observatory, air showers, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), ORIGIN, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Physics, ddc:530, pion, Pierre Auger Observatory, Nuclear and High Energy Physics; Physics and Astronomy (miscellaneous), cosmic ray detectors, COSMIC-RAYS, and other elementary particle detectors, Cosmic Rays, Auger, observatory, NEUTRINOS, cosmic radiation, Física nuclear, Fermi lat, Astrophysics - High Energy Astrophysical Phenomena, FLUX, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], FERMI-LAT, TELESCOPE, 539.1, energy spectrum, neutrino flavor, FOS: Physical sciences, EXTENSIVE AIR-SHOWERS, SURFACE DETECTOR, 530, muon, Neutrino, Extensive air showers, Cosmic Rays; Pierre Auger Observatory; NEUTRINOS, Cosmic rays, Flux, Origin., Cosmic rays; neutrino, Surface detector, Upper limit, [ PHYS.ASTR.HE ] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], and other elementary particles, Física, 2207 Física Atómica y Nuclear, PERFORMANCE, neutrino flavor; air showers; surface detector; observatory; atmosphere; Auger; cosmic radiation; energy spectrum, atmosphere, [ SDU.ASTR.HE ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [PHYS.ASTR.HE] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]