INVESTIGADORES
PIEGAIA Ricardo Nestor
congresos y reuniones científicas
Título:
Ultra-high energy neutrinos at the Pierre Auger Observatory
Autor/es:
PIEGAIA; PIERRE AUGER COLLABORATION
Lugar:
Rio de Janeiro
Reunión:
Congreso; 33rd International Cosmic ray Conference,; 2013
Resumen:
Neutrinos in the sub-EeV energy range and above can be detected with the Surface Detector array (SD) of the Pierre Auger Observatory. They can be identified through the broad time-structure of the signals expected to be induced in the SD stations. The identification can be efficiently done for neutrinos of all flavours interacting in the atmosphere at large zenith angles, typically above 60 degreees(downward-going), as well as for Earth-skimming neutrino interactions in the case of tau neutrinos (upward-going). The wide angular range calls naturally for three sets of identification criteria designed to search for downward-going neutrinos in the zenith angle bins 60-75 and 75-90 as well as for upward-going neutrinos. In this contribution the three searches are combined to give a single limit, providing, in the absence of candidates in data from 1 January 04 until 31 December 12, an updated and stringent limit to the diffuse flux of ultra-high energy neutrinos.