Ultrahigh Energy Neutrinos at the Pierre Auger Observatory

THE PIERRE AUGER COLLABORATION (P. HANSEN PERTENECE A LA COLABORACION-ORDEN ALFABETICO)

Advances in High Energy Physics

Hindawi Publishing Corporation

Año: 2013 vol. 2013 p. 1 - 18

1687-7365

The observation of ultrahigh energy neutrinos (UHE𝜈s) has become a priority in experimental astroparticle physics. UHE𝜈s canbe detected with a variety of techniques. In particular, neutrinos can interact in the atmosphere (downward-going 𝜈) or in theEarth crust (Earth-skimming 𝜈), producing air showers that can be observed with arrays of detectors at the ground. With thesurface detector array of the Pierre Auger Observatory we can detect these types of cascades. The distinguishing signature forneutrino events is the presence of very inclined showers produced close to the ground (i.e., after having traversed a large amountof atmosphere). In this work we review the procedure and criteria established to search for UHE𝜈s in the data collected with theground array of the Pierre Auger Observatory.This includes Earth-skimming as well as downward-going neutrinos. No neutrinocandidates have been found, which allows us to place competitive limits to the diffuse flux of UHE𝜈s in the EeV range and above.