36 research outputs found

    Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

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    The Pierre Auger Observatory

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    A Study Of Very Inclined Showers In The Pierre Auger Observatory

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    The Engineering Array of the Auger Observatory has been running successfully since 2001 and inclined showers have been recorded from the start. We have analysed the events with zenith angle >> 700^0 recorded between May and November 2002. The different algorithms developed to analyze these showers are also discussed. An preliminary discussion of a reconstructed event having 20 detectors hit is presented. Inclined showers will be detected by the full Auger Observatory and they will allow significant enhancement of the array aperture. High energy events will be seen as spectacular events with 30 or 40 tanks triggered and they will provide alternative information on muon content in air showers

    Survey of the Pierre Auger Observatory

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    Implementation of the first level trigger for the Auger Observatory

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    Performance of the Pierre Auger Fluorescence Detector and Analysis of well recontructed events

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    The Pierre Auger Observatory is designed to elucidate the origin and nature of Ultra High Energy Cosmic Rays using a hybrid detection technique. A first run of data taking with a prototype version of both detectors (the so called Engineering Array) took place in 2001-2002, allowing the Collaboration to evaluate the performance of the two detector systems and to approach an analysis strategy. In this contribution, after a brief description of the system, we will report some results on the behavior of the Fluorescence Detector (FD) Prototype. Performance studies, such as measurements of noise, sensitivity and duty cycle, will be presented. We will illustrate a preliminary analysis of selected air showers. This analysis is performed using exclusively the information from the FD, and includes reconstruction of the shower geometry and of the longitudinal profil

    Cosmic rays at the highest energies and the Pierre Auger Observatory

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    Status of the Auger Engineering Array

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    Surface detector construction and installation at the Auger Observatory

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    The aperure, sensitivity and precision of the Auger Fluorescence Detector

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