Better angular accuracy than if taking random track solution Smaller search box for GW detectors Two possible tracks (Mirror solution) Two possible azimuth values (Same zenith) ● ● ● ● ● ● Track 1 Track 2 Detector line Reconstruction used Events reconstructed with 2 lines == Due to simplified detector geometry == The version of the reconstruction offers the possibility to get the azimuth of the mirror solution in the case of events reconstructed with two lines
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Introduction to Irenes talk (reminder) Coincidence window 500s
GWHEN group, Astropart. Phys. 35 (2011) 1-7 Ph. D Thesis of I. Di
Palma (AEI) Ph. D Thesis of B. Bouhou (APC) Updates on this work: -
17 May - 20 May Clermont-Ferrand meeting (2010) - 20 Sep - 24 Sep
Paris meeting (2010) - 22 Nov - 25 Nov Amsterdam meeting (2010) -
07 Feb - 10 Feb CERN meeting (2011) - 06 Jun - 10 Jun Moscow
meeting (2011) Internal note: ANTARES-PHYS wiki page:The selection
criteria follow G. Halladjians strategy Optimization for (steady)
PS E -2 Unblinding granted before summer 2010 (Referee: Aart
Heijboer) The 2007 analysis scheme (triggered search) Data and MC
samples lifetime of the selected data sample: days (37.8 days for
10pe and 65.5 days for 3pe high threshold) Data sample The
coincident period of 5L/S5/VSR1 is between January 27th and
September 30th, 2007 Simulation package: Genhen, weight : Bartol
flux energy range between 10 GeV and 10 7 GeV Simulation package :
Corsika, weight : Battistonis parameterization Atmospheric
neutrinos : Atmospheric muons: Simulation package: Genhen w eighted
with a E -2 energy spectrum Data and MC sample are reconstructed
with the BBfit reconstruction package (v3r6) Cosmic neutrinos : MC
sample Better angular accuracy than if taking random track solution
Smaller search box for GW detectors Two possible tracks (Mirror
solution) Two possible azimuth values (Same zenith) Track 1 Track 2
Detector line Reconstruction used Events reconstructed with 2 lines
== Due to simplified detector geometry == The version of the
reconstruction offers the possibility to get the azimuth of the
mirror solution in the case of events reconstructed with two lines
Cut optimization Cut are applied to maximize the discovery
potential in search for E -2 point sources Only up-going events are
considered. Method : test statistics LR to get optimum n sig
Different values of track and bright point 2 for different zenith
angles are tested 70 possible combinations G. Halladjian, Ph. D,
University Marseilles, Dec 2010 Chosen cuts (up-going events) b 2
>2.2 (reduced contamination of atmospheric muons) t 2
