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Flavor ratio at IceCube

Abstract:

Flavor ratio at IceCube Page 1 Flavor ratio at IceCube Andrea Palladino GSSI, L’Aquila, Italy MG14, Rome July 16th Andrea Palladino (GSSI, L’Aquila, Italy) Flavor ratio at IceCube MG14, Rome July 16th 1 / 20 Page 2 What is flavor of the cosmic neutrinos seen by IceCube ? A. Palladino, G. Pagliaroli, FL Villante, F. Vissani Phys. Rev. Lett. 114, 171101 Published 28 April 2015 1 Introduction 2 Theoretical expectations Effective areas Extraterrestrial neutrinos Uncertainties in oscillation parameters 3 Data analysis High Energy Starting Events Passing muons 4 Discussion of result Conclusions Andrea Palladino (GSSI, L’Aquila, Italy) Flavor ratio at IceCube MG14, Rome July 16th 2 / 20 Page 3 Introduction Flavor ratio In 3 years IceCube detected 37 High Energy Starting Events (HESE) with deposited energies above 30 TeV 1 Total µ background ν background Energy Range 37 8.4 ± 4.2 6.6+2.2 -1.6 > 30 TeV 20 0.4 2.4 …