Simulation of Askaryan Radio Array Neutrino Events for the Identification of Flavor Ratios
Date Issued
2012
Date
2012
Author(s)
Wang, Shi-Hao
Abstract
Detecting Ultra-high energy (UHE) cosmic neutrino is one of the routes to determine and understand the yet unknown origin of ultra-high energy cosmic rays (UHECRs). In addition, the flavor composition of UHE cosmic neutrinos carries the information about physical properties of their sources as well as the neutrino oscillation and possible exotic physics involved in the propagation. One promising UHE neutrino detection method is observing coherent Cherenkov radiation in radio frequencies generated by the shower induced by neutrino-matter interaction in dense medium, based on the Askaryan effect. Since different leptons have different energy-loss behaviors in the medium, the lepton production of neutrino via charged-current (CC) interaction with matter gives us clues to discriminate among different flavors. In this thesis, we
build a simulation to study the expected direction distribution of detected neutrino events for the recently under-constructed Askaryan Radio Array (ARA) observatory at the South Pole, and investigate its potentiality as a tool for flavor ratio identification.
Subjects
Ultra-high energy cosmic neutrino
cosmogenic (GZK) neutrino
neutrino flavor ratio
Askaryan Radio Array (ARA)
direction distribution of events
Type
thesis
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