PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Dark Matter. DM-indirect searches
Estimating the Sensitivity of IceCube to Signatures of Axionlike Particle Production in a Galactic Supernova
S. BenZvi,* R. Cross, T. Nguyen on behalf of the IceCube Collaboration
*corresponding author
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Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
We describe the sensitivity of the IceCube Neutrino Observatory to the creation of axions in a Type II core-collapse supernova (SN II) in the Galaxy. Axions are a light dark matter candidate, and their existence is well-motivated as a solution to the strong CP problem. In a supernova, axions behave much like neutrinos, efficiently removing energy from the explosion and cooling the system. As a result, neutrino production in an SN~II is suppressed in the presence of axions, mainly affecting the seconds-long tail of the SN~II neutrino light curve. The IceCube Observatory is sensitive to large numbers of MeV neutrinos from an SN~II, which produce a collective rise in the hit rates of all photomultipliers in the detector. We present a shape analysis that can be used with IceCube data to discriminate the axion production scenario from standard SN II models
DOI: https://doi.org/10.22323/1.301.0892
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