Speaker
Mr
Tim Kretz
(Karlsruher Institut für Technologie (KIT - TTP))
Description
In this talk I present new constraints on the axion-nucleon coupling $g_{aNN}$ for massive ALPs using SN1987A. Standard arguments that restrict the energy loss of core-collapse supernovae are used, and novel bounds from modern water Cherenkov detectors are derived for axion masses in the MeV range. Recasting the invisible nucleon decay data of SNO+, a new exclusion limit can be found in the range of $7.7 \times 10^{-7} \, \mathrm{GeV}^{-1}$ to $5.0 \times 10^{-4} \, \mathrm{GeV}^{-1}$ for masses between 170 keV and 400 keV. Thus, water Cherenkov detectors allow to extend the constraints by roughly three additional orders of magnitude.
Author
Mr
Tim Kretz
(Karlsruher Institut für Technologie (KIT - TTP))
Co-author
Dr
Robert Ziegler
(KIT)