Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 26: Poster V
A 26.7: Poster
Mittwoch, 13. März 2024, 17:00–19:00, Tent C
Data analysis solution for axion dark matter research — •Yuzhe Zhang1, Julian Walter1, and Declan Smith2 for the CASPEr collaboration — 1Helmholtz-Institut, GSI Helmholtzzentrum fuer Schwerionenforschung, 55128 Mainz, Germany — 2Department of Physics, Boston University, Boston, MA 02215, USA
Axions, originally proposed as a solution to the strong-CP problem, have become a dark matter candidate. Theory predicts that the axion field has three kinds of non-gravitational couplings to standard-model particles: the axion-photon, axion-gluon and axion-fermion couplings. These couplings will generate characteristic signals in axion haloscopes. Here, we present the data analysis procedure used in two experiments: Search for Halo Axions with Ferromagnetic Toroids (SHAFT) [1] and Cosmic Axion Spin Precession Experiment (CASPEr) [2]. The analysis not only includes commonly-used signal processing techniques, but also takes advantage of the expected axion lineshape to further increase the signal-to-noise ratio. This work is of potential interest to general axion and other exotic physics research since the data analysis procedure can be tailored to different experiments by specifying the expected signal*s spectral signature.
[1] A. V. Gramolin, D. Aybas, D. Johnson, J. Adam, A. O. Sushkov, Nature Physics 2021, 17, 1 79.
[2] D. Budker, P. W. Graham, M. Ledbetter, S. Rajendran, A. O. Sushkov, Phys. Rev. X 2014, 4.
Keywords: axion; axion-like particles; dark matter; data analysis