Ultralight vector dark matter search using data from the KAGRA O3GK run
Date
2024
Authors
Abac, A.G.
Andrić, T.
Buonanno, A.
Dax, M.
Dhani, A.
Dietrich, T.
Estellés, H.
Gair, J.R.
Gamboa, A.
Green, S.R.
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Physical Review D (particles, fields, gravitation, and cosmology), 2024; 110(4):042001-1-042001-21
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LIGO Scientific, Virgo, and KAGRA Collaborations
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Abstract
Among the various candidates for dark matter (DM), ultralight vector DM can be probed by laser
interferometric gravitational wave detectors through the measurement of oscillating length changes in the
arm cavities. In this context, KAGRA has a unique feature due to differing compositions of its mirrors,
enhancing the signal of vector DM in the length change in the auxiliary channels. Here we present the result
of a search for U(1)B−L gauge boson DM using the KAGRA data from auxiliary length channels during the
first joint observation run together with GEO600. By applying our search pipeline, which takes into
account the stochastic nature of ultralight DM, upper bounds on the coupling strength between the U(1) B−L
gauge boson and ordinary matter are obtained for a range of DM masses. While our constraints are less
stringent than those derived from previous experiments, this study demonstrates the applicability of our
method to the lower-mass vector DM search, which is made difficult in this measurement by the short
observation time compared to the auto-correlation timescale of DM.
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© 2024 American Physical Society