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New limits on the resonant absorption of solar axions obtained with a ¹⁶⁹Tm-containing cryogenic detector

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arxiv 2004.08121 v1 pith:Y3EXWJRO submitted 2020-04-17 hep-ex astro-ph.SRhep-phphysics.ins-det

New limits on the resonant absorption of solar axions obtained with a ¹⁶⁹Tm-containing cryogenic detector

classification hep-ex astro-ph.SRhep-phphysics.ins-det
keywords absorptionaxionscryogeniccrystallimitsresonantsolartimes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A search for resonant absorption of solar axions by $^{169}$Tm nuclei was carried out. A newly developed approach involving low-background cryogenic bolometer based on Tm$_3$Al$_5$O$_{12}$ crystal was used that allowed for significant improvement of sensitivity in comparison with previous $^{169}$Tm based experiments. The measurements performed with $8.18$ g crystal during $6.6$ days exposure yielded the following limits on axion couplings: $|g_{A\gamma} (g_{AN}^0 + g_{AN}^3) \leq 1.44 \times 10^{-14}$ GeV$^{-1}$ and $|g_{Ae} (g_{AN}^0 + g_{AN}^3) \leq 2.81 \times 10^{-16}$.

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