Abstract
An experimental value of the spin–spin coupling constant in deuterated molecular hydrogen HD has been obtained, J pd = (43.112 ± 0.005) Hz (300 K), while investigating two gaseous samples at pressures of 95 and 155 atm. The experimental result does not coincide with Jpd = (43.31 ± 0.05) Hz that was calculated theoretically by Helkager et al. The observed discrepancy ΔJ pd ≈ (0.20 ± 0.05 Hz) may point to a manifestation of the involvement of light pseudo-scalar (axion-like) bosons with a mass m a ≈ 1 keV/c2 in the spin–spin coupling of the HD proton and deuteron.
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Original Russian Text © Yu.I. Neronov, 2018, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2018, Vol. 153, No. 3, pp. 388–393.
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Neronov, Y.I. Determination of the Spin–Spin Coupling Constant in Hydrogen Deuteride HD and Estimates of the Manifestation of Axion-Like Particles. J. Exp. Theor. Phys. 126, 321–325 (2018). https://doi.org/10.1134/S1063776118020024
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DOI: https://doi.org/10.1134/S1063776118020024