Torsion-balance search for ultralow-mass bosonic dark matter
Torsion-balance search for ultralow-mass bosonic dark matter
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DOI:
10.1103/physrevd.105.042007
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发表时间:
2021-09
影响因子:
5
通讯作者:
E. Shaw;M. Ross;C. Hagedorn;E. Adelberger;J. Gundlach
中科院分区:
文献类型:
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作者:
E. Shaw;M. Ross;C. Hagedorn;E. Adelberger;J. Gundlach
We used a stationary torsion balance with a beryllium-aluminum composition dipole to search for ultra low-mass bosonic dark matter coupled to baryon minus lepton number. We set 95% confidence limits on the coupling constant g B − L for bosons with masses between 10 − 18 and 10 − 16 eV/ c 2 with the best performance at m DM = 8 × 10 − 18 eV/ c 2 constraining g B − L (¯ hc ) − 1 / 2 < 1 × 10 − 25 . This provides a complimentary limit to equivalence-principle experiments that search for ultra low-mass bosons as force-mediating particles.