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
期刊:
影响因子:
5
通讯作者:
E. Shaw;M. Ross;C. Hagedorn;E. Adelberger;J. Gundlach
E. Shaw;M. Ross;C. Hagedorn;E. Adelberger;J. Gundlach
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
E. Shaw;M. Ross;C. Hagedorn;E. Adelberger;J. Gundlach

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我们使用铍铝组成偶极的静态扭转天平来寻找与重子减去轻子数耦合的超低质量玻色子暗物质。对于质量在10fi18和10−16 eV/c2之间的玻色子,我们对耦合常数g B−L设定了95%的条件限制,当m Dm=8×10−18 eV/c2约束g B−L(Hc)−1/2<1×10−25时性能最佳。这为寻找超低质量玻色子作为力中介粒子的等价原理实验提供了一个额外的限制。
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.