寻找弱相互作用大质量粒子在 178m2Hf 异构体上的非弹性散射

IF 4.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-04-17 DOI:10.1016/j.physletb.2025.139489

Vladimir Kirischuk , Valeriy Didkovskiy , Sergei Drapey , Volodymyr Tretyak , Sergei Kirischuk

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引用次数: 0

摘要

介绍了利用178m2Hf异构体对暗物质进行第二次实验搜索的结果。对高能γ射线进行了详细分析。高能γ射线不能在该同分异构体的自发衰变过程中发射，但可能是由于与暗物质粒子的非弹性散射而在178Hf中激发核能级的居群中产生的。从这些γ射线强度的极限得到的暗物质诱导跃迁的半衰期极限已经达到T1/2 >；9.3 × 105年。讨论了这类实验工作的进一步进展。

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Search for the inelastic scattering of weakly interacting massive particles on the 178m2Hf isomer

The results of the second experimental search for dark matter using the ^178m2Hf isomer are presented. The high-energy γ-rays that cannot be emitted during the spontaneous decay of this isomer but might arise from the population of excited nuclear levels in ¹⁷⁸Hf due to the inelastic scattering with dark matter particles are analyzed in detail. The limits on the half-life of the dark-matter-induced transitions, obtained from limits on these γ-ray intensities, have reached T_1/₂ > 9.3 × 10⁵ years. Further progress of such experimental efforts is discussed.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.