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Results on photon-mediated dark-matter–nucleus interactions from the PICO-60C3F8bubble chamber
Physical Review D ( IF 5 ) Pub Date : 2022-08-10 , DOI: 10.1103/physrevd.106.042004
B. Aliet al.(PICO Collaboration)

Many compelling models predict dark matter coupling to the electromagnetic current through higher multipole interactions, while remaining electrically neutral. Different multipole couplings have been studied, among them anapole moment, electric and magnetic dipole moments, and millicharge. This study sets limits on the couplings for these photon-mediated interactions using nonrelativistic contact operators in an effective field theory framework. Using data from the PICO-60 bubble chamber leading limits for dark matter masses between 2.7 and 24 GeV/c2 and above 265 GeV/c2 (anapole moment), 2.7 and 11.7 GeV/c2 (electric moment), 3 and 9.5 GeV/c2 (magnetic moment), and 2.7 and 12 GeV/c2 (millicharged) are reported for the coupling of these photon-mediated dark matter-nucleus interactions. The detector was filled with 52 kg of C3F8 operating at thermodynamic thresholds of 2.45 keV and 3.29 keV, reaching exposures of 1404kgday and 1167kgday, respectively.

中文翻译:

PICO-60C3F8 气泡室中光子介导的暗物质-核相互作用的结果

许多引人注目的模型预测暗物质通过更高的多极相互作用与电磁电流耦合,同时保持电中性。已经研究了不同的多极耦合,其中包括反极矩、电偶极矩和磁偶极矩以及毫电荷。本研究在有效场论框架中使用非相对论接触算子对这些光子介导的相互作用的耦合进行了限制。使用来自 PICO-60 气泡室的数据,暗物质质量在 2.7 到 2.7 之间24 锗钒/C2以上265 锗钒/C2(anapole 矩), 2.7 和11.7 锗钒/C2(电力矩), 3 和9.5 锗钒/C2(磁矩)和 2.7 和12 锗钒/C2据报道,这些光子介导的暗物质 - 核相互作用的耦合是带电的。探测器装有 52 kgC3F8在 2.45 keV 和 3.29 keV 的热力学阈值下运行,达到1404公斤-1167公斤-, 分别。
更新日期:2022-08-10
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