Search for low-mass dark matter WIMPs with 12 ton-day exposure of DarkSide-50

Search for low-mass dark matter WIMPs with 12 ton-day exposure of DarkSide-50
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使用 DarkSide-50 的 12 吨/日曝光量搜索低质量暗物质 WIMP

DOI:
10.1103/physrevd.107.063001
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发表时间:
2023
期刊:
影响因子:
5
通讯作者:
Bonivento, W. M.
Bonivento, W. M.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Agnes, P.;Albuquerque, I. F. M.;Alexander, T.;Alton, A. K.;Ave, M.;Back, H. O.;Batignani, G.;Biery, K.;Bocci, V.;Bonivento, W. M.

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我们报告了在下面的质量范围内寻找暗物质弱相互作用大质量粒子(WIMP)的情况,这是通过对实验室的Darkside-50实验用低放射性Ar靶获得的整个数据集的分析得出的。新的分析受益于更准确的探测器响应校准、改进的背景模型以及更好地确定系统不确定性,使我们能够准确地建模背景速率和光谱。核子上质量WIMP的自旋无关截面的90%C.L.排除限制被设置为,大约比以前的Darkside-50限制好10倍。这一分析在[1.2,3.6]WIMP质量范围内扩展了与自旋无关的暗物质相互作用的排除区域,使之低于当前的实验约束。
We report on the search for dark matter weakly interacting massive particles (WIMPs) in the mass range below, from the analysis of the entire dataset acquired with a low-radioactivity argon target by the DarkSide-50 experiment at Laboratori Nazionali del Gran Sasso. The new analysis benefits from more accurate calibration of the detector response, improved background model, and better determination of systematic uncertainties, allowing us to accurately model the background rate and spectra down to. A 90% C.L. exclusion limit for the spin-independent cross section ofmass WIMP on nucleons is set at, about a factor 10 better than the previous DarkSide-50 limit. This analysis extends the exclusion region for spin-independent dark matter interactions below the current experimental constraints in the [1.2, 3.6]WIMP mass range.
DOI: --
发表时间: 2021
期刊: ArXivorg
影响因子: --
作者:
The DarkSide-50 Collaboration) Agnes, P.;Albuquerque, I. F.;Alexander, T.;Alton, A. K.;Ave, M.;Back, H. O.;Batignani, G.;Biery, K.;Bocci, V.;Bonivento, W. M.
通讯作者: Bonivento, W. M.
DOI: 10.1140/epjc/s10052-021-09655-y
发表时间: 2021-10-01
影响因子: 4.4
作者:
Baxter, D.;Bloch, I. M.;Zhou, N.
通讯作者: Zhou, N.