Search for Majorana neutrinos exploiting millikelvin cryogenics with CUORE.
Search for Majorana neutrinos exploiting millikelvin cryogenics with CUORE.
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DOI：
10.1038/s41586-022-04497-4
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发表时间：
2022-04
期刊：
影响因子：
64.8
通讯作者：
CUORE Collaboration
中科院分区：
文献类型：
--
作者：
CUORE Collaboration
中微子可能是它们自己的反粒子，在已知的基本粒子中是独一无二的，这种可能性是由埃托雷·马约拉纳在1937年提出的费米子对称理论提出的。鉴于这种马约拉纳中微子的深远影响，其中包括通过轻生现象解释宇宙物质-反物质不对称的潜在解释，中微子的马约拉纳性质要求全球范围内进行严格的实验审查；其中一个主要的实验探测是中微子双β (0νββ)衰变。在这里，我们展示了使用最新先进的低温量热仪和CUORE实验来寻找130Te的0νββ衰变的结果。CUORE的工作温度仅为绝对零度以上10毫开尔文，它在三个方面推动了最先进的技术：在如此低温下保持的绝对质量，运行寿命，以及从低温基础设施发出的低水平电离辐射。我们没有发现0νββ衰变的证据，并在90%的可信区间设置了过程半衰期的下界为2.2 × 1025年。我们讨论了CUORE取得的进展在其他领域的潜在应用，如直接暗物质、中微子和核物理搜索以及大规模量子计算，这些领域可以从低放射性、超低温低温环境中持续运行的大型有效载荷中受益。CUORE实验在10毫开尔文的极低辐射环境下稳定运行大型低温TeO2量热计数年后，没有发现中微子双β衰变的证据。
The possibility that neutrinos may be their own antiparticles, unique among the known fundamental particles, arises from the symmetric theory of fermions proposed by Ettore Majorana in 1937. Given the profound consequences of such Majorana neutrinos, among which is a potential explanation for the matter–antimatter asymmetry of the universe via leptogenesis, the Majorana nature of neutrinos commands intense experimental scrutiny globally; one of the primary experimental probes is neutrinoless double beta (0νββ) decay. Here we show results from the search for 0νββ decay of 130Te, using the latest advanced cryogenic calorimeters with the CUORE experiment. CUORE, operating just 10 millikelvin above absolute zero, has pushed the state of the art on three frontiers: the sheer mass held at such ultralow temperatures, operational longevity, and the low levels of ionizing radiation emanating from the cryogenic infrastructure. We find no evidence for 0νββ decay and set a lower bound of the process half-life as 2.2 × 1025 years at a 90 per cent credibility interval. We discuss potential applications of the advances made with CUORE to other fields such as direct dark matter, neutrino and nuclear physics searches and large-scale quantum computing, which can benefit from sustained operation of large payloads in a low-radioactivity, ultralow-temperature cryogenic environment. The CUORE experiment finds no evidence for neutrinoless double beta decay after operating a large cryogenic TeO2 calorimeter stably for several years in an extreme low-radiation environment at a temperature of 10 millikelvin.
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DOI：
10.1016/j.nima.2011.10.065
发表时间：
2012-02-01
影响因子：
1.4
作者：
Andreotti, Erica;Brofferio, Chiara;Tenconi, Margherita
通讯作者：
Tenconi, Margherita
影响因子：
1.3
作者：
Alduino, C.;Alfonso, K.;Zucchelli, S.
通讯作者：
Zucchelli, S.
影响因子：
1.8
作者：
Arnaboldi, C.;Brofferio, C.;Zhu, Y.
通讯作者：
Zhu, Y.
影响因子：
3.1
作者：
Alduino, C.;Alfonso, K.;Zucchelli, S.
通讯作者：
Zucchelli, S.
影响因子：
1.3
作者：
Alfonso, K.;Carniti, P.;Pessina, G.
通讯作者：
Pessina, G.