Experimental search for the violation of Pauli exclusion principle: VIP-2 Collaboration.

Experimental search for the violation of Pauli exclusion principle: VIP-2 Collaboration.
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DOI:
10.1140/epjc/s10052-018-5802-4
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发表时间:
2018
期刊:
The European physical journal. C, Particles and fields
影响因子:
--
通讯作者:
Curceanu C
Curceanu C
中科院分区:
其他
文献类型:
--
作者:
Shi H;Milotti E;Bartalucci S;Bazzi M;Bertolucci S;Bragadireanu AM;Cargnelli M;Clozza A;De Paolis L;Di Matteo S;Egger JP;Elnaggar H;Guaraldo C;Iliescu M;Laubenstein M;Marton J;Miliucci M;Pichler A;Pietreanu D;Piscicchia K;Scordo A;Sirghi DL;Sirghi F;Sperandio L;Vazquez Doce O;Widmann E;Zmeskal J;Curceanu C

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泡利不相容原理-2实验(英语:VIOLATION of Pauli exclusion principle-2 experiment),或VIP-2实验,在Gran Sasso国家实验室(英语:Granatori Nazionali del Gran Sasso)进行,目的是寻找被泡利不相容原理所禁止的铜原子跃迁的X射线。候选的直接破坏事件来自一个2 p电子到基态的跃迁,基态已经被两个电子占据。从2016年VIP-2实验的第一次数据采集活动中,我们确定了存在这种违规的概率的最佳上限。实验系统学的控制也取得了显着的改善,虽然没有明确反映在改进的上限。通过在分析中引入信号和背景数据的同时光谱拟合,我们成功地考虑了以前在这种类型的测量中无法评估的系统误差。
The VIolation of Pauli exclusion principle -2 experiment, or VIP-2 experiment, at the Laboratori Nazionali del Gran Sasso searches for X-rays from copper atomic transitions that are prohibited by the Pauli exclusion principle. Candidate direct violation events come from the transition of a 2p electron to the ground state that is already occupied by two electrons. From the first data taking campaign in 2016 of VIP-2 experiment, we determined a best upper limit of for the probability that such a violation exists. Significant improvement in the control of the experimental systematics was also achieved, although not explicitly reflected in the improved upper limit. By introducing a simultaneous spectral fit of the signal and background data in the analysis, we succeeded in taking into account systematic errors that could not be evaluated previously in this type of measurements.
影响因子: 1.4
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