An experimental limit on the charge of antihydrogen.
An experimental limit on the charge of antihydrogen.
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DOI：
10.1038/ncomms4955
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发表时间：
2014-06-03
影响因子：
16.6
通讯作者：
Charman AE
中科院分区：
文献类型：
--
作者：
Amole C;Ashkezari MD;Baquero-Ruiz M;Bertsche W;Butler E;Capra A;Cesar CL;Charlton M;Eriksson S;Fajans J;Friesen T;Fujiwara MC;Gill DR;Gutierrez A;Hangst JS;Hardy WN;Hayden ME;Isaac CA;Jonsell S;Kurchaninov L;Little A;Madsen N;McKenna JT;Menary S;Napoli SC;Nolan P;Olchanski K;Olin A;Povilus A;Pusa P;Rasmussen CØ;Robicheaux F;Sarid E;Silveira DM;So C;Tharp TD;Thompson RI;van der Werf DP;Vendeiro Z;Wurtele JS;Zhmoginov AI;Charman AE
反氢的性质预计与氢的性质相同，任何差异都将对物理学的基本理论构成深刻的挑战。这些理论最常讨论的基于反原子的测试是寻找反氢-氢光谱差异（CPT（电荷-宇称-时间）不变性的测试）或引力差异（弱等效原理的测试）。在这里，我们，阿尔法合作，报告一个不同的和有点不寻常的测试CPT和量子异常取消。对电场对从ALPHA阱释放的反氢原子的影响的回顾性分析发现，平均轴向电场为0.51 V mm−1时，平均轴向偏转为4.1±3.4 mm。结合大量的数值模拟，这个测量得到反氢的电荷Qe的界限为Q=（−1.3±1.1±0.4）× 10−8。这里，e是单位电荷，误差来自统计和系统效应。 基础理论并没有预测物质和反物质的性质之间的差异，但对此的实验测试仍处于起步阶段。为此，本研究分析了电场对阿尔法阱中反氢原子的影响，从而对反氢原子的电荷进行了限制。
The properties of antihydrogen are expected to be identical to those of hydrogen, and any differences would constitute a profound challenge to the fundamental theories of physics. The most commonly discussed antiatom-based tests of these theories are searches for antihydrogen-hydrogen spectral differences (tests of CPT (charge-parity-time) invariance) or gravitational differences (tests of the weak equivalence principle). Here we, the ALPHA Collaboration, report a different and somewhat unusual test of CPT and of quantum anomaly cancellation. A retrospective analysis of the influence of electric fields on antihydrogen atoms released from the ALPHA trap finds a mean axial deflection of 4.1±3.4 mm for an average axial electric field of 0.51 V mm−1. Combined with extensive numerical modelling, this measurement leads to a bound on the charge Qe of antihydrogen of Q=(−1.3±1.1±0.4) × 10−8. Here, e is the unit charge, and the errors are from statistics and systematic effects. Fundamental theories do not predict a difference between the properties of matter and antimatter, but experimental tests of this are still in their infancy. To this end, this study analyses the effects of electric fields on antihydrogen atoms in the ALPHA trap to place a bound on the charge of antihydrogen.
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影响因子：
8.6
作者：
Gabrielse, G;Khabbaz, A;Jhe, W
通讯作者：
Jhe, W
影响因子：
8.6
作者：
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DOI：
10.1016/j.nima.2012.04.082
发表时间：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
Andresen, G. B.;Ashkezari, M. D.;Yamazaki, Y.
通讯作者：
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