Precision measurement of the 3d→2p x-ray energy in kaonic 4He
Precision measurement of the 3d→2p x-ray energy in kaonic 4He
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DOI：
10.1016/j.physletb.2007.08.032
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发表时间：
2007-09-27
影响因子：
4.4
通讯作者：
Zmeskal, J.
中科院分区：
文献类型：
--
作者：
Okada, S.;Beer, G.;Zmeskal, J.
为了研究低能k-核强相互作用，我们用新型大面积硅漂移x射线探测器测量了K介子He-4原子的Balmer系列x射线。3d ->-> 2 p跃迁的能量被确定为6467 3（stat）2（syst）eV。由此产生的强相互作用能级移动与理论计算一致，从而消除了理论和实验之间长期存在的差异。(C)2007 Elsevier B. V.保留所有权利。
We have measured the Balmer-series x-rays of kaonic He-4 atoms using novel large-area silicon drift x-ray detectors in order to study the low-energy k-nucleus strong interaction. The energy of the 3d ->-> 2p transition was determined to be 6467 3(stat) 2(syst) eV. The resulting strong-interaction energy-level shift is in agreement with theoretical calculations, thus eliminating a long-standing discrepancy between theory and experiment. (C) 2007 Elsevier B.V. All rights reserved.