Kaonic Atom X-ray Research on Light Nuclei

在KEK(日本国立高能物理研究所)，我们测量了由于KN强相互作用引起的高能氢1s态的位移和宽度。我们首次在能谱中观测到了信噪比较高的K系列高能氢X射线，测得其能量漂移和宽度为DELTAE(1s)=-323(]Sy。-.[)63(统计)()Sy.-.[)11(系统)eV(排斥)和Gamma(1s)=407(]Sy。-.[)208(统计)(]Sy.-.[)100(系统)eV。我们扩展了我们在Dafne的轻核上的高能原子的实验程序，以解决同位旋相关性，并得到手征对称支撑的最基本参数之一KN-sigma项。

At KEK (Natinal Institute for High Energy Physics : Japan), we have measured the shift and width of the kaonic hydrogen 1s state due to the KN strong interaction. We have observed, for the first time, distinct K-series kaonic hydrogen x rays with good signal-to-noise ratio in the energy spectrum.The measured energy shift and width were determined to be DELTAE (1s) =-323 (]SY.+-。[) 63 (statistical) (]SY.+-。[) 11 (systematic ) eV (repulsive) and GAMMA (1s) =407 (]SY.+-。[) 208 (statistical) (]SY.+-。[) 100 (systematic) eV,respectively.We extended our experimental program on kaonic atom on light nuclei at DAFNE to resolve the isospin dependence and to obtain KN-sigma term, one of the most fundamental parameter for the chiral symmetry bracing.