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arXiv 1209.3059hep-exhep-ph
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BESIII粲物理的最新结果

Recent results on charm physics at BESIII

Hai-Bo Li

摘要:

在BEPCII对撞机上用BESIII探测器收集了大约2.9 fb的$^{-1}$数据集。利用开粲阈附近的实验数据,我们给出了轻子和半轻子粲介子衰变的初步结果,以及BESIII实验的FCNC过程$D^0 \rightarrow γγ$的结果.高精度的Charm数据将使我们能够在百分之几的水平上验证格点量子色动力学的计算。然后,这些可以用于对CKM元素$V_{cd}$和$V_{cs}$进行精确测量,这对于提高CKM酉检验的准确性是有用的。

英文摘要:

About 2.9 fb$^{-1}$ data set had been collected with the BESIII detector at the BEPCII collider. Taking advantages of data near open-charm threshold, we present preliminary results on leptonic and semileptonic charm-meson decays, as well as result on the FCNC process $D^0 \rightarrow γγ$ from BESIII experiment. High precision charm data will enable us to validate Lattice QCD calculations at the few percent level. These can then be used to make precise measurements of CKM elements, $V_{cd}$ and $V_{cs}$, which are useful to improve the accuracy of test of the CKM unitary.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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