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Experimental status of $|V_{cd}|$ and $|V_{cs}|$
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abstract
The Cabibbo-Kobayashi-Maskawa (CKM) matrix elements $|V_{cd}|$ and $|V_{cs}|$ are essential to test the unitary of CKM matrix. Before 2014, many results of $|V_{cd}|$ and $|V_{cs}|$ had been reported at BaBar, Belle, and CLEO experiments. The precisions of the most accurate results of $|V_{cd}|$ and $|V_{cs}|$ are 4.4\% and 3.3\%, respectively. After that, benefitting from larger data samples collected at BESIII, the precisions of $|V_{cd}|$ and $|V_{cs}|$ are improved to 1.8\% and 0.9\%, respectively.
Forward citations
Cited by 1 Pith paper
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Prospective analysis of CKM element $|V_{cd}|$ and $D^+$-meson decay constant from leptonic decays $D^+ \to \ell^+ \nu$
A QCD sum rule calculation with dimension-six condensates gives f_D+ = 203.0 ± 1.5 MeV and, with BESIII data, |Vcd| = 0.227 +0.002 -0.001.
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