首页|Measurement of the absolute branching fraction of $D^+\rightarrow\bar K^0 e^+\nu_e$ via $\bar K^0\to\pi^0\pi^0$

Measurement of the absolute branching fraction of $D^+\rightarrow\bar K^0 e^+\nu_e$ via $\bar K^0\to\pi^0\pi^0$

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中文摘要

英文摘要

By analyzing 2.93 fb?1?data collected at the center-of-mass energy?s√=3.773?GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decay?D+→Kˉ0e+νe?to be?B(D+→Kˉ0e+νe)=(8.59±0.14±0.21)%?using?Kˉ0→K0S→π0π0, where the first uncertainty is statistical and the second systematic. Our result is consistent with previous measurements within uncertainties.

By analyzing 2.93 fb1data collected at the center-of-mass energys=3.773GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decayD+K0e+eto beB(D+K0e+e)=(8.590.140.21)%usingK0K0S00, where the first uncertainty is statistical and the second systematic. Our result is consistent with previous measurements within uncertainties.

作者：Ablikim, Medina and others

作者单位：

DOI：10.12074/201608.00131V1

学科分类：物理学

中文关键词：BESIIIabsolutebranching

推荐引用：Ablikim, Medina and others.Measurement of the absolute branching fraction of $D^+\rightarrow\bar K^0 e^+\nu_e$ via $\bar K^0\to\pi^0\pi^0$[EB/OL].(2016-08-25)[2025-08-02].https://chinaxiv.org/abs/201608.00131.点此复制

Measurement of the absolute branching fraction of $D^+\rightarrow\bar K^0 e^+\nu_e$ via $\bar K^0\to\pi^0\pi^0$

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