Search for the weak decay $\eta^\prime\to K^\pm\pi^\mp$ and precise measurement of the branching fraction $\cal B(J/\psi\to\phi\eta^\prime)$ 后印本

作者： Ablikim, Medina and others ¹
作者单位：

1. BESIII Collaboration
提交时间：2016-08-19 08:56:26

摘要: We present the first search for the rare decay of η′ into K±π∓ in J/ψ→ϕη′, using a sample of 1.3×109 J/ψ events collected with the BESIII detector. No significant signal is observed, and the upper limit at the 90\% confidence level for the ratio B(η′→K±π∓)B(η′→γπ+π−) is determined to be 1.3×10−4. In addition, we report the measurement of the branching fraction of J/ψ→ϕη′ to be (5.10±0.03(stat.)±0.32(syst.))×10−4, which agrees with previous results from BESII.

BESIII

分类： 物理学 >> 核物理学
引用： ChinaXiv:201608.00070 (或此版本 ChinaXiv:201608.00070V1)
DOI:10.12074/201608.00070V1
CSTR:32003.36.ChinaXiv.201608.00070.V1
推荐引用方式： Ablikim, Medina and others.(2016).Search for the weak decay $\eta^\prime\to K^\pm\pi^\mp$ and precise measurement of the branching fraction $\cal B(J/\psi\to\phi\eta^\prime)$.中国科学院科技论文预发布平台.[ChinaXiv:201608.00070] (点此复制)

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2016-08-19 08:56:26

ChinaXiv:201608.00070V1

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