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Measurement of the branching ratio of B¯→D(*)τ−ν¯τ relative to B¯→D(*)ℓ−ν¯ℓ decays with hadronic tagging at Belle
Belle Collaboration
2015
发表期刊PHYSICAL REVIEW D
卷号92期号:7页码:72014
摘要We report a measurement of the branching fraction ratios R(D)(()*()) of (B) over bar -> D-(*())tau(-)(nu) over bar (tau) relative to (B) over bar -> D-(*())l(-)(nu) over barl (where l = e or mu) using the full Belle data sample of 772 x 10(6)B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured values are R(D) = 0.375 +/- 0.064(stat) +/- 0.026(syst) and R(D*) = 0.293 +/- 0.038 (stat) +/- 0.015 (syst). The analysis uses hadronic reconstruction of the tag-side B meson and purely leptonic t decays. The results are consistent with earlier measurements and do not show a significant deviation from the standard model prediction.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.92.072014
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000363526700003
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被引频次:157[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228994
专题实验物理中心
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Belle Collaboration. Measurement of the branching ratio of B¯→D(*)τ−ν¯τ relative to B¯→D(*)ℓ−ν¯ℓ decays with hadronic tagging at Belle[J]. PHYSICAL REVIEW D,2015,92(7):72014.
APA Belle Collaboration.(2015).Measurement of the branching ratio of B¯→D(*)τ−ν¯τ relative to B¯→D(*)ℓ−ν¯ℓ decays with hadronic tagging at Belle.PHYSICAL REVIEW D,92(7),72014.
MLA Belle Collaboration."Measurement of the branching ratio of B¯→D(*)τ−ν¯τ relative to B¯→D(*)ℓ−ν¯ℓ decays with hadronic tagging at Belle".PHYSICAL REVIEW D 92.7(2015):72014.
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