Measurements of branching fractions of leptonic and hadronic D-s(+) meson decays and extraction of the D-s(+) meson decay constant
Belle Collaboration
刊名JOURNAL OF HIGH ENERGY PHYSICS
2013
期号9
关键词PACKAGE
学科分类Physics
DOI10.1007/JHEP09(2013)139
通讯作者Zupanc, A (reprint author), Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany.
英文摘要We present measurements of absolute branching fractions of hadronic and leptonic D-s(+) decays to K-K+pi(+), ($) over bar (0) ($) over bar (+), eta pi(+), mu(+)nu(mu) and tau(+)nu(tau) and report a search for the leptonic D-s(+) -> e(+) nu(e) decays. The results are obtained from a data sample of 913 fb(-1) collected at or near the gamma (4S) and gamma (5S) resonances with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The branching fractions of hadronic decays are measured to be B(D-s(+) -> K-K+pi(+)) = (5.06 +/- 0: 15 +/- 0.21)%, B(D-s(+) -> ($) over bar (0) ($) over bar (+)) = (2.95 +/- 0.11 +/- 0.09)%, B(D-s(+) -> eta pi(+)) = (1.82 +/- 0.14 +/- 0.07)%, where the fi rst and second uncertainties are statistical and systematic, respectively. The branching fractions of leptonic decays are measured to be B(D-s(+) -> mu(+)nu(mu)) = (0.531 +/- 0.028 +/- 0.020)%, B(D-s(+) -> tau(+)nu(tau)) = (5.70 +/- 0.21(-0.30)(+0.31))%, which are combined to determine the D-s(+) meson decay constant fD(s) = (255.5 +/- 4.2 +/- 5.1) MeV. We find no significant signal for D-s(+) -> e(+)nu(e) decays and set an upper limit of B(D-s(+) -> e(+)nu(e)) < 1.0(0.83) +/- 10(-4) at 95% (90%) con fi dence level.
类目[WOS]Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000325024000003
引用统计
被引频次:20[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/311005/213605
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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Belle Collaboration. Measurements of branching fractions of leptonic and hadronic D-s(+) meson decays and extraction of the D-s(+) meson decay constant[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(9).
APA Belle Collaboration.(2013).Measurements of branching fractions of leptonic and hadronic D-s(+) meson decays and extraction of the D-s(+) meson decay constant.JOURNAL OF HIGH ENERGY PHYSICS(9).
MLA Belle Collaboration."Measurements of branching fractions of leptonic and hadronic D-s(+) meson decays and extraction of the D-s(+) meson decay constant".JOURNAL OF HIGH ENERGY PHYSICS .9(2013).
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