PRODUCTION AND DECAY OF CHARMED MESONS AT THE Z-RESONANCE
ALEPH COLLABORATION
刊名PHYSICS LETTERS B
1991
卷号266期号:1--2页码:218-230
关键词E+E ANNIHILATION D-STAR
学科分类Physics
DOI10.1016/0370-2693(91)90769-M
通讯作者DECAMP, D (reprint author), CNRS, IN2P3, LAB PHYS PARTICULES LAPP, F-74019 ANNECY LE VIEUX, FRANCE.
英文摘要In a sample of 190 000 hadronic Z decays, three signals of charm production are observed: two from the exclusive decays D0 --> K-pi+ and D*+ --> D0-pi+ --> K-pi+pi+ and one in the transverse-momentum distribution of soft hadrons relative to the nearest jet. The features of these signals are in good agreement with expectations based on the standard model and previous measurements of the branching fractions. The number of D* +/- --> K -/+ pi +/- pi +/- per hadronic decay of the Z is measured to be (5.11 +/- 0.34) x 10(-3), and the branching ratio B(D0 --> K-pi+) is (3.62 +/- 0.34 +/- 0.44)%. Charm hadronization has been studied. The average fraction of the beam energy carried by the D* meson is found to be c = 0.504(-0.017)+0.013 +/- 0.008, and implications of the measurements on the pseudoscalar-to-vector production ratio of charmed mesons are discussed.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:A1991GF21200036
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被引频次:50[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/311005/213872
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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ALEPH COLLABORATION. PRODUCTION AND DECAY OF CHARMED MESONS AT THE Z-RESONANCE[J]. PHYSICS LETTERS B,1991,266(1--2):218-230.
APA ALEPH COLLABORATION.(1991).PRODUCTION AND DECAY OF CHARMED MESONS AT THE Z-RESONANCE.PHYSICS LETTERS B,266(1--2),218-230.
MLA ALEPH COLLABORATION."PRODUCTION AND DECAY OF CHARMED MESONS AT THE Z-RESONANCE".PHYSICS LETTERS B 266.1--2(1991):218-230.
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