A STUDY OF D-ASTERISK+PI(-)-PRODUCTION IN SEMILEPTONIC B-DECAY
ALEPH Collaboration
刊名PHYSICS LETTERS B
1995
卷号345期号:1页码:#REF!
学科分类Physics
DOI10.1016/0370-2693(94)01585-Z
通讯作者BUSKULIC, D (reprint author), INST NATL PHYS NUCL & PHYS PARTICULES,CNRS,PHYS PARTICULES LAB,F-74019 ANNECY LE VIEUX,FRANCE.
文章类型Article
英文摘要In a sample of 1.5 million hadronic decays of the Z collected by the ALEPH detector, a search is carried out for the decays (B) over bar --> D-1(0)(2420)l(-)<(nu)over bar>X and (B) over bar --> D-2(*0)(2460)l(-)<(nu)over bar>X. The product branching ratio for D-1(0) production is measured to be Br(b --> (B) over bar) x Br((B) over bar --> D(1)(0)l(-)<(nu)over bar>X) x Br(D-1(0) --> D-*+ (B) over bar) x Br((B) over bar --> D(2)(*0)l(-)<(nu)over bar>X) x Br(D-2(*0) --> D(*+)pi(-)) less than or equal to less than or equal to 0.81 X 10(-3) is obtained for D-2(*0) production. A topological search sensitive to the processes above, but also to wide resonances that decay to D(*+)pi(-) and to non-resonant D(*+)pi(-) production is also carried out, yielding Br(b--> (B) over bar B) xBr((B) over bar -->D(*+)pi(-) l(-)<(nu)over bar>X>)= (3.7 +/- 1.0(stat) +/- 0.7(syst)) x 10(-3). Direct evidence of D(*)pi production inconsistent with D-1(0) and D-2(*0) in semileptonic B decay is presented.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:A1995QF49500015
引用统计
被引频次:21[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/311005/226165
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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ALEPH Collaboration. A STUDY OF D-ASTERISK+PI(-)-PRODUCTION IN SEMILEPTONIC B-DECAY[J]. PHYSICS LETTERS B,1995,345(1):#REF!.
APA ALEPH Collaboration.(1995).A STUDY OF D-ASTERISK+PI(-)-PRODUCTION IN SEMILEPTONIC B-DECAY.PHYSICS LETTERS B,345(1),#REF!.
MLA ALEPH Collaboration."A STUDY OF D-ASTERISK+PI(-)-PRODUCTION IN SEMILEPTONIC B-DECAY".PHYSICS LETTERS B 345.1(1995):#REF!.
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