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Measurements of the B -> D-* form factors using the decay (B)over-bar(0)-> D(*+)e(-)(v)over-bar(e)
BABAR Collaboration
2006
发表期刊PHYSICAL REVIEW D
卷号74期号:9页码:92004
通讯作者Button-Shafer, J (reprint author), Phys Particules Lab, F-74941 Annecy Le Vieux, France.
文章类型Article
摘要We measure the dependence of (B) over bar (0)-> D(*+)e(-)(B) over bar (e) on the decay angles and momentum transfer. The data sample consists of similar to 86x10(6) B (B) over bar -pairs accumulated on the Upsilon(4S) resonance by the BABAR detector at the asymmetric e(+)e(-) collider PEP-II. We specify the three form factors by two ratios R-1 and R-2, and by a single parameter rho(2) characterizing the polynomial representing h(A1), the function which describes the momentum-transfer dependence of the form factor A(1). We determine R-1, R-2, and rho(2) using an unbinned maximum likelihood fit to the full decay distribution. The results are R-1=1.396 +/- 0.060 +/- 0.035 +/- 0.027, R-2=0.885 +/- 0.040 +/- 0.022 +/- 0.013, and rho(2)=1.145 +/- 0.059 +/- 0.030 +/- 0.035. The stated uncertainties are the statistical from the data, statistical from the size of the Monte Carlo sample and the systematic uncertainty, respectively. In addition, based on this measurement, we give an updated value for the CKM matrix element vertical bar V-cb vertical bar.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.74.092004
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000242409700009
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被引频次:22[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/311005/227946
专题实验物理中心
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BABAR Collaboration. Measurements of the B -> D-* form factors using the decay (B)over-bar(0)-> D(*+)e(-)(v)over-bar(e)[J]. PHYSICAL REVIEW D,2006,74(9):92004.
APA BABAR Collaboration.(2006).Measurements of the B -> D-* form factors using the decay (B)over-bar(0)-> D(*+)e(-)(v)over-bar(e).PHYSICAL REVIEW D,74(9),92004.
MLA BABAR Collaboration."Measurements of the B -> D-* form factors using the decay (B)over-bar(0)-> D(*+)e(-)(v)over-bar(e)".PHYSICAL REVIEW D 74.9(2006):92004.
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