Probing new physics in B → K(*)l+l- decays -: art. no. 094018

被引：29

作者：

Chen, CH ^{[1
]}

Geng, CQ

机构：

[1] Acad Sinica, Inst Phys, Taipei 115, Taiwan

[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[3] TRIUMF, Theory Grp, Vancouver, BC V6T 2A3, Canada

来源：

PHYSICAL REVIEW D | 2002年 / 66卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.66.094018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the exclusive decays of B-->K((*))l(+)l(-) by results in perturbative QCD with the heavy quark effective theory and lattice calculations. We obtain the form factors for the B-->K-(*) transitions in the whole allowed region. Our predictions for the branching ratios of B-->Kl(+)l(-), B-->K*e(+)e(-), and B-->K*mu(+)mu(-) are 0.53+/-0.05(-0.07)(+0.10), 1.68+/-0.17(-0.09)(+0.14), and 1.34+/-0.13(-0.06)(+0.11)x10(-6), where the errors are from the quark mixing elements and hadronic effects, respectively. We also find that our definitions of the T-odd observable and the up-down asymmetry of the K meson in B-->K*l(+)l(-)-->Kpil(+)l(-) can be used to probe new physics.

引用

页数：11

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