Exclusive semileptonic rare decays B→K(*) l+ l- in a top quark two-Higgs-doublet model

被引：0

作者：

Lue Lin-Xia ^{[1
]}

Xiao Zhen-Jun ^{[2
,3
]}

机构：

[1] Nanyang Teachers Coll, Dept Phys, Nanyang 473061, Peoples R China

[2] Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China

[3] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210097, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2008年 / 50卷 / 01期

关键词：

semileptonic decay; two-Higgs-doublet model; polarization; forward-backward asymmetry;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Employing improved calculations of the decay form factors from light-cone sum rules, we evaluate the invariant mass spectrum, forward-backward asymmetry, and lepton polarizations of the exclusive processes B -> K-(*()) l(+) l(-) in the SM and T2HDM. From the recent measurements of their branching ratios, we find that these processes do provide additional bounds on the new parameters in the model considered here. After the inclusion of the new physics contributions, the large enhancement of FBA, which is unobservably small within the SM and of the lepton polarization at large tan beta, may precisely test the SM or reveal new physics in forthcoming accurate experiments.

引用

页码：149 / 160

页数：12

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