RARE BARYONIC DECAYS Λb → Λl+l- IN THE TTM MODEL

被引：6
|
作者：
Wen, Yan-Li [1 ]
Yue, Chong-Xing [1 ]
Zhang, Jiao [1 ]
机构：
[1] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2013年 / 28卷 / 17期
基金：
中国国家自然科学基金;
关键词：
Rare baryonic decays Lambda(b) -> Lambda l(+)l(-) (l = e; mu; tau); top triangle moose (TTM) model; the effective Hamiltonian; DOUBLE-LEPTON POLARIZATION; NONUNIVERSAL Z' MODEL;
D O I：
10.1142/S0217751X13500759
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In the framework of the top triangle moose model, we analyze the rare decays Lambda(b) -> Lambda l(+)l(-) (l = e, mu, tau) by using the form factors calculated in full QCD. We calculate the contributions of the new particles predicted by this model to observables, such as the branching ratios, forward-backward asymmetry (A(FB)) and polarizations related these decay processes. We find that, in wide range of the parameter space, the values of the branching ratios are enhanced by one order of magnitude comparing to the standard model predictions. This model can also produce significant corrections to A(FB), normal polarization P-N and transversal polarization P-T.
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页数：10
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