The Λb lifetime in the light front quark model

被引：0
|
作者：
P. Yu. Kulikov
I. M. Narodetskii
A. I. Onischenko
机构：
[1] Institute of Theoretical and Experimental Physics,
来源：
Journal of Experimental and Theoretical Physics Letters | 2000年 / 71卷
关键词：
13.25.Hw; 13.30.−a; 14.20.Mr;
D O I：
暂无
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学科分类号：
摘要：
The enhancement of the Λb decay width relative to B decay due to the difference in Fermi motion effects in Λband B is calculated in the light front quark model with the simplifying assumption that Λbconsists of a heavy quark and a light scalar diquark. In order to explain the large deviation from unity in the experimental result for τ(Λb)/τ(B), it is necessary that the diquark be light and the ratio of the squares of the Λb and B wave functions at the origin be ≲1.
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页码：362 / 366
页数：4
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