The Lambdab lifetime in the light front quark model
P. Yu. Kulikov, I. M. Narodetskii, A. I. Onischenko
Abstract
The enhancement of the Lambdab decay width relative to B decay one due to the difference of Fermi motion effects in Lambdab and B is calculated in the light--front quark model with the simplifying assumption that Lambdab consists of the heavy quark and light scalar diquark. In order to explain the large deviation from unity in the experimental result for tau(Lambdab)/tau(B), it is necessary that diquark be light and the ratio of the squares of the Lambdab and B wave functions at the origin be 1.
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