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arXiv · hep-ph/9903293

Colour-straight four-quark operators and liftemes of beautiful hadrons

S. Arunagiri
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Abstract

Using the relation between the harmonic oscillator wave function and the light quark scattering form factor, the expectation values of colour-straight four-quark operators are evaluated and found to be directly proportional to the cubic power of the oscillator strength. It is predicted that the ratio τ(Λ_b)/τ(B) \approx 0.79(0.84) due to the factorizable (nonfactorisable) piece, against the experimental 0.79 \pm 0.06. Notwithstanding the numerical prediction, the present study shows that the four-quark operators play a role as far the lifetimes of b-flavoured hadrons are concerned.

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S. Arunagiri. 1999-12-26. Colour-straight four-quark operators and liftemes of beautiful hadrons. https://doi.org/10.1142/s0217751x00001440

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