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Effects of The Initial Hadron in $B\to J/ψ+X$

J. P. Ma
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Abstract

In the framework of HQET inclusive decays of b-flavored hadrons can be handled as decays of the free b-quark approximately. We analyse the correction to this approximation for the inclusive decays into a polarized $J/ψ$,the correction is characterized by two matrix elements defined in HQET. For the $J/ψ$ we use NRQCD to parameterize the formation of the $c\bar c$ pair into $J/ψ$. Numerically the correction is remarkably large, it can be at the level of 30% and it is mainly due to the Fermi-motion of the $b$-quark. With this correction we give a new determination for combinations of two NRQCD matrix elements.

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J. P. Ma. 2000-07-10. Effects of The Initial Hadron in $B\to J/ψ+X$. https://doi.org/10.1016/s0370-2693(00)00845-5

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