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arXiv · hep-ph/9212277

Hyperfine Effects and Large $1/{m}_{Q}^{2}$ Corrections

B. Holdom·M. Sutherland
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Abstract

Effects associated with hyperfine mass splitting between pseudo\-scalar and vector mesons may induce surprisingly large $1/{m}_{Q}^{2}$ corrections in the heavy quark expansion. We demonstrate this in a relativistic quark model by calculating to all orders in $1/{m}_{Q}$, with and without hyperfine effects, and comparing to the first order results. Total corrections of 30\% or more are quite possible in the decay rates for $B\rightarrow Dlν$ and $B\rightarrow D^{\ast}lν$ near zero recoil.

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B. Holdom, M. Sutherland. 1993-07-28. Hyperfine Effects and Large $1/{m}_{Q}^{2}$ Corrections. https://doi.org/10.1016/0370-2693(93)90017-c

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