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arXiv · hep-ph/9505232

Light-Front Heavy Quark Effective Theory and Heavy Meson Bound States

Chi-Yee Cheung·Wei-Min Zhang·Guey-lin Lin
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Abstract

The heavy quark effective theory is developed on the light-front. Based on this effective theory, a light-front heavy meson bound state with definite spin and parity is constructed. Within the effective theory, the Isgur-Wise function is derived in terms of the asymptotic light-front bound state amplitudes in the limit $m_Q\rightarrow\infty$; the result is a general expression for arbitrary recoil velocities. With the asymptotic form of the BSW amplitudes, the Isgur-Wise function is given by $ξ(v\cdot v')=1/v\cdot v'$. The slope at the zero-recoil point is $ρ^2=-ξ'(1)=1$, in excellent agreement with the recent CLEO result of $ρ^2=1.01\pm0.15\pm0.09$.

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Chi-Yee Cheung, Wei-Min Zhang, Guey-lin Lin. 1995-05-04. Light-Front Heavy Quark Effective Theory and Heavy Meson Bound States. https://doi.org/10.1103/physrevd.52.2915

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