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Exact Heavy to Light Meson Form Factors in the Combined Heavy Quark, Large $N_c$ and Chiral Limits

Benjamin Grinstein·Paul F. Mende
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Abstract

We demonstrate that the form factors of local operators between a heavy meson state (like the~$B$) and a light pseudoscalar state (like the pion) are given exactly by a single pole form in the combined heavy quark, large $N_c$ (number of colors) and chiral limits. We discuss the deviations from this exact result from finite heavy quark masses, non-zero light quark masses and finite $N_c$. We comment on some implications of this result.

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Benjamin Grinstein, Paul F. Mende. 1993-12-30. Exact Heavy to Light Meson Form Factors in the Combined Heavy Quark, Large $N_c$ and Chiral Limits. https://arxiv.org/abs/hep-ph/9312353

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