Chiral effective Lagrangian for heavy-light mesons from QCD: $1/m_{Q}$ correction

Qing-Sen Chen; Hui-Feng Fu; Yong-Liang Ma; Qing Wang

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arXiv · 2012.03733

Chiral effective Lagrangian for heavy-light mesons from QCD: $1/m_{Q}$ correction

Qing-Sen Chen·Hui-Feng Fu·Yong-Liang Ma·Qing Wang

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Abstract

As a successive work to [Phys.Rev.D 102 (2020), 034034], we derive the $1/m_Q$ corrections to chiral effective Lagrangian for heavy-light mesons from QCD under proper approximations. The low energy constants in the effective Lagrangian are expressed in terms of the light quark self-energy and heavy quark mass $m_Q$. Numerical results of the low energy constants with $1/m_Q$ corrections are given. We find that the results of pion decay constant and the masses of heavy-light mesons are improved coherently compared to that obtained in the heavy quark limit.

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Qing-Sen Chen, Hui-Feng Fu, Yong-Liang Ma, Qing Wang. 2020-12-07. Chiral effective Lagrangian for heavy-light mesons from QCD: $1/m_{Q}$ correction. https://arxiv.org/abs/2012.03733

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