Heavy Quark Expansion in 1/\hat{m}_Q and |V_{cb}| Extraction

Understand

The dressed heavy quark mass \hat{m}_Q=m_Q+\bar{{\Lambda}} with \bar{{\Lambda}} being the binding energy is introduced to characterize the heavy hadrons containing a single heavy quark.

• A heavy quark expansion in terms of the inverse of the dressed heavy quark mass 1/\hat{m}_Q is presented with a complete decomposition of the full field and integrating out the small components.
• The heavy quark-antiquark coupling effects are included in the finite mass corrections.
• It is shown that the 1/\hat{m}_Q expansion is more favorable in application.