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arXiv · 1802.09409

Reparametrization Invariance and Partial Re-Summations of the Heavy Quark Expansion

Thomas Mannel·K. Keri Vos
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Abstract

We extend existing work on reparametrization invariance (RPI) of the heavy-quark expansion. We discuss the total rates of inclusive processes and obtain results which have a manifest RPI and can be expressed through matrix elements of operators and states defined in full QCD. This approach leads to a partial re-summation of higher-order terms in the heavy-quark expansion and has the advantage that the number of independent parameters is reduced.

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Thomas Mannel, K. Keri Vos. 2018-02-26. Reparametrization Invariance and Partial Re-Summations of the Heavy Quark Expansion. https://doi.org/10.1007/jhep06(2018)115

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