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

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arxiv 1802.09409 v1 pith:3M45BB7Q submitted 2018-02-26 hep-ph hep-th

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

classification hep-ph hep-th
keywords expansionheavy-quarkinvariancepartialreparametrizationadvantageapproachdefined
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Predictions for $b$-baryon lifetimes at NNLO-QCD

    hep-ph 2026-07 accept novelty 6.0

    NNLO-QCD corrections to the free b-quark decay and NLO corrections to dimension-five operators reduce uncertainties in HQE predictions for b-baryon lifetimes, yielding excellent agreement with experiment.