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arxiv 2304.08964 v2 pith:AJNQTCD6 submitted 2023-04-18 hep-ph

The heavy quark expansion for lifetimes: Towards the QCD corrections to power suppressed terms

Thomas Mannel , Daniel Moreno , Alexei A. Pivovarov This is my paper
classification hep-ph
keywords hadronsheavycorrectionsresultexpansionlifetimesorderpower
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider the Heavy Quark Expansion (HQE) for the nonleptonic decay rates of heavy hadrons, and compute the NLO QCD corrections to power terms up to order $1/m_Q^2$. We neglect the masses of the final-state quarks, so the application of our result is mainly for charmed hadrons. Our result can be applied also to bottomed hadrons as they constitute the main effect to this order up to corrections of $\mathcal{O}(m_c/m_b)$ and contributions due to penguin operators. We discuss the impact of our result for the lifetimes of heavy hadrons.

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Cited by 4 Pith papers

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.

  2. New Predictions for the Lifetimes of Doubly Heavy Baryons and the $B_c$ Meson

    hep-ph 2026-05 unverdicted novelty 5.0

    Updated lifetime predictions for doubly heavy baryons and B_c meson with NNLO and NLO corrections in MS-bar, kinetic, and Upsilon mass schemes, including new hierarchies for bc states.

  3. Study of doubly heavy baryon lifetimes

    hep-ph 2026-04 unverdicted novelty 5.0

    Lifetimes of Xi_cc++, Xi_cc+, Omega_cc+ are (2.67 ± 0.94, 0.47 ± 0.08, 1.79 ± 0.62) × 10^{-13} s and for Xi_bb0, Xi_bb-, Omega_bb- are (0.75 ± 0.11, 0.92 ± 0.15, 0.93 ± 0.15) × 10^{-12} s, with W-exchange driving larg...

  4. Revisiting lifetimes of doubly charmed baryons

    hep-ph 2023-05 unverdicted novelty 5.0

    Updated predictions within the heavy quark expansion confirm the lifetime hierarchy τ(Ξ_cc^+) < τ(Ω_cc^+) < τ(Ξ_cc^++) with τ(Ξ_cc^++) = 0.32 ± 0.05 +0.08/-0.07 ps matching LHCb data and provide ratios for the other states.