Work

QCD corrections for subleading powers in 1 / m b for the nonleptonic b → c c ¯ s transition

Year: 2025

Type: article

Abstract: We compute next-to-leading order QCD corrections to the 1 / m b 2 terms of the heavy quark expansion, for the contribution to inclusive nonleptonic bottom hadron decays, induced by the charged-current operators mediating the b → c c ¯ s transition. Their contributions to the lifetimes are Cabibbo favored and have large Wilson coefficients, but they have not been computed before, since the presence of two heavy quarks in the final state makes this calculation technically demanding. This work adds the last missing piece of the full NLO terms at 1 / m b 2 in the heavy quark expansion of B -hadron lifetimes. We obtain analytical results with full dependence on the final-state charm quark mass.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.094035

Authors: Thomas Mannel, Daniel Moreno, Alexei A. Pivovarov

Institutions: University of Siegen, Paul Scherrer Institute

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Commission, Deutsche Forschungsgemeinschaft, Horizon 2020 Framework Programme, H2020 Marie Skłodowska-Curie Actions

Awards: International, Interdisciplinary & Intersectoral Postdoctoral Fellowships at the Paul Scherrer Institut, TRR 257: Phänomenologische Elementarteilchenphysik nach der HiggsEntdeckung, G2645866196, International, Interdisciplinary and Intersectoral Postdoctoral Fellowships at the Paul Scherrer Institut, G434337789