2020/06/30 by Michael Benzke, Tobias Hurth · 7 citations
Chemistry · Engineering · Mathematics · Physics and Astronomy · #Algorithm #Chemistry #Crystallography #Mathematics #Particle Accelerators and Free-Electron Lasers #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.102.114024
published in Physical review. D/Physical review. D. 102(11) (American Physical Society) · minor changes, matches published version
arxiv created 2020/11/27 · openalex publication_date 2020/12/16 · openalex created_date 2020/12/21 · arxiv updated 2021/01/04 · openalex updated_date 2026/08/05
In view of the importance of the nonperturbative resolved contributions for the overall uncertainties of the two inclusive penguin decays B\ensuremath→Xs\ensuremathγ and B\ensuremath→Xs,d\ensuremathℓ+\ensuremathℓ^\ensuremath-, we reanalyze these contributions using new estimates of moments of the subleading shape functions and of other input parameters. Within a systematic approach, we find a significant reduction of the nonperturbative uncertainties in the inclusive decay B\ensuremath→Xs,d\ensuremathℓ+\ensuremathℓ^\ensuremath-, but a much less pronounced reduction in the inclusive decay B\ensuremath→Xs\ensuremathγ compared to a recent analysis on the resolved contributions to the inclusive decay B\ensuremath→Xs\ensuremathγ. We identify the reasons for this discrepancy.