Inclusive Semileptonic Decays of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>D</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math> Meson: Lattice QCD Confronts Experiments
We present the results of a first-principles theoretical study of the inclusive semileptonic decays of the D_{s} meson. We performed a state-of-the-art lattice QCD calculation by taking into account all sources of systematic errors. A detailed discussion of our lattice calculation, demonstrating that inclusive semileptonic decays can nowadays be studied on the lattice at a phenomenologically relevant level of accuracy, is the subject of a companion paper [A. De Santis et al., Inclusive semileptonic decays of the D_{s} meson: A first-principles lattice QCD calculation, Phys. Rev. D 112, 054503 (2025)PRVDAQ2470-0010]. Here, we focus on the phenomenological implications of our results. Using the current best estimates of the relevant Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, our theoretical predictions for the decay rate and for the first two lepton-energy moments are in very good agreement with the corresponding experimental measurements. We also argue that, while the inclusive D_{s} channel is not yet competitive with the exclusive channels in the |V_{cs}| determination, the situation can be significantly improved in the near future.
Authors
- Carsten Urbach (ORCID: https://orcid.org/0000-0003-1412-7582)
- Bartosz Kostrzewa (ORCID: https://orcid.org/0000-0003-4434-6022)
- V. Lubicz (ORCID: https://orcid.org/0000-0002-4565-9680)
- Silvano Simula (ORCID: https://orcid.org/0000-0002-5533-6746)
- Alessandro De Santis (ORCID: https://orcid.org/0009-0005-2214-3250)
- Marco Panero (ORCID: https://orcid.org/0000-0001-9477-3749)
- G. Gagliardi (ORCID: https://orcid.org/0000-0002-4572-864X)
- Marco Garofalo (ORCID: https://orcid.org/0000-0002-4508-6421)
- Paolo Gambino (ORCID: https://orcid.org/0000-0002-7433-4914)
- Antonio Smecca (ORCID: https://orcid.org/0000-0002-8887-5826)
- Nazario Tantalo (ORCID: https://orcid.org/0000-0001-5571-7971)
- Christiane Franziska Groß
- R. Frezzotti (ORCID: https://orcid.org/0000-0001-5746-0065)
- Francesco Sanfilippo
- Antonio Evangelista
- Francesca Margari
Institutions
- University of Rome Tor Vergata (IT)
- Roma Tre University (IT)
- University of Helsinki (FI)
- University of Bonn (DE)
- GSI Helmholtz Centre for Heavy Ion Research (DE)
- Johannes Gutenberg University Mainz (DE)
- Helsinki Institute of Physics (FI)
- Swansea University (GB)
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Torino (IT)
- Helmholtz Institute Mainz (DE)
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT)
- University of Turin (IT)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-08-18
- DOI
- https://doi.org/10.1103/snc6-cpz6
- Citations
- 3
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 5.61