From the 1 of 5 linked papers with an AI index.
5 papers
Charm physics
David Friday, Evelina Gersabeck, Alexander Lenz +1
A pedagogical review of charm quark physics, covering its role in testing the Standard Model and probing new physics through observables like lifetimes, D⁰‑meson mixing, CP violati…
Predictions for -baryon lifetimes at NNLO-QCD
Alexander Lenz, Maria Laura Piscopo, Aleksey V. Rusov
Motivated by recent and forthcoming experimental progress, we provide updated predictions for the total decay rates of -baryons, their lifetime ratios and their lifetimes normal…
-meson decay width up to corrections within and beyond the Standard Model
Martin Lang, Alexander Lenz, Ali Mohamed +2
Starting from the most general effective Hamiltonian describing non-leptonic -quark decays , we compute analytic expressions for all matching…
HQET sum rules for matrix elements of dimension-six four-quark operators for meson lifetimes within and beyond the Standard Model
Matthew Black, Martin Lang, Alexander Lenz +1
Theory predictions of heavy-hadron lifetime ratios critically depend on precise determinations of the dimension-six spectator effects arising from the double insertion of the weak…
Total decay rates of mesons at NNLO-QCD
Manuel Egner, Matteo Fael, Alexander Lenz +4
We update the Standard Model (SM) predictions for the lifetimes of the , and mesons within the heavy quark expansion (HQE), including the recently determined NNLO-…