English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a study on the nonperturbative calculation of observables forinclusive semileptonic decays of $B_{(s)}$ mesons using lattice QCD. We focuson the comparison of two different methods to analyse the lattice data ofEuclidean correlation functions, specifically Chebyshev and Backus-Gilbertapproaches. This type of computation may eventually provide new insight intothe long-standing tension between the inclusive and exclusive determinations ofthe Cabibbo-Kobayashi-Maskawa (CKM) matrix elements $|V_{cb}|$ and $|V_{ub}|$.We report the results from a pilot lattice computation for the decay $B_s\rightarrow X_c \, l\nu_l$, where the valence quark masses are approximatelytuned to their physical values using the relativistic-heavy quark action forthe $b$ quark and the domain-wall formalism for the other valence quarks. Weaddress the computation of the total decay rate as well as leptonic andhadronic moments, discussing similarities and differences between the twoanalysis techniques.

Chebyshev and Backus-Gilbert reconstruction for inclusive semileptonic $B_{(s)}$-meson decays from Lattice QCD