Using 2024 inputs and exclusive |V_cb|, the standard model predicts only about 65% of the measured |epsilon_K|, a gap that vanishes when inclusive |V_cb| is used.
Calculation of $\bar B \rightarrow D^\ast \ell \bar \nu$ form factor at zero recoil using the Oktay-Kronfeld action
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We present the first preliminary results for the semileptonic form factor $h_{A_1}(w=1)/\rho_{A_j}$ at zero recoil for the $\bar B \rightarrow D^\ast \ell \bar \nu$ decay using lattice QCD with four flavors of sea quarks. We use the HISQ staggered action for the light valence and sea quarks (the MILC HISQ configurations), and the Oktay-Kronfeld (OK) action for the heavy valence quarks.
citation-role summary
dataset 1
citation-polarity summary
fields
hep-lat 1years
2024 1verdicts
CONDITIONAL 1roles
dataset 1polarities
use dataset 1representative citing papers
citing papers explorer
-
2024 Update on $\varepsilon_K$ with lattice QCD inputs
Using 2024 inputs and exclusive |V_cb|, the standard model predicts only about 65% of the measured |epsilon_K|, a gap that vanishes when inclusive |V_cb| is used.