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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We perform a dynamical lattice computation of the Isgur-Wise functionstau_{1/2} and tau_{3/2} at zero recoil. We consider three different light quarkmasses corresponding to 300 MeV < m_{PS} < 450 MeV, which allow us toextrapolate our results to the physical u/d quark mass. We find tau_{1/2}(1) =0.296(26) and tau_{3/2}(1) = 0.526(23). Uraltsev's sum rule is saturated up to80% by the ground state. We discuss implications regarding semileptonic decaysB --> X_c l nu and the associated "1/2 versus 3/2" puzzle.

Lattice calculation of the Isgur-Wise functions tau_{1/2} and tau_{3/2} with dynamical quarks