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

In this addendum to arXiv:1811.09603 we update our results including therecent measurement of ${\cal R}(D)$ and ${\cal R}(D^*)$ by the Bellecollaboration: ${\cal R}(D)_{\rm Belle} = 0.307\pm0.037\pm0.016$ and ${\calR}(D^*)_{\rm Belle}=0.283\pm0.018\pm0.014$, resulting in the new HFLAV fitresult ${\cal R}(D) = {0.340\pm0.027 \pm 0.013}$, ${\cal R}(D^*) ={0.295\pm0.011 \pm 0.008 }$, exhibiting a $3.1\,\sigma$ tension with theStandard Model. We present the new fit results and update all figures,including the relevant new collider constraints. The updated prediction for${\cal R}(\Lambda_c)$ from our sum rule reads ${\cal R}(\Lambda_c)=\mathcal{R}_{\rm SM}(\Lambda_c) \left( 1.15 \pm 0.04 \right) = 0.38 \pm 0.01\pm 0.01$. We also comment on theoretical predictions for the fragmentationfunction $f_c$ of $b\to B_c$ and their implication on the constraint from$B_{u/c}\to\tau\nu$ data.

Addendum to "Impact of polarization observables and $B_c\to \tau \nu$ on new physics explanations of the $b\to c \tau \nu$ anomaly"