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

This article analyses the available inputs in $\btopilnu$ and $\btorholnu$decays which include the measured values of differential rate in different$q^2$-bins (lepton invariant mass spectrum), lattice, and the newly availableinputs on the relevant form-factors from the light-cone sum rules (LCSR)approach. We define different fit scenarios, and in each of these scenarios, wepredict a few observables in the standard model (SM). For example, $R(M)=\frac{\mathcal{B}(B \to M\ell_i\nu_{\ell_i})}{\mathcal{B}(B\toM\ell_j\nu_{\ell_j})} $, $R^{\ell_i}_{\ell_j}(M) =\frac{\mathcal{B}(B\to\ell_i\nu_{\ell_i})}{\mathcal{B}(B \to M\ell_j\nu_{\ell_j})}$ with M = $\pi$ or$\rho$ and $\ell_{i,j} = e, \mu$ or $\tau$. We also discuss the new physics(NP) sensitivities of all these observables and obtain bounds on a few NPWilson coefficients in $b\to u \tau\nu_{\tau}$ decays using the available data.We have noted that the data at present allows sizeable NP contributions in thismode. Also, we have predicted a few angular observables relevant to these decaymodes.

A closer look at observables from exclusive semileptonic $B\to(\pi,\rho)\ell\nu_{\ell}$ decays