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

The transition form factors of $B_{(s)} \to S$, with $S$ denoting a scalarmeson, are investigated in the light-cone sum rules approach. The numericalvalues are approximately twice as large as that estimated in the light-frontquark model and QCD sum rules approach. Using these form factors, we presentthe analysis of the decay rates for $B \to a_0(1450) l \bar{\nu}_l $, $B \toK^{\ast}_0(1430) l \bar{l}$, $B_s \to K^{\ast}_0(1430) l \bar{\nu}_l$ and $B_s\to f_0(1500) l \bar{l}$ with $l=e, \mu, \tau$. The results indicate thatmagnitudes of $BR(\bar{B}_0 \to a_0(1450) l \bar{\nu}_l)$ and $BR(B_s \toK^{\ast}_0(1430) l \bar{\nu}_l)$ can arrive at the order of $10^{-4}$, whichcan be measured in the future experiments to clarify the inner structure ofscalar mesons. It is also observed that $BR(B \to K^{\ast}_0(1430) \tau^+\tau^-)$ and $BR(B_s \to f_0(1500) \tau^+ \tau^-)$ are an order of magnitudesmaller than the corresponding channels of $e^+ e^-$ and $\mu^+ \mu^-$ finalstates due to the heavily suppressed phase space . Moreover, the longitudinallepton polarization asymmetry for $B \to K^{\ast}_0(1430) l \bar{l}$ and $B_s\to f_0(1500) l \bar{l}$ are also investigated, whose values are close to -1for the $e^+ e^-$ and $\mu^+ \mu^-$ pair except the region close to the endpoints.

Scalar mesons in weak semileptonic decays of $B_{(s)}$