Isotropic vs. Anisotropic components of BAO data: a tool for model
  selection
  We conduct a selective analysis of the isotropic ($D_V$) and anisotropic
($AP$) components of the most recent Baryon Acoustic Oscillations (BAO) data.
We find that these components provide significantly different constraints and
could provide strong diagnostics for model selection, also in view of more
precise data to arrive. For instance, in the $\Lambda$CDM model, we find a mild
tension of $\sim 2 \sigma$ for the $\Omega_m$ estimates obtained using $D_V$
and $AP$ separately. Considering both $\Omega_k$ and $w$ as free parameters, we
find that the concordance model is in tension with the best-fit values provided
by the BAO data alone at 2.2$\sigma$. We complemented the BAO data with the
Supernova Ia (SNIa) and Observational \textit{Hubble} datasets to perform a
joint analysis on the $\Lambda$CDM model and its standard extensions. By
assuming $\Lambda$CDM scenario, we find that these data provide $H_0 = 69.4 \pm
1.7$ \text{km/s Mpc$^{-1} $} as the best-fit value for the present expansion
rate. In the $k\Lambda$CDM scenario we find that the evidence for acceleration
using the BAO data alone is more than $\sim 5.8\sigma$, which increases to $8.4
\sigma$ in our joint analysis.
