Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing the effects of new physics in $\bar{B}^* \to P \ell
  \bar{\nu}_\ell$ decays   The significant divergence between the SM predictions and experimental
measurements for the ratios, $R_{D^{(*)}}\equiv \mathcal{B}(\bar{B}\to
D^{(*)}\tau^- \bar{\nu}_\tau)/ \mathcal{B}(\bar{B}\to D^{(*)} \ell^{\prime-}
\bar{\nu}_{\ell^{\prime}})$ with $(\ell^{\prime}=e\,,\mu)$, implies possible
hint of new physics in the flavour sector. In this paper, motivated by the
"$R_{D^{(*)}}$ puzzle" and abundant $B^*$ data samples at high-luminosity
heavy-flavor experiments in the future, we try to probe possible effects of new
physics in the semileptonic $\bar{B}^*_{u,d,s} \to P \ell^- \bar{\nu}_\ell$
$(P=D\,,D_s\,,\pi\,,K)$ decays induced by $b \to (u,\,c)\ell^-
\bar{\nu}_{\ell}$ transitions in the model-independent vector and scalar
scenarios. Using the spaces of NP parameters obtained by fitting to the data of
$R_{D}$ and $R_{D^{*}}$, the NP effects on the observables including branching
fraction, ratio $R_P^{\ast}$, lepton spin asymmetry and lepton forward-backward
asymmetry are studied in detail. We find that the vector type couplings have
large effects on the branching fraction and ratio $R_P^{\ast}$. Meanwhile, the
scalar type couplings provide significant contributions to all of the
observables. The future measurements of these observables in the $\bar{B}^* \to
P \ell^- \bar{\nu}_\ell$ decays at the LHCb and Belle-II could provide a way to
crosscheck the various NP solutions to the "$R_{D^{(*)}}$ puzzle".

35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
1
The categories of this paper are: cs
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn