Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semileptonic $B_{(s)}$ decays to excited charmed mesons with
  $e,\mu,\tau$ and searching for new physics with $R(D^{**})$   Semileptonic $B$ meson decays into the four lightest excited charmed meson
states ($D_0^*$, $D_1^*$, $D_1$, and $D_2^*$) and their counterparts with $s$
quarks are investigated, including the full lepton mass dependence. We derive
the standard model predictions for the differential branching fractions, as
well as predictions for the ratios of the semi-tauonic and light lepton
semileptonic branching fractions. These can be systematically improved using
future measurements of the total or differential semileptonic rates to $e$ and
$\mu$, as well as the two-body hadronic branching fractions with a pion,
related by factorization to the semileptonic rate at maximal recoil. To
illustrate the different sensitivities to new physics, we explore the
dependence of the ratio of semi-tauonic and light-lepton branching fractions on
the type-II and type-III two-Higgs-doublet model parameters, $\tan\beta$ and
$m_{H}^\pm$, for all four states.

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The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg