Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $B_{s,d}^0 \to \ell^+\ell^-$ Decays in the Aligned Two-Higgs-Doublet
  Model   The rare decays $B_{s,d}^0 \to \ell^+\ell^-$ are analyzed within the general
framework of the aligned two-Higgs doublet model. We present a complete
one-loop calculation of the relevant short-distance Wilson coefficients, giving
a detailed technical summary of our results and comparing them with previous
calculations performed in particular limits or approximations. We investigate
the impact of various model parameters on the branching ratios and study the
phenomenological constraints imposed by present data.

18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph