Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exclusive radiative B-meson decays within the aligned two-Higgs-doublet
  model   In the aligned two-Higgs-doublet model, the alignment of Yukawa matrices in
flavour space guarantees the absence of tree-level flavour-changing neutral
currents, while allowing at the same time for new sources of CP violation,
implying potentially large effects in many low-energy processes. In this work
we study the constraints from exclusive radiative $B\to V\gamma$ decays, where
$V$ denotes a light vector meson. The current experimental data on the
CP-averaged branching ratios and the direct CP and isospin asymmetries are
analyzed. It is found that, while the branching ratios and direct CP
asymmetries do not constrain the parameter space much further compared to the
inclusive $B\to X_{s,d} \gamma$ decays, complementary constraints can be
obtained from the isospin asymmetries $\Delta(K^*\gamma)$ and
$\Delta(\rho\gamma)$. In addition, correlations between the various observables
in exclusive $B\to V\gamma$ and inclusive $B\to X_{s,d} \gamma$ decays are
investigated in detail, and predictions are made for several so far unmeasured
observables.

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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
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The categories of this paper are: nlin
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
12
The categories of this paper are: nucl-th