Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurements of isospin asymmetry and difference of direct $CP$
  asymmetries in inclusive $B \to X_s \gamma$ decays   We report measurements of isospin asymmetry $\Delta_{0-}$ and difference of
direct $CP$ asymmetries $\Delta A_{CP}$ between charged and neutral $B \to X_s
\gamma$ decays. This analysis is based on the data sample containing $772
\times 10^6 B\bar{B}$ pairs that was collected with the Belle detector at the
KEKB energy-asymmetric $e^+ e^-$ collider. Using a sum-of-exclusive technique
with invariant $X_s$ mass up to 2.8~GeV/$c^2$, we obtain $\Delta_{0-} =
\bigl[-0.48 \pm 1.49 {\rm (stat.)} \pm 0.97 {\rm (syst.)} \pm 1.15
{(f_{+-}/f_{00})}\bigr]$\% and $\Delta A_{CP} = \bigl[+3.69 \pm 2.65 {\rm
(stat.)} \pm 0.76{\rm (syst.)}\bigr]$\%, where the last uncertainty for
$\Delta_{0-}$ is due to the uncertainty on the production ratio of $B^+B^-$ to
$B^0\bar{B}^0$ in $\Upsilon(4S)$ decays. The measured value of $\Delta_{0-}$ is
consistent with zero, allowing us to constrain the resolved photon contribution
in the $B \to X_s \gamma$, and improve the branching fraction prediction. The
result for $\Delta A_{CP}$ is consistent with the prediction of the SM. We also
measure the direct $CP$ asymmetries for charged and neutral $B \to X_s \gamma$
decays. All the measurements are the most precise to date.

34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph