main.tex

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\input belle2sym.tex
\def\efftp{\ensuremath{\epsilon_{\text{T}\&\text{P}}\xspace}}
\def\bgrvec{\ensuremath{\mathbf{bgr.}\xspace}}

\def\cvec{\ensuremath{\mathbf{C}\xspace\ }}
\def\yvec{\ensuremath{\mathbf{Y}\xspace\ }}
\def\dvec{\ensuremath{\mathbf{D}\xspace\ }}
\def\bvec{\ensuremath{\mathbf{B}\xspace\ }}
\def\pvec{\ensuremath{\mathbf{P}\xspace\ }}
\def\tvec{\ensuremath{\mathbf{T}\xspace\ }}
\def\esel{\ensuremath{\mathfrak{e}}}
\def\epi{\ensuremath{e}}
\def\fpimu{\ensuremath{f}}
\def\fmupi{\ensuremath{\mathfrak{f}}}
\def\fpio{\ensuremath{\phi}}
\def\XXX{\textcolor{red}{XXX}}



\def\bbb{\ensuremath{B\bar{B}\xspace}}
\def\dbbb{\ensuremath{\delta B\bar{B}\xspace}}

\def\eff{\ensuremath{\epsilon\xspace}}
\def\deff{\ensuremath{\delta \epsilon\xspace}}
\def\effmc{\ensuremath{\epsilon_{\text{MC}}\xspace}}
\def\deffmc{\ensuremath{\delta \epsilon_{\text{MC}}\xspace}}

\def\bbbmc{\ensuremath{B\bar{B}_{\text{MC}}\xspace}}
\def\dbbbmc{\ensuremath{\delta B\bar{B}_{\text{MC}}\xspace}}

\def\bf{\ensuremath{\mathcal{B}\xspace}}

\def\nbb{\ensuremath{N^{B\bar{B}}\xspace}}
\def\dnbb{\ensuremath{\delta N^{B\bar{B}}\xspace}}
\def\nbbdt{\ensuremath{ N^{B\bar{B}}_{\text{meas.}}\xspace}}


\def\ncont{\ensuremath{N^{\text{off res.}}\xspace}}

\def\ncontdt{\ensuremath{N^{\text{off res.}}_{\text{observed}}\xspace}}


\def\ors{\ensuremath{\frac{\mathcal{L}^{\text{on res.}}}{{\mathcal{L}^{\text{off res.}}}}\xspace}}

\begin{document}

%place for definitions and newcommands
\def\belletwo {\it {Belle II}}



\vspace*{-3\baselineskip}
\resizebox{!}{3cm}{\includegraphics{belle2-logo.pdf}}

\vspace*{-5\baselineskip}
\begin{flushright}
BELLE2-CONF-2022-018\\
\today
\end{flushright}


\title {\quad\\[0.5cm] Measurement of the photon-energy spectrum in inclusive \BtoXsgamma decays identified using hadronic decays of the recoil $B$ meson in 2019–2021 Belle II data}



\input{authors-conf2022-plain}

% \collaboration{The Belle II Collaboration}
% \noaffiliation

\begin{abstract}
%\centering
% This note describes measurement of inclusive hadronic-tagged $\B\to X_s\gamma$ decays.

We measure the photon-energy spectrum in radiative bottom-meson ($B$) decays into inclusive final states involving a strange hadron and a photon. We use SuperKEKB electron-positron collisions corresponding to $189~\invfb$ of integrated luminosity collected at the \FourS resonance by the Belle II experiment. The partner \B candidates are fully reconstructed using a large number of hadronic channels. The \BtoXsgamma partial branching fractions are measured as a function of photon energy in the signal $B$ meson rest frame in eight bins above 1.8 GeV. The background-subtracted signal yield for this photon energy region is $343 \pm 122$ events. Integrated branching fractions for three photon energy thresholds of $1.8~\gev$, $2.0~\gev$, and $2.1~\gev$ are also reported, and found to be in agreement with world averages.

% \keywords{Belle II, Moriond 2021}
\end{abstract}

% \pacs{}

\maketitle

{\renewcommand{\thefootnote}{\fnsymbol{footnote}}}
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\clearpage
\input{introduction/introduction}

\input{detector/detector}


\input{event_selection/event_selection}

\input{fitting/fitting}


\input{results/results}

\input{conclusion/conclusion}

\input{acknowledgements/acknowledgements}

\bibliographystyle{JHEP}
\bibliography{references}

\end{document}