# Study of $\chi _{{\mathrm {b}}}$ meson production in $\mathrm {p}$ $\mathrm {p}$ collisions at $\sqrt{s}=7$ and $8{\mathrm {\,TeV}}$ and observation of the decay $\chi _{{\mathrm {b}}}\mathrm {(3P)} \rightarrow \Upsilon \mathrm {(3S)} {\gamma }$

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