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Observation of a new <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">Ξ</mml:mi></mml:mrow><mml:mrow><mml:mi>b</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup></mml:mrow></mml:math> state
Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of $8.5\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, the observation of a new excited ${\mathrm{\ensuremath{\Xi}}}_{b}^{0}$ resonance decaying to the ${\mathrm{\ensuremath{\Xi}}}_{b}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ final state is presented. The state, referred to as ${\mathrm{\ensuremath{\Xi}}}_{b}(6227{)}^{0}$, has a measured mass and natural width of …