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Observation of a new baryon state in the $ {\Lambda}_{\mathrm{b}}^0{\pi}^{+}{\pi}^{-} $ mass spectrum

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Academic year: 2021

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Table 1: Quark-model predictions for the masses of the lightest Λ b and Σ (∗) b states (in MeV).
Figure 1: Mass distributions for selected (left) Λ 0 b → Λ + c π − and (right) Λ 0 b → J / ψ pK − candidates after BDT selection
Figure 2: Mass spectra of selected (top) Λ 0 b π + π − , (middle) Λ 0 b π + π + and (bottom) Λ 0 b π − π − com- com-binations for the Λ 0 b → Λ +c π − sample
Figure 3: Mass spectra of selected (top) Λ 0 b π + π − , (middle) Λ 0 b π + π + and (bottom) Λ 0 b π − π − combi- combi-nations for the Λ 0 b → J /ψ pK − sample
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