Analysis of experimental data from 𝑝𝑝 collisions for observation of the decays 𝛬$^0_𝑏$ → 𝐷$^+$𝑝𝜋$^−$𝜋$^−$ and 𝛬$^0_𝑏$ → 𝐷$*^+$𝑝𝜋$^−$𝜋$^−$ and measurement of their brancing fractions normalized to the one of the 𝛬𝛬$^0_𝑏$ → 𝛬$^+$ 𝑐 𝜋$^+$𝜋$^−$𝜋$^−$ decay is discussed. Contributions to the invariant 𝐷+𝑝𝜋$^−$𝜋$6−$ mass spectrum near the 𝛬$^0_𝑏$ mass are described. A signal model is suggested for each of them. Shapes of contributions of the decays with extra neutral particles production are calculated. Systematic uncertainties associated with the suggested methods are studied.
14.20.Mr Bottom baryons
14.65.Fy Bottom quarks
$^1$Faculty of Physics M.V.Lomonosov Moscow State University
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