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([ref]) is identical to the one introduced in [ref] and in [ref] ; the definition of the integration variable is $ξ≡2 E_g/M$, where $E_g = M (1-z)/(2 √(z))$ is the energy available for the emission of final state radiation in addition to the top pair.","intent_p":0.89,"contests_p":null},{"arxiv_id":"1103.0550","title":"RG-improved single-particle inclusive cross sections and forward-backward asymmetry in $t\\bar t$ production at hadron colliders","url":"/paper/1103.0550","section":"Predictions for the pair invariant mass distribution at the LHC","sentence":"The row labeled “NNLO approx. PIM” in Table [ref] corresponds to the approximation used for the invariant mass distribution in computing the total cross section in [ref] ; i. e., only part of the scale dependent terms in $c̃_ij^(2,0)$ are included, together with a set of terms which are regular in the $z →1$ limit and are obtained by keeping the exact form of the soft emission energy in the SCET formalism, as explained in detail in [ref] .","intent_p":0.89,"contests_p":null},{"arxiv_id":"1105.5824","title":"Precision predictions for the t+t(bar) production cross section at hadron colliders","url":"/paper/1105.5824","section":"Predictions for the pair invariant mass distribution at the LHC","sentence":"The row labeled “NNLO approx. 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