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Mixed strong-electroweak corrections to the Drell-Yan process

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arxiv 2106.11953 v1 pith:7VWLGKMN submitted 2021-06-22 hep-ph

Mixed strong-electroweak corrections to the Drell-Yan process

Roberto Bonciani , Luca Buonocore , Massimiliano Grazzini , Stefan Kallweit , Narayan Rana , Francesco Tramontano , Alessandro Vicini This is my paper
classification hep-ph
keywords correctionsmixedresultcomputeddileptondrellelectroweakfirst
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report on the first complete computation of the mixed QCD$-$electroweak (EW) corrections to the neutral-current Drell$-$Yan process. Superseding previously applied approximations, our calculation provides the first result at this order that is valid in the entire range of dilepton invariant masses. The two-loop virtual contribution is computed by using semi-analytical techniques, overcoming the technical problems in the evaluation of the relevant master integrals. The cancellation of soft and collinear singularities is achieved by a formulation of the $q_T$ subtraction formalism valid in presence of charged massive particles in the final state. We present numerical results for the fiducial cross section and selected kinematical distributions. At large values of the lepton $p_T$ the mixed QCD$-$EW corrections are negative and increase in size, to about $-15\%$ with respect to the next-to-leading-order QCD result at $p_T=500\,$GeV. Up to dilepton invariant masses of 1 TeV the computed corrections amount to about $-1.5\%$ with respect to the next-to-leading-order QCD result.

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Cited by 5 Pith papers

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    hep-ph 2026-05 unverdicted novelty 6.0

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