We present for the first time the exact next-to-leading-order QCD corrections to the light-quark part of the mixed QCD-EW contributions to Higgs production via gluon fusion at the Large Hadron Collider, for a center-of-mass energy of 13 TeV, with exact EW-boson mass dependence. The relevant two-loop real-emission matrix element is computed using a dynamic one-dimensional series expansion strategy whose stability and speed allows for a numerical phase-space integration using local IR subtraction counterterms. For the choice of renormalization (μR) and factorization (μF) scales, μR=μF=MH, we find σgg→H+X(αs2α2+αs3α2)=1.467(2)-14.6%+18.7%(μR var)±2% (PDF) pb, which we use to provide the best result, including an estimate of suppressed contributions: σpp→H+X(EW,best)=2.11±0.28 (theory) pb.

Next-to-leading order corrections to light-quark mixed QCD-EW contributions to Higgs boson production / Becchetti, M.; Bonciani, R.; Del Duca, V.; Hirschi, V.; Moriello, F.; Schweitzer, A.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 103:5(2021). [10.1103/PhysRevD.103.054037]

Next-to-leading order corrections to light-quark mixed QCD-EW contributions to Higgs boson production

Bonciani R.;Del Duca V.;Moriello F.;
2021

Abstract

We present for the first time the exact next-to-leading-order QCD corrections to the light-quark part of the mixed QCD-EW contributions to Higgs production via gluon fusion at the Large Hadron Collider, for a center-of-mass energy of 13 TeV, with exact EW-boson mass dependence. The relevant two-loop real-emission matrix element is computed using a dynamic one-dimensional series expansion strategy whose stability and speed allows for a numerical phase-space integration using local IR subtraction counterterms. For the choice of renormalization (μR) and factorization (μF) scales, μR=μF=MH, we find σgg→H+X(αs2α2+αs3α2)=1.467(2)-14.6%+18.7%(μR var)±2% (PDF) pb, which we use to provide the best result, including an estimate of suppressed contributions: σpp→H+X(EW,best)=2.11±0.28 (theory) pb.
2021
High Energy Physics - Phenomenology; High Energy Physics - Phenomenology
01 Pubblicazione su rivista::01a Articolo in rivista
Next-to-leading order corrections to light-quark mixed QCD-EW contributions to Higgs boson production / Becchetti, M.; Bonciani, R.; Del Duca, V.; Hirschi, V.; Moriello, F.; Schweitzer, A.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 103:5(2021). [10.1103/PhysRevD.103.054037]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1624410
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