Implementation of electroweak corrections in the POWHEG BOX: single W production

Barzè, L.; Montagna, G.; Nason, Paolo; Nicrosini, O.; Piccinini, F.

doi:10.1007/jhep04(2012)037

Cited by 79 publications

(109 citation statements)

References 70 publications

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“…They are implemented in flexible NLO Monte Carlo programs [46][47][48][49][50][51][52], and merged with QCD parton shower [53][54][55][56] in the MC@NLO [57] and POWHEG [58] frameworks.…”

Section: Jhep09(2016)091mentioning

confidence: 99%

Two-loop master integrals for the mixed EW-QCD virtual corrections to Drell-Yan scattering

Bonciani

Vita

Mastrolia

et al. 2016

J. High Energ. Phys.

105

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We present the calculation of the master integrals needed for the two-loop QCD×EW corrections to q +q → l − + l + and q +q → l − + ν , for massless external particles. We treat the W and Z bosons as degenerate in mass. We identify three types of diagrams, according to the presence of massive internal lines: the no-mass type, the onemass type, and the two-mass type, where all massive propagators, when occurring, contain the same mass value. We find a basis of 49 master integrals and evaluate them with the method of the differential equations. The Magnus exponential is employed to choose a set of master integrals that obeys a canonical system of differential equations. Boundary conditions are found either by matching the solutions onto simpler integrals in special kinematic configurations, or by requiring the regularity of the solution at pseudothresholds. The canonical master integrals are finally given as Taylor series around d = 4 spacetime dimensions, up to order four, with coefficients given in terms of iterated integrals, respectively up to weight four.

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“…They are implemented in flexible NLO Monte Carlo programs [46][47][48][49][50][51][52], and merged with QCD parton shower [53][54][55][56] in the MC@NLO [57] and POWHEG [58] frameworks.…”

Section: Jhep09(2016)091mentioning

confidence: 99%

Two-loop master integrals for the mixed EW-QCD virtual corrections to Drell-Yan scattering

Bonciani

Vita

Mastrolia

et al. 2016

J. High Energ. Phys.

105

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“…We also study the effects of photon radiation in the DY process at the LHC, and point out several interesting kinematic features that occur as a result of the imposed experimental cuts. Our combination of fixed-order QCD at NNLO with the NLO EW corrections is complementary to other efforts which combine NLO QCD plus parton-shower effects with the EW corrections to W -boson production [25,26].…”

Section: Introductionmentioning

confidence: 99%

Combining QCD and electroweak corrections to dilepton production in the framework of the FEWZ simulation code

2012

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We combine the next-to-next-to-leading order (NNLO) QCD corrections to lepton-pair production through the Drell-Yan mechanism with the next-to-leading order (NLO) electroweak corrections within the framework of the FEWZ simulation code. Control over both sources of higher-order contributions is necessary for measurements where percent-level theoretical predictions are crucial, and in phase-space regions where the NLO electroweak corrections grow large. The inclusion of both corrections in a single simulation code eliminates the need to separately incorporate such effects as final-state radiation and electroweak Sudakov logarithms when comparing many experimental results to theory. We recalculate the NLO electroweak corrections in the complex-mass scheme for both massless and massive final-state leptons, and modify the QCD corrections in the original FEWZ code to maintain consistency with the complex-mass scheme to the lowest order. We present phenomenological results for LHC studies that include both NNLO QCD and NLO electroweak corrections. In addition, we study several interesting kinematics features induced by experimental cuts in the distribution of photon radiation at the LHC. *

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“…In this report, the authors of the MC codes DYNNLO [5], DYNNLOPS [6], FEWZ [7,8], HORACE [4,[9][10][11], PHOTOS [12], POWHEG [13], POWHEG _BMNNP [14], POWHEG _ BMNNPV [15], POWHEG _BW [16], RADY [17,18], SANC [19,20], SHERPA NNLO+PS [21], WINHAC [22][23][24], and WZGRAD [25][26][27], provide predictions for a number of observables relevant to the study of charged (CC) and neutralcurrent (NC) Drell-Yan processes at the LHC and LHCb. 1 Most of these codes first have been compared, using a common choice of input parameters, PDFs, renormalization and factorization scales, and acceptance cuts (tuned comparison), to test the level of technical agreement at leading order (LO), NLO EW and QCD and NNLO QCD, before studying the impact of higher-order effects.…”

Section: Introductionmentioning

confidence: 99%

Precision studies of observables in $$p p \rightarrow W \rightarrow l\nu _l$$ p p → W → l ν l and $$ pp \rightarrow \gamma ,Z \rightarrow l^+ l^-$$ p p → γ , Z → l + l - processes at the LHC

et al. 2017

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This report was prepared in the context of the LPCC Electroweak Precision Measurements at the LHC WG (https://lpcc.web.cern.ch/lpcc/index.php?page=electroweak_ wg) and summarizes the activity of a subgroup dedicated to the systematic comparison of public Monte Carlo codes, which describe the Drell-Yan processes at hadron colliders, in particular at the CERN Large Hadron Collider (LHC). This work represents an important step towards the definition of an accurate simulation framework necessary for very high-precision measurements of electroweak (EW) observables such as the W boson mass and the weak mixing angle. All the codes considered in this report share at least nexta e-mail: alessandro.vicini@mi.infn.it b e-mail: dow@ubpheno.physics.buffalo.edu to-leading-order (NLO) accuracy in the prediction of the total cross sections in an expansion either in the strong or in the EW coupling constant. The NLO fixed-order predictions have been scrutinized at the technical level, using exactly the same inputs, setup and perturbative accuracy, in order to quantify the level of agreement of different implementations of the same calculation. A dedicated comparison, again at the technical level, of three codes that reach next-to-nextto-leading-order (NNLO) accuracy in quantum chromodynamics (QCD) for the total cross section has also been performed. These fixed-order results are a well-defined reference that allows a classification of the impact of higher-order sets of radiative corrections. Several examples of higherorder effects due to the strong or the EW interaction are discussed in this common framework. Also the combination 123 280 Page 2 of 53 Eur. Phys. J. C (2017) 77 :280 of QCD and EW corrections is discussed, together with the ambiguities that affect the final result, due to the choice of a specific combination recipe. All the codes considered in this report have been run by the respective authors, and the results presented here constitute a benchmark that should be always checked/reproduced before any high-precision analysis is conducted based on these codes. In order to simplify these benchmarking procedures, the codes used in this report, together with the relevant input files and running instructions, can be found in a repository at https://twiki.cern.ch/twiki/ bin/view/Main/DrellYanComparison.

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Implementation of electroweak corrections in the POWHEG BOX: single W production

Cited by 79 publications

References 70 publications

Two-loop master integrals for the mixed EW-QCD virtual corrections to Drell-Yan scattering

Two-loop master integrals for the mixed EW-QCD virtual corrections to Drell-Yan scattering

Combining QCD and electroweak corrections to dilepton production in the framework of the FEWZ simulation code

Precision studies of observables in $$p p \rightarrow W \rightarrow l\nu _l$$ p p → W → l ν l and $$ pp \rightarrow \gamma ,Z \rightarrow l^+ l^-$$ p p → γ , Z → l + l - processes at the LHC

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