One-loop corrections to the Drell–Yan process in SANC

Arbuzov, A. B.; Bardin, D. Y.; Bondarenko, S.; Christova, P.; Kalinovskaya, L. V.; Nanava, G.; Sadykov, R.

doi:10.1140/epjc/s10052-008-0531-8

Cited by 105 publications

(97 citation statements)

References 29 publications

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“…For the purpose of this comparison, the more relevant difference to explain is the difference in shape (and absolute value) for p Z ⊥ ∈ [20,100] GeV, that we will address in the next paragraph. At very high p Z ⊥ , differences are also fairly large, but in that region they can be mostly attributed to the MiNLO scale choice: when p Z ⊥ is large (above M Z ), the MiNLO Sudakov form factor switches off, but the strong coupling is evaluated at p Z ⊥ , whereas in SHERPA NNLO+PS and in the fixed-order calculation it is evaluated at the dilepton invariant mass m ll .…”

Section: Fig 22mentioning

confidence: 99%

“…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%

See 1 more Smart Citation

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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Section: Fig 22mentioning

confidence: 99%

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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“…The main difference between formula (25) and (26) is that (25) in formula (11). For formula (26) different kinematical conditions (in fact of initial-state emissions) were taken into considerations.…”

Section: Setup For Comparison and Numerical Resultsmentioning

confidence: 99%

“…1. The PHOTOS [2][3][4][5][6][7][8] and SANC [9][10][11][12][13][14][15][16][17][18] Monte Carlo programs use different an approximations for the effect under study. We will show the program features important for effect of pair emissions respectively in Section 2 and 3.…”

Section: Introductionmentioning

confidence: 99%

Extra Lepton Pair Emission Corrections to Drell--Yan Processes in PHOTOS and SANC

Antropov¹,

Arbuzov²,

Sadykov³

et al. 2017

Acta Phys. Pol. B

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In the paper we present results for final state emissions of lepton pairs in decays of heavy intermediate states such as Z boson. Short presentations of PHOTOS and SANC algorithms and physics assumptions are given. Numerical distributions of relevance for LHC observables are shown. They are used in discussions of systematic errors in the predictions of pair emissions as implemented in the two programs. Suggestions for the future works are given. Present results confirm, that for the precision of 0.3% level, in simulation of final state the pair emissions can be avoided. For the precision of 0.1-0.2%, the results obtained with the presented programs should be enough. To cross precision tag of 0.1%, the further work is however required.

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“…[26][27][28][29] and in those of Refs. [8][9][10][30][31][32][33] respectively with NNLO-QCD and NLO-EW accuracy for the cross section. The inclusion of subsets of dominant higher-order corrections, going beyond the fixed-order description of Eq.…”

Section: Introductionmentioning

confidence: 99%

Double-real corrections at $${{\mathcal {O}}(\alpha \alpha _s)}\,$$to single gauge boson production

et al. 2017

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We consider the O(αα s ) corrections to single onshell gauge boson production at hadron colliders. We concentrate on the contribution of all the subprocesses where the gauge boson is accompanied by the emission of two additional real partons and we evaluate the corresponding total cross sections. The latter are divergent quantities, because of soft and collinear emissions, and are expressed as Laurent series in the dimensional regularization parameter. The total cross sections are evaluated by means of reverse unitarity, i.e. expressing the phase-space integrals in terms of two-loop forward box integrals with cuts on the final-state particles. The results are reduced to a combination of master integrals, which eventually are evaluated in terms of generalized polylogarithms. The presence of internal massive lines in the Feynman diagrams, due to the exchange of electroweak gauge bosons, causes the appearance of 14 master integrals which were not previously known in the literature and have been evaluated via differential equations.

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One-loop corrections to the Drell–Yan process in SANC

Cited by 105 publications

References 29 publications

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

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

Extra Lepton Pair Emission Corrections to Drell--Yan Processes in PHOTOS and SANC

Double-real corrections at $${{\mathcal {O}}(\alpha \alpha _s)}\,$$to single gauge boson production

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