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Article
Report number	arXiv:1606.02330 ; CERN-TH-2016-137 ; CERN-LPCC-2016-002
Title	Precision studies of observables in $p p \rightarrow W \rightarrow l\nu _l$ and $ pp \rightarrow \gamma ,Z \rightarrow l^+ l^-$ processes at the LHC
Related title	Precision Studies of Observables in pp->W->l nu and pp->gamma,Z->l+l- processes at the LHC
Author(s)	Alioli, S. (CERN) ; Arbuzov, A.B. (Dubna, JINR) ; Bardin, D. Yu. (Dubna, JINR) ; Barze, L. (Pavia U., Dept. Fis. 'A. Volta' ; INFN, Pavia) ; Bernaciak, C. (SUNY, Buffalo) ; Bondarenko, S.G. (Dubna, JINR) ; Carloni Calame, C. (INFN, Pavia) ; Chiesa, M. (INFN, Pavia) ; Dittmaier, S. (Freiburg U.) ; Ferrera, G. (Milan U. ; INFN, Milan) ; de Florian, D. (ICAS, UNSAM, Buenos Aires) ; Grazzini, M. (Zurich U.) ; Hoeche, S. (SLAC) ; Huss, A. (ETH, Zurich (main)) ; Jadach, S. (Cracow, INP) ; Kalinovskaya, L.V. (Dubna, JINR) ; Karlberg, A. (Oxford U., Theor. Phys.) ; Krauss, F. (Durham U., IPPP) ; Li, Y. (Fermilab) ; Martinez, H. (Pavia U., Dept. Fis. 'A. Volta' ; INFN, Pavia) ; Montagna, G. (Pavia U., Dept. Fis. 'A. Volta' ; INFN, Pavia) ; Mueck, A. (Aachen, Tech. Hochsch.) ; Nason, P. (INFN, Milan Bicocca) ; Nicrosini, O. (INFN, Pavia) ; Petriello, F. (Northwestern U. ; Argonne) ; Piccinini, F. (INFN, Pavia) ; Placzek, W. (Jagiellonian U.) ; Prestel, S. (SLAC) ; Re, E. (Annecy, LAPTH) ; Sapronov, A.A. (Dubna, JINR) ; Schoenherr, M. (Zurich U.) ; Schwinn, C. (Aachen, Tech. Hochsch.) ; Vicini, A. (Milan U. ; INFN, Milan) ; Wackeroth, D. (SUNY, Buffalo ; Santa Barbara, KITP) ; Was, Z. (Cracow, INP) ; Zanderighi, G. (Oxford U., Theor. Phys.)
Publication	2017-05-03
Imprint	07 Jun 2016
Number of pages	93
Note	Comments: 92 pages, report of the working group on precision calculations for Drell-Yan processes 92 pages, report of the working group on precision calculations for Drell-Yan processes
In:	Eur. Phys. J. C 77 (2017) 280
DOI	10.1140/epjc/s10052-017-4832-7
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	This report was prepared in the context of the LPCC "Electroweak Precision Measurements at the LHC 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 next-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-next-to-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 higher-order effects due to the strong or the EW interaction are discussed in this common framework. Also the combination 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.
Copyright/License	arXiv nonexclusive-distrib. 1.0 preprint: © 2016-2024 CERN (License: CC-BY-4.0) publication: © 2017-2024 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³

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