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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

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 setsmore » 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.« less

Authors:
 [1];  [2];  [1];  [3];  [4];  [2];  [5];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [1];  [13];  [14];  [15];  [3] more »;  [3];  [16];  [17];  [5];  [18];  [5];  [19];  [10];  [20];  [1];  [9];  [16];  [7];  [4];  [12];  [21] « less
  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Physics Dept.
  2. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Physics Dept.; Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
  3. Univ. of Pavia (Italy). Dept. of Physics; Istituto Nazionale di Fisica Nucleare (INFN), Pavia (Italy)
  4. Univ. at Buffalo, NY (United States). Dept. of Physics
  5. Istituto Nazionale di Fisica Nucleare (INFN), Pavia (Italy)
  6. Univ. of Freiburg (Germany). Inst. of Physics
  7. Univ. di Milano (Italy). Tif Lab, Dipartimento di Fisica; Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  8. Univ. de Buenos Aires (Argentina). Dept. de Fisica; Univ. Nacional de San Martin, Buenos Aires (Argentina). International Center for Advanced Studies (ICAS)
  9. Univ. of Zurich (Switzerland). Physik-Inst.
  10. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  11. Federal Inst. of Technology, Zurich (Switzerland)
  12. Polish Academy of Sciences (PAS), Krakow (Poland). Inst. of Nuclear Physics
  13. Univ. of Oxford (United Kingdom). Rudolf Peierls Centre for Theoretical Physics
  14. Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology, Dept. of Physics
  15. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  16. RWTH Aachen Univ. (Germany). Inst. for Theoretical Particle Physics and Cosmology
  17. Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  18. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  19. Jagiellonian Univ., Krakow (Poland). Marian Smoluchowski Inst. of Physics
  20. Univ. Savoie Mont Blanc, Annecy-le-Vieux (France)
  21. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Physics Dept.; Univ. of Oxford (United Kingdom). Rudolf Peierls Centre for Theoretical Physics
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1345646
Report Number(s):
CERN-TH-2016-137; CERN-LPCC-2016-002; FERMILAB-PUB-16-230-PPD-T
Journal ID: ISSN 1434-6044; 1468163
Grant/Contract Number:
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 77; Journal Issue: 5; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Alioli, S., Arbuzov, A. B., Bardin, D. Yu., Barzè, L., Bernaciak, C., Bondarenko, S. G., Carloni Calame, C. M., Chiesa, M., Dittmaier, S., Ferrera, G., de Florian, D., Grazzini, M., Höche, S., Huss, A., Jadach, S., Kalinovskaya, L. V., Karlberg, A., Krauss, F., Li, Y., Martinez, H., Montagna, G., Mück, A., Nason, P., Nicrosini, O., Petriello, F., Piccinini, F., Płaczek, W., Prestel, S., Re, E., Sapronov, A. A., Schönherr, M., Schwinn, C., Vicini, A., Wackeroth, D., Was, Z., and Zanderighi, G.. 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. United States: N. p., 2017. Web. doi:10.1140/epjc/s10052-017-4832-7.
Alioli, S., Arbuzov, A. B., Bardin, D. Yu., Barzè, L., Bernaciak, C., Bondarenko, S. G., Carloni Calame, C. M., Chiesa, M., Dittmaier, S., Ferrera, G., de Florian, D., Grazzini, M., Höche, S., Huss, A., Jadach, S., Kalinovskaya, L. V., Karlberg, A., Krauss, F., Li, Y., Martinez, H., Montagna, G., Mück, A., Nason, P., Nicrosini, O., Petriello, F., Piccinini, F., Płaczek, W., Prestel, S., Re, E., Sapronov, A. A., Schönherr, M., Schwinn, C., Vicini, A., Wackeroth, D., Was, Z., & Zanderighi, G.. 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. United States. doi:10.1140/epjc/s10052-017-4832-7.
Alioli, S., Arbuzov, A. B., Bardin, D. Yu., Barzè, L., Bernaciak, C., Bondarenko, S. G., Carloni Calame, C. M., Chiesa, M., Dittmaier, S., Ferrera, G., de Florian, D., Grazzini, M., Höche, S., Huss, A., Jadach, S., Kalinovskaya, L. V., Karlberg, A., Krauss, F., Li, Y., Martinez, H., Montagna, G., Mück, A., Nason, P., Nicrosini, O., Petriello, F., Piccinini, F., Płaczek, W., Prestel, S., Re, E., Sapronov, A. A., Schönherr, M., Schwinn, C., Vicini, A., Wackeroth, D., Was, Z., and Zanderighi, G.. 2017. "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". United States. doi:10.1140/epjc/s10052-017-4832-7. https://www.osti.gov/servlets/purl/1345646.
@article{osti_1345646,
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},
author = {Alioli, S. and Arbuzov, A. B. and Bardin, D. Yu. and Barzè, L. and Bernaciak, C. and Bondarenko, S. G. and Carloni Calame, C. M. and Chiesa, M. and Dittmaier, S. and Ferrera, G. and de Florian, D. and Grazzini, M. and Höche, S. and Huss, A. and Jadach, S. and Kalinovskaya, L. V. and Karlberg, A. and Krauss, F. and Li, Y. and Martinez, H. and Montagna, G. and Mück, A. and Nason, P. and Nicrosini, O. and Petriello, F. and Piccinini, F. and Płaczek, W. and Prestel, S. and Re, E. and Sapronov, A. A. and Schönherr, M. and Schwinn, C. and Vicini, A. and Wackeroth, D. and Was, Z. and Zanderighi, G.},
abstractNote = {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.},
doi = {10.1140/epjc/s10052-017-4832-7},
journal = {European Physical Journal. C, Particles and Fields},
number = 5,
volume = 77,
place = {United States},
year = 2017,
month = 5
}

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