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Title: QCD corrections in Standard Model EFT fits to W Z and W W production

Abstract

We investigate the role of anomalous gauge boson and fermion couplings in the production of W Z and W + W pairs at the LHC to next-to-leading-order (NLO) QCD in the Standard Model effective field theory (SMEFT), including dimension-six operators. Our results are implemented in a publicly available version of the powheg-box. We combine our W Z results in the leptonic final state eνμ +μ with previous W + W results to demonstrate the numerical effects of NLO QCD corrections on the limits on effective couplings derived from ATLAS and CMS 8 and 13 TeV differential measurements. Our study demonstrates the importance of including NLO QCD SMEFT corrections in the W Z analysis, while the effects on W W production are smaller. We also show that the O(1/Λ 4) contributions dominate the analysis, where Λ is the high-energy scale associated with the SMEFT.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]
  1. Univ. of Tübingen (Germany)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS) (SC-27)
OSTI Identifier:
1580629
Alternate Identifier(s):
OSTI ID: 1582565
Report Number(s):
BNL-213539-2020-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ
Grant/Contract Number:  
SC0012704; PHY-1620628; PHY-1915093; SC0014664
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; SMEFT; QCD; SM; EFT; WW; WZ; LHC; ATLAS

Citation Formats

Baglio, Julien, Dawson, Sally, and Homiller, Samuel. QCD corrections in Standard Model EFT fits to WZ and WW production. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.113010.
Baglio, Julien, Dawson, Sally, & Homiller, Samuel. QCD corrections in Standard Model EFT fits to WZ and WW production. United States. doi:10.1103/PhysRevD.100.113010.
Baglio, Julien, Dawson, Sally, and Homiller, Samuel. Mon . "QCD corrections in Standard Model EFT fits to WZ and WW production". United States. doi:10.1103/PhysRevD.100.113010.
@article{osti_1580629,
title = {QCD corrections in Standard Model EFT fits to WZ and WW production},
author = {Baglio, Julien and Dawson, Sally and Homiller, Samuel},
abstractNote = {We investigate the role of anomalous gauge boson and fermion couplings in the production of WZ and W+W– pairs at the LHC to next-to-leading-order (NLO) QCD in the Standard Model effective field theory (SMEFT), including dimension-six operators. Our results are implemented in a publicly available version of the powheg-box. We combine our WZ results in the leptonic final state eνμ+μ– with previous W+W– results to demonstrate the numerical effects of NLO QCD corrections on the limits on effective couplings derived from ATLAS and CMS 8 and 13 TeV differential measurements. Our study demonstrates the importance of including NLO QCD SMEFT corrections in the WZ analysis, while the effects on WW production are smaller. We also show that the O(1/Λ4) contributions dominate the analysis, where Λ is the high-energy scale associated with the SMEFT.},
doi = {10.1103/PhysRevD.100.113010},
journal = {Physical Review D},
number = 11,
volume = 100,
place = {United States},
year = {2019},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.113010

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