@misc{10481/63531,
year = {2020},
month = {8},
url = {http://hdl.handle.net/10481/63531},
abstract = {The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at a centre-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of about 20 fb−1 for each experiment. The measurements used events containing one lepton and having different jet multiplicities in the final state. The results are quoted as fractions of W bosons with longitudinal (F0), left-handed (FL), or right-handed (FR) polarizations. The resulting combined measurements of the polarization fractions are F0 = 0.693 ± 0.014 and FL = 0.315 ± 0.011. The fraction FR is calculated from the unitarity constraint to be FR = −0.008 ± 0.007. These results are in agreement with the standard model predictions at next-to-next-to-leading order in perturbative quantum chromodynamics and represent an improvement in precision of 25 (29)% for F0 (FL) with respect to the most precise single measurement. A limit on anomalous right-handed vector (VR), and left- and right-handed tensor (gL, gR) tWb couplings is set while fixing all others to their standard model values. The allowed regions are [−0.11, 0.16] for VR, [−0.08, 0.05] for gL, and [−0.04, 0.02] for gR, at 95% confidence level. Limits on the corresponding Wilson coefficients are also derived.},
abstract = {Russian Academy of Sciences},
organization = {ANPCyT},
organization = {YerPhI, Armenia},
organization = {Australian Research Council},
organization = {BMWFW, Austria},
organization = {Austrian Science Fund (FWF)},
organization = {Azerbaijan National Academy of Sciences (ANAS)},
organization = {SSTC, Belarus},
organization = {National Council for Scientific and Technological Development (CNPq)},
organization = {Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)},
organization = {Natural Sciences and Engineering Research Council of Canada},
organization = {Canada Foundation for Innovation},
organization = {Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)},
organization = {National Natural Science Foundation of China (NSFC)},
organization = {Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias},
organization = {DNRF, Denmark},
organization = {Danish Natural Science Research Council},
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organization = {Federal Ministry of Education & Research (BMBF)},
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organization = {Greek Ministry of Development-GSRT},
organization = {Hong Kong Research Grants Council},
organization = {Israel Science Foundation},
organization = {Benoziyo Center, Israel},
organization = {Istituto Nazionale di Fisica Nucleare (INFN)},
organization = {Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)

Japan Society for the Promotion of Science},
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organization = {RCN, Norway},
organization = {Ministry of Science and Higher Education, Poland},
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organization = {Portuguese Foundation for Science and Technology},
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organization = {NRC KI, Russian Federation},
organization = {MESTD, Serbia},
organization = {MSSR, Slovakia},
organization = {Slovenian Research Agency - Slovenia},
organization = {MIZS, Slovenia},
organization = {MINECO, Spain},
organization = {Wallenberg Foundation, Sweden},
organization = {SERI, Switzerland},
organization = {Ministry of Science and Technology, Taiwan},
organization = {Ministry of Energy & Natural Resources - Turkey},
organization = {Science & Technology Facilities Council (STFC)},
organization = {United States Department of Energy (DOE)},
organization = {National Science Foundation (NSF)},
organization = {BCKDF, Canada},
organization = {CANARIE, Canada},
organization = {CRC, Canada},
organization = {European Research Council (ERC)},
organization = {European Union (EU)},
organization = {French National Research Agency (ANR)},
organization = {German Research Foundation (DFG)},
organization = {Alexander von Humboldt Foundation},
organization = {Greek NSRF, Greece},
organization = {BSF-NSF, Israel},
organization = {German-Israeli Foundation for Scientific Research and Development},
organization = {CERCA Programme Generalitat de Catalunya, Spain},
organization = {PROMETEO Programme Generalitat Valenciana, Spain},
organization = {Royal Society of London},
organization = {Leverhulme Trust},
organization = {Fonds de la Recherche Scientifique - FNRS},
organization = {FWO},
organization = {CAPES},
organization = {Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ)},
organization = {Foundation for Research Support of the State of Rio Grande do Sul (FAPERGS)},
organization = {Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)},
organization = {MES (Bulgaria)},
organization = {Ministry of Science and Technology, China},
organization = {CSF (Croatia)},
organization = {SENESCYT (Ecuador)},
organization = {MoER, (Estonia)},
organization = {Academy of Finland},
organization = {Spanish Government},
organization = {French Atomic Energy Commission},
organization = {Centre National de la Recherche Scientifique (CNRS)},
organization = {HGF (Germany)},
organization = {Greek Ministry of Development-GSRT},
organization = {NKFIA (Hungary)},
organization = {Department of Atomic Energy (DAE)},
organization = {Department of Science & Technology (India)},
organization = {Science Foundation Ireland},
organization = {Istituto Nazionale di Fisica Nucleare (INFN)},
organization = {NRF (Republic of Korea)},
organization = {MES (Latvia)},
organization = {MOE (Malaysia)},
organization = {UM (Malaysia)},
organization = {BUAP (Mexico)},
organization = {Consejo Nacional de Ciencia y Tecnologia (CONACyT)},
organization = {UASLP-FAI (Mexico)},
organization = {MBIE (New Zealand)},
organization = {PAEC (Pakistan)},
organization = {MSHE (Poland)},
organization = {Portuguese Foundation for Science and Technology},
organization = {JINR (Dubna)},
organization = {RosAtom (Russia)},
organization = {Russian Foundation for Basic Research (RFBR)},
organization = {MESTD (Serbia)},
organization = {SEIDI (Spain)},
organization = {MOSTR (Sri Lanka)},
organization = {Swiss Funding Agencies (Switzerland)},
organization = {NSTDA (Thailand)},
organization = {Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)},
organization = {Ministry of Energy & Natural Resources - Turkey},
organization = {NASU (Ukraine)},
organization = {Horizon 2020 Grant: 	
675440;
752730;
765710},
organization = {Leventis Foundation},
organization = {Alfred P. Sloan Foundation},
organization = {Alexander von Humboldt Foundation},
organization = {Belgian Federal Science Policy Office},
organization = {Fonds de la Recherche Scientifique - FNRS},
organization = {Institute for the Promotion of Innovation by Science and Technology in Flanders (IWT)},
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30820817},
organization = {Beijing Municipal Science & Technology Commission
	
Z191100007219010},
organization = {Ministry of Education, Youth & Sports - Czech Republic},
organization = {German Research Foundation (DFG) EXC 2121
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organization = {Lendulet ("Momentum") Programme},
organization = {Hungarian Academy of Sciences},
organization = {New National Excellence Program UNKP},
organization = {NKFIA (Hungary) 	
123842
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organization = {Council of Scientific & Industrial Research (CSIR) - India},
organization = {HOMING PLUS programme of the Foundation for Polish Science},
organization = {Mobility Plus programme of the Ministry of Science and Higher Education},
organization = {National Science Center (Poland) 	
Harmonia 2014/14/M/ST2/00428
Opus 2014/13/B/ST2/02543
2014/15/B/ST2/03998
2015/19/B/ST2/02861
Sonata-bis 2012/07/E/ST2/01406},
organization = {National Priorities Research Program by Qatar National Research Fund},
organization = {Ministry of Science and Education (Russia) 	
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organization = {Tomsk Polytechnic University Competitiveness Enhancement Program (Russia)},
organization = {"Nauka" Project (Russia) 	
FSWW-2020-0008},
organization = {Programa Estatal de Fomento de la Investigacion Cientfica y Tecnica de Excelencia Mara de Maeztu 	
MDM-2015-0509},
organization = {Programa Severo Ochoa del Principado de Asturias},
organization = {Thalis program},
organization = {Aristeia program},
organization = {Greek Ministry of Development-GSRT},
organization = {Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University},
organization = {Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)},
organization = {Kavli Foundation},
organization = {Nvidia Corporation},
organization = {SuperMicro Corporation},
organization = {The Welch Foundation
	
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organization = {Weston Havens Foundation (U.S.A.)},
organization = {NRC, Canada},
organization = {CERN},
organization = {Chinese Academy of Sciences},
organization = {Ministry of Science and Technology, China},
organization = {SRNSFG, Georgia},
organization = {HGF, Germany},
organization = {Netherlands Organization for Scientific Research (NWO)},
organization = {Netherlands Government},
organization = {MES of Russia},
organization = {JINR},
organization = {DST/NRF, South Africa},
organization = {SRC, Sweden},
organization = {Swiss National Science Foundation (SNSF)},
organization = {Cantons of Bern and Geneva, Switzerland},
organization = {Compute Canada, Canada},
organization = {Marie Sklodowska-Curie Actions},
organization = {COST, European Union},
organization = {Herakleitos program},
organization = {Thales program},
organization = {EU-ESF, Greece},
organization = {Goran Gustafssons Stiftelse, Sweden},
organization = {BMBWF (Austria)},
organization = {National Council for Scientific and Technological Development (CNPq)},
organization = {Chinese Academy of Sciences},
organization = {MSES (Croatia)},
organization = {RPF (Cyprus)},
organization = {Estonian Research Council},
organization = {PUT (Estonia)},
organization = {HIP (Finland)},
organization = {Federal Ministry of Education & Research (BMBF)},
organization = {German Research Foundation (DFG)},
organization = {IPM (Iran)},
organization = {MSIP (Republic of Korea)},
organization = {LAS (Lithuania)},
organization = {CINVESTAV (Mexico)},
organization = {LNS (Mexico)},
organization = {SEP (Mexico)},
organization = {MOS (Montenegro)},
organization = {NSC (Poland)},
organization = {MON (Russia)},
organization = {NRC KI (Russia)},
organization = {CPAN (Spain)},
organization = {PCTI (Spain)},
organization = {MST (Taipei)},
organization = {ThEPCenter (Thailand)},
organization = {IPST (Thailand)},
organization = {STAR (Thailand)},
publisher = {Springer Nature},
keywords = {Hadron-Hadron scattering (experiments)},
keywords = {Top physics},
title = {Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at s√ = 8 TeV},
doi = {10.1007/JHEP08(2020)051},
author = {Aad, G. and Aguilar Saavedra, Juan Antonio and Atlas Collaboration and CMS collaboration},
}