Abstract
This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at s = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb−1 at s = 7 TeV and 12.2 to 20.3 fb−1 at s = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: t-channel, tW, and s-channel. The combined t-channel cross-sections are 67.5 ± 5.7 pb and 87.7 ± 5.8 pb at s = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 ± 4.1 pb and 23.1 ± 3.6 pb at s = 7 and 8 TeV respectively. For the s-channel cross-section, the combination yields 4.9 ± 1.4 pb at s = 8 TeV. The square of the magnitude of the CKM matrix element Vtb multiplied by a form factor fLV is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation |Vtd|, |Vts| ≪ |Vtb|. All the |fLVVtb|2 determinations, extracted from individual ratios at s = 7 and 8 TeV, are combined, resulting in |fLVVtb| = 1.02 ± 0.04 (meas.) ± 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions.[Figure not available: see fulltext.].
Original language | English |
---|---|
Article number | 88 |
Journal | Journal of High Energy Physics |
Volume | 2019 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 May 2019 |
Bibliographical note
Publisher Copyright:© 2019, The Author(s).
Funding
MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.). We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS and CMS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZSˇ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, CRC and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Sklo dowska-Curie Actions, European Union; Investisse-ments d’ Avenir Labex and Idex, ANR, France; DFG and AvH Foundation, Germany; Her-akleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA Programme Generalitat de Catalunya, Spain; The Royal Society and Leverhulme Trust, United Kingdom. We acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); Open Access, Copyright CERN, for the benefit of the ATLAS-CMS Collaboration. Article funded by SCOAP3.
Funders | Funder number |
---|---|
Not added | ST/L006162/1, ST/N000307/1, ST/N000331/1, ST/N000242/1 |
BSF-NSF | |
CEA-DRF | |
CPAN | |
Cantons of Bern and Geneva | |
Czech Republic | |
DNSRC | IN2P3-CNRS |
ERC IUT | |
EU-ESF | |
Excellence of Science | 30820817 |
FRIA-Belgium | |
Horizon 2020, and Marie Sklo dowska-Curie Actions | |
IRFU | |
IWT-Belgium | |
LNS | |
MES of Russia | |
MESTD | |
MNE | |
MON | |
MSES | |
MSHE | |
MSMT | |
MSSR | |
MoER | |
PCTI | |
Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu | MDM-2015-0509 |
RGC | |
STAR | |
Swiss Funding Agencies | |
TUBITAK | |
UASLP-FAI | |
VSC CR | |
Wallenberg Foundation | |
National Science Foundation | |
U.S. Department of Energy | |
Alfred P. Sloan Foundation | |
Welch Foundation | C-1845 |
Hispanics in Philanthropy | |
Maryland Ornithological Society | |
Alexander von Humboldt-Stiftung | |
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS) | |
Qatar National Research Fund | |
Secretaría de Educación Pública | |
Türkiye Atom Enerjisi Kurumu | |
Horizon 2020 Framework Programme | |
Weston Havens Foundation | |
Louisiana Academy of Sciences | |
Missouri University of Science and Technology | |
Arizona-Nevada Academy of Science | |
CERN | |
Thailand Center of Excellence in Physics | |
Cosmetic Surgery Foundation | |
Glycemic Index Foundation | |
Institute for the Promotion of Teaching Science and Technology | |
Natural Sciences and Engineering Research Council of Canada | |
National Research Council Canada | |
Canada Foundation for Innovation | |
Science and Technology Facilities Council | ST/N000234/1 |
Leverhulme Trust | |
Royal Society | |
European Commission | |
European Research Council | |
European Cooperation in Science and Technology | |
Australian Research Council | |
Neurosurgical Research Foundation | |
Department of Science and Technology, Ministry of Science and Technology, India | |
Council of Scientific and Industrial Research, India | |
Ministry of Education - Singapore | |
Singapore Eye Research Institute | |
Department of Atomic Energy, Government of India | |
Science Foundation Ireland | |
Helmholtz-Gemeinschaft | |
Deutsche Forschungsgemeinschaft | |
Agence Nationale de la Recherche | |
Japan Society for the Promotion of Science | |
Ministry of Education, Culture, Sports, Science and Technology | |
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | |
Danmarks Grundforskningsfond | |
Fundação de Amparo à Pesquisa do Estado de São Paulo | |
National Natural Science Foundation of China | |
Research Promotion Foundation | |
Ministerstvo Školství, Mládeže a Tělovýchovy | |
National Science Council | |
Fundacja na rzecz Nauki Polskiej | |
Fundação para a Ciência e a Tecnologia | |
Russian Foundation for Basic Research | |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
Suomen Akatemia | |
Bundesministerium für Bildung und Forschung | |
Chinese Academy of Sciences | |
Austrian Science Fund | |
Fonds De La Recherche Scientifique - FNRS | |
Russian Academy of Sciences | |
Belgian Federal Science Policy Office | |
Generalitat de Catalunya | |
Comisión Nacional de Investigación Científica y Tecnológica | |
Chulalongkorn University | |
Agencia Nacional de Promoción Científica y Tecnológica | |
Fonds Wetenschappelijk Onderzoek | |
Agentschap voor Innovatie door Wetenschap en Technologie | |
Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture | |
Consejo Nacional de Ciencia y Tecnología | |
Nederlandse Organisatie voor Wetenschappelijk Onderzoek | |
Ministerio de Economía y Competitividad | |
Bundesministerium für Wissenschaft, Forschung und Wirtschaft | |
General Secretariat for Research and Technology | |
Ministry of Business, Innovation and Employment | |
Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
Ministry of Science, ICT and Future Planning | |
Joint Institute for Nuclear Research | |
Magyar Tudományos Akadémia | |
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science | |
Israel Science Foundation | |
Instituto Nazionale di Fisica Nucleare | |
A.G. Leventis Foundation | |
National Science and Technology Development Agency | Thailand |
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul | |
Narodowe Centrum Nauki | 2014/15/B/ST2/03998, 2012/07/E/ST2/01406, 2015/19/B/ST2/02861, 2014/14/M/ST2/00428, 2014/13/B/ST2/02543 |
Secretaría de Educación Superior, Ciencia, Tecnología e Innovación | |
Javna Agencija za Raziskovalno Dejavnost RS | |
Universiti Malaya | |
Ministerstwo Nauki i Szkolnictwa Wyższego | |
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro | |
Ministry of Science and Technology, Taiwan | |
National Academy of Sciences of Ukraine | |
Ministry of Education and Science | |
Institute for Research in Fundamental Sciences | |
Centre National pour la Recherche Scientifique et Technique | |
Benemérita Universidad Autónoma de Puebla | |
Commissariat à l'Énergie Atomique et aux Énergies Alternatives | |
Secretaría de Estado de Investigación, Desarrollo e Innovación | |
Horizon 2020 | 675440 |
British Columbia Knowledge Development Fund | |
European Regional Development Fund | |
State Atomic Energy Corporation ROSATOM | |
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional | |
Pakistan Atomic Energy Commission | |
State Fund for Fundamental Research of Ukraine | |
Ministry of Science,Technology and Research | |
Beijing Municipal Science and Technology Commission | Z181100004218003 |
Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie | |
Council on grants of the President of the Russian Federation | |
Nemzeti Kutatási, Fejlesztési és Innovaciós Alap | 124845, 123842, 125105, 124850, 123959 |
National Research Center "Kurchatov Institute" | |
Institutul de Fizică Atomică |
Keywords
- Hadron-Hadron scattering (experiments)