Measurement of the top quark pair production cross section in dilepton final states containing one $$\tau$$ lepton in pp collisions at $$\sqrt{s}=$$ 13 TeV
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The cross section of top quark pair production is measured in the $$\mathrm{t\bar{t}}\to (\ell\nu_{\ell})(\tau_\mathrm{h}\nu_{\tau})\mathrm{b\bar{b}}$$ final state, where $$\tau_\mathrm{h}$$ refers to the hadronic decays of the $$\tau$$ lepton, and $$\ell$$ is either an electron or a muon. The data sample corresponds to an integrated luminosity of 35.9 fb$$^{-1}$$ collected in proton-proton collisions at $$\sqrt{s}=$$ 13 TeV with the CMS detector. The measured cross section is $$\sigma_{\mathrm{t\bar{t}}} =$$ 781 $$\pm$$ 7 (stat) $$\pm$$ 62 (syst) $$\pm$$ 20 (lum) pb, and the ratio of the partial width $$\Gamma($$t$$\to\tau\nu_{\tau}$$b) to the total decay width of the top quark is measured to be 0.1050 $$\pm$$ 0.0009 (stat) $$\pm$$ 0.0071 (syst). This is the first measurement of the $$\mathrm{t\bar{t}}$$ production cross section in proton-proton collisions at $$\sqrt{s}=$$ 13 TeV that explicitly includes $$\tau$$ leptons. The ratio of the cross sections in the $$\ell\tau_\mathrm{h}$$ and $$\ell\ell$$ final states yields a value $$R_{\ell\tau_\mathrm{h}/\ell\ell}=$$ 0.973 $$\pm$$ 0.009 (stat) $$\pm$$ 0.066 (syst), consistent with lepton universality.
- Research Organization:
- ABC Federal U.; AGH-UST, Cracow; Aachen, Tech. Hochsch.; Adiyaman U.; Alabama U.; Andes U., Bogota; Antioquia U.; Antwerp U.; Athens U.; Auckland U.; Bangalore, Indian Inst. Sci.; Bari Polytechnic; Bari U.; Basilicata U., Potenza; Baylor U.; BeiHang U.; Beijing, GUCAS; Beijing, Inst. High Energy Phys.; Belgrade U.; Bethel Coll.; Beykent U.; Bhabha Atomic Res. Ctr.; Bhubaneswar, Inst. Phys.; Bhubaneswar, NISER; Bingöl U.; Bogazici U.; Bologna U.; Boskovic Inst., Zagreb; Boston U.; Brandenburg Tech. U.; Bristol U.; Brown U.; Brunel U.; Brussels U.; Budapest, RMKI; CC, Villeurbanne; CERN; CHEP, Taegu; CINVESTAV, IPN; Cairo, Acad. Sci. Res. Tech.; Caltech; Cantabria Inst. of Phys.; Canterbury U.; Carnegie Mellon U.; Catania U.; Catholic U. America; Charles U.; Chonnam Natl. U.; Chulalongkorn U.; Colombo U.; Colorado U.; Conacyt, Mexico; Cornell U.; Cukurova U.; Cyprus U.; DESY; Debrecen, Inst. Nucl. Res.; Delhi U.; Democritos Nucl. Res. Ctr.; Dubna, JINR; EKU KRC, Gyongyos; Ecole Polytechnique; Eotvos U.; Erzincan U.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Florence U.; Florida Inst. Tech.; Florida Intl. U.; Florida State U.; Florida U.; Frascati; GTU, Tbilisi; Gaziosmanpasa U.; Gent U.; Guglielmo Marconi U.; Hacettepe U.; Hamburg U.; Hanyang U.; Haute Alsace U.; Helsinki Inst. of Phys.; Helsinki U.; Helwan U.; IISER, Pune; INFN, Bari; INFN, Bologna; INFN, Catania; INFN, Florence; INFN, Genoa; INFN, Milan Bicocca; INFN, Naples; INFN, Padua; INFN, Pavia; INFN, Perugia; INFN, Pisa; INFN, Rome; INFN, Trieste; INFN, Turin; IPM, Tehran; IRFU, Saclay; Iberoamericana U.; Illinois U., Chicago; Imperial Coll., London; Indian Inst. Tech., Bhubaneswar; Indian Inst. Tech., Madras; Inst. Scintill. Mat., Kharkiv; Ioannina U.; Iowa U.; Isfahan Tech. U.; Istanbul Aydin U.; Istanbul Bilgi U.; Istanbul U.; Istanbul, Tech. U.; Izmir Inst. Tech.; Johns Hopkins U.; KIT, Karlsruhe, EKP; Kafkas U.; Kansas State U.; Kansas U.; Karamanoglu Mehmetbey U., Karaman; Kharkov, KIPT; Korea U.; Kyung Hee U.; LIP, Lisbon; Lappeenranta U. Tech.; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lebedev Inst.; Louvain U.; Lyon, IPN; MIT; MOSTI, Malaysian Nucl. Agency, Kajang; Madrid, Autonoma U.; Madrid, CIEMAT; Malaya U.; Marmara U.; Maryland U.; Mersin U.; Middle East Tech. U., Ankara; Milan Bicocca U.; Mimar Sinan U.; Minnesota U.; Minsk, Inst. Nucl. Problems; Mississippi U.; Monash U.; Montenegro U.; Moscow Phys. Eng. Inst.; Moscow State U.; Moscow, INR; Moscow, ITEP; Moscow, MIPT; NCBJ, Swierk; NICPB, Tallinn; Naples U.; Natl. Tech. U., Athens; Nebraska U.; Northeastern U.; Northwestern U.; Notre Dame U.; Novosibirsk State U.; Novosibirsk, IYF; Ohio State U.; Oviedo U.; Ozyegin U.; PSI, Villigen; Padua U.; Panjab U.; Pavia U.; Peking U.; Pelotas U.; Perugia U.; Piemonte Orientale U., Novara; Piri Reis U., Istanbul; Pisa U.; Pisa, Scuola Normale Superiore; Princeton U.; Puebla U., Inst. Fis.; Puerto Rico U., Mayaguez; Purdue U.; Purdue U., Calumet; Quaid-i-Azam U.; Quito, Escuela Politecnica Natl.; Rice U.; Riga Tech. U.; Rio Grande do Sul U.; Rio de Janeiro State U.; Rio de Janeiro, CBPF; Rochester U.; Rome U.; Ruhuna U.; Rutgers U., Piscataway; Rutherford; SUNY, Buffalo; Saha Inst.; San Francisco de Quito U.; San Luis Potosi U.; Sao Paulo, IFT; Sejong U.; Seoul Natl. U.; Seoul U.; Serpukhov, IHEP; Siena U.; Sinop U.; Sofiya U.; Sofiya, Inst. Nucl. Res.; Sonora U.; Southampton U.; Split Tech. U.; Split U.; St. Petersburg Polytechnic Inst.; St. Petersburg, INP; Stefan Meyer Inst. Subatomare Phys.; Strasbourg, IPHC; Sungkyunkwan U.; TIFR, Mumbai, DHEP; TU Vienna; Taiwan, Natl. Central U.; Taiwan, Natl. Taiwan U.; Tbilisi State U.; Tennessee U.; Texas A&M U. Qatar, Doha; Texas A-M; Texas Tech.; Tomsk Polytechnic U.; Trieste U.; Tsinghua U., Beijing; Turin U.; U. Campinas; U. Debrecen, Inst. Phys.; U. Genoa; UC, Davis; UC, Riverside; UC, San Diego; UC, Santa Barbara; UCLA; Univ. of Colorado, Boulder, CO (United States); University Coll., Dublin; VINCA Inst. Nucl. Sci., Belgrade; Vanderbilt U.; Vienna, OAW; Vilnius U.; Virginia U.; Visva Bharati U.; Vrije U., Brussels; Warsaw U.; Warsaw U. of Tech.; Wayne State U.; Wisconsin U., Madison; Yerevan Phys. Inst.; Zewail City Sci. Technol., Giza; Zhejiang U.; Zurich U.; Zurich, ETH
- Sponsoring Organization:
- US Department of Energy; USDOE; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Contributing Organization:
- The CMS collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC02-07CH11359; SC0010005
- OSTI ID:
- 1597071
- Alternate ID(s):
- OSTI ID: 1616107
OSTI ID: 1637454
- Report Number(s):
- CERN-EP-2019-255; CMS-TOP-18-005; FERMILAB-PUB-20-050-CMS; oai:inspirehep.net:1767671; arXiv:1911.13204
- Journal Information:
- JHEP, Journal Name: JHEP Vol. 02
- Country of Publication:
- United States
- Language:
- English
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