Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV
| Parent link: | Journal of High Energy Physics Vol. 2020, iss. 2.— 2020.— [191, 40 p.] |
|---|---|
| Ente Autore: | |
| Altri autori: | , , , , , |
| Riassunto: | Title screen The cross section of top quark pair production is measured in the tt¯→(ℓνℓ)(τhντ)bb¯¯ final state, where τh refers to the hadronic decays of the τ lepton, and ℓ 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 √s = 13 TeV with the CMS detector. The measured cross section is σtt¯σtt¯ = 781 ± 7 (stat) ± 62 (syst) ± 20 (lumi) pb, and the ratio of the partial width Γ(t → τντb) to the total decay width of the top quark is measured to be 0.1050 ± 0.0009 (stat) ± 0.0071 (syst). This is the first measurement of the tt¯tt¯ production cross section in proton-proton collisions at √s = 13 TeV that explicitly includes τ leptons. The ratio of the cross sections in the ℓτh and ℓℓ final states yields a value Rℓτh/llRℓτh/ll = 0.973 ± 0.009 (stat) ± 0.066 (syst), consistent with lepton universality. |
| Lingua: | inglese |
| Pubblicazione: |
2020
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| Soggetti: | |
| Accesso online: | https://doi.org/10.1007/JHEP02(2020)191 |
| Natura: | Elettronico Capitolo di libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666285 |
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| 200 | 1 | |a Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV |f A. M. Sirunyan, A. R. Tumasyan, W. Adam [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 66 tit.] | ||
| 330 | |a The cross section of top quark pair production is measured in the tt¯→(ℓνℓ)(τhντ)bb¯¯ final state, where τh refers to the hadronic decays of the τ lepton, and ℓ 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 √s = 13 TeV with the CMS detector. The measured cross section is σtt¯σtt¯ = 781 ± 7 (stat) ± 62 (syst) ± 20 (lumi) pb, and the ratio of the partial width Γ(t → τντb) to the total decay width of the top quark is measured to be 0.1050 ± 0.0009 (stat) ± 0.0071 (syst). This is the first measurement of the tt¯tt¯ production cross section in proton-proton collisions at √s = 13 TeV that explicitly includes τ leptons. The ratio of the cross sections in the ℓτh and ℓℓ final states yields a value Rℓτh/llRℓτh/ll = 0.973 ± 0.009 (stat) ± 0.066 (syst), consistent with lepton universality. | ||
| 461 | |t Journal of High Energy Physics | ||
| 463 | |t Vol. 2020, iss. 2 |v [191, 40 p.] |d 2020 | ||
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| 701 | 1 | |a Ambrogi |b F. |g Federico | |
| 701 | 1 | |a Tyurin |b N. E. |g Nikolay Evgenjevich | |
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