Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(ESCI dergilerinde yayınlanan tam makale)
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| Dergi Adı | Journal of High Energy Physics | ||
| Dergi ISSN | 1126-6708 | ||
| Makale Dili | İngilizce | Basım Tarihi | 02-2020 |
| Cilt / Sayı / Sayfa | 2020 / 2 / 191–0 | DOI | 10.1007/JHEP02(2020)191 |
| Makale Linki | https://escholarship.org/uc/item/2g2958fv | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| The cross section of top quark pair production is measured in the tt→(ℓνℓ)(τhντ) bbtt→(ℓ ℓ)(τh τ) 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 σttσtt= 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 tttt 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/ll ℓτh/ = 0.973±0.009 (stat)±0.066 (syst), consistent with lepton universality. |
| Anahtar Kelimeler |
| Hadron-Hadron scattering (experiments) | Top physics |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 3 |
| Scopus | 10 |