Measurements of the t(t)over-bar production cross section in lepton plus jets final states in pp collisions at 8 and ratio of 8 to 7 cross sections
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | European Physical Journal C (Q1) | ||
| Dergi ISSN | 1434-6044 Dergi Bilgileri (2017) | ||
| Makale Dili | İngilizce | Basım Tarihi | 01-2017 |
| Cilt / Sayı / Sayfa | 77 / 1 / 1–27 | DOI | 10.1140/epjc/s10052-016-4504-z |
| Makale Linki | https://helda.helsinki.fi/server/api/core/bitstreams/c56eba5b-dbf4-4e2a-8d72-70cd2684118b/content | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| A measurement of the top quark pair production (tt) cross section in proton–proton collisions at the centre-of-mass energy of 8 TeV is presented using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.6 fb− 1. This analysis is performed in the tt decay channels with one isolated, high transverse momentum electron or muon and at least four jets, at least one of which is required to be identified as originating from hadronization of ab quark. The calibration of the jet energy scale and the efficiency of b jet identification are determined from data. The measured tt cross section is 228. 5±3. 8 (stat)±13. 7 (syst)±6. 0 (lumi) pb. This measurement is compared with an analysis of 7 TeV data, corresponding to an integrated luminosity of 5.0 fb− 1, to determine the ratio of 8TeV to 7TeV cross sections, which is found to be 1. 43±0. 04 (stat)±0. 07 (syst)±0. 05 (lumi). The measurements are in agreement with QCD predictions up to next-to-next-to-leading order. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 48 |
| Scopus | 43 |