Measurement of the W-boson helicity in top-quark decays from t(t)over-bar production in lepton plus jets events in pp collisions at √s=7 TeV
Yazarlar (1)
| 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 | 10-2013 |
| Cilt / Sayı / Sayfa | 2013 / 10 / 1–45 | DOI | 10.1007/JHEP10(2013)167 |
| Makale Linki | https://link.springer.com/content/pdf/10.1007/JHEP10(2013)167.pdf | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| The W-boson helicity fractions in top-quark decays are measured with tt-bar events in the lepton+ jets final state, using proton-proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 fb (− 1). The measured fractions of longitudinal, left-, and right-handed helicity are F 0= 0.682±0.030 (stat.)±0.033 (syst.), FL= 0.310±0.022 (stat.)±0.022 (syst.), and FR= 0.008±0.012 (stat.)±0.014 (syst.), consistent with the standard model predictions. The measured fractions are used to probe the existence of anomalous Wtb couplings. Exclusion limits on the real components of the anomalous couplings g L, g R are also derived. |
| Anahtar Kelimeler |
| Hadron-Hadron Scattering | Top physics |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 48 |
| Scopus | 37 |
| Google Scholar | 60 |