Measurement of top quark polarisation in t-channel single top quark production
Yazarlar (1)
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Journal of High Energy Physics (Q1) | ||
| Dergi ISSN | 1029-8479 Dergi Bilgileri (2016) | ||
| Makale Dili | İngilizce | Basım Tarihi | 04-2016 |
| Cilt / Sayı / Sayfa | 2016 / 4 / 1–42 | DOI | 10.1007/JHEP04(2016)073 |
| Makale Linki | https://doi.org/10.1007/jhep04(2016)073 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| A first measurement of the top quark spin asymmetry, sensitive to the top quark polarisation, in t-channel single top quark production is presented. It is based on a sample of pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb− 1. A high-purity sample of t-channel single top quark events with an isolated muon is selected. Signal and background components are estimated using a fit to data. A differential cross section measurement, corrected for detector effects, of an angular observable sensitive to the top quark polarisation is performed. The differential distribution is used to extract a top quark spin asymmetry of 0.26±0.03 (stat)±0.10 (syst), which is compatible with a p-value of 4.6% with the standard model prediction of 0.44. |
| Anahtar Kelimeler |
| Hadron-Hadron scattering (experiments) | Top physics |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 26 |
| Scopus | 31 |
| Google Scholar | 119 |