Determination of the strong coupling constant αS(mZ) from measurements of inclusive W± and Z boson production cross sections in proton-proton collisions at √s=7 and 8 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 | 06-2020 |
| Cilt / Sayı / Sayfa | 2020 / 6 / – | DOI | 10.1007/JHEP06(2020)018 |
| Makale Linki | https://hdl.handle.net/11384/149529 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| Twelve measurements of inclusive cross sections of W±and Z boson production, performed in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, are compared with perturbative quantum chromodynamics calculations at next-to-next-to-leading order (NNLO) accuracy obtained with the CT14, HERAPDF2. 0, MMHT14, and NNPDF3. 0 parton distribution functions (PDFs). Data and theory agree well for all PDF sets, taking into account the experimental and theoretical uncertainties. A novel procedure is employed to extract the strong coupling constant at the Z pole mass from a detailed comparison of all the experimental fiducial cross sections to the corresponding NNLO theoretical predictions, yielding αS (mZ)= 0.1163+ 0.0024− 0.0031 (CT14), 0.1072+ 0.0043− 0.0040 (HERAPDF2. 0), 0.1186±0.0025 (MMHT14), and 0.1147±0.0023 (NNPDF3. 0). Using the results obtained with the CT14 and MMHT14 PDFs, which yield the most robust and stable αS (mZ) extractions, a value αS (mZ)= 0.1175+ 0.0025− 0.0028 is determined. |
| Anahtar Kelimeler |
| Hadron-Hadron scattering (experiments) | Particle and resonance production |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 12 |
| Scopus | 11 |