Combinations of single-top-quark production cross-section measurements and fLVVtb determinations at s \sqrt{s} = 7 and 8 TeV with the ATLAS and CMS experiments
Yazarlar (7)
Prof. Dr. Salim Çerçi Adıyaman Üniversitesi, Türkiye
Doç. Dr. Özlem Kaya Kafkas Üniversitesi, Türkiye
Prof. Dr. Mithat Kaya Marmara Üniversitesi, Türkiye
Prof. Dr. Aysel Kayış Topaksu Çukurova Üniversitesi, Türkiye
Suat Özkorucuklu İstanbul Üniversitesi, Türkiye
Dr. Öğr. Üyesi Sevgi TEKTEN AKTAŞ Kafkas Üniversitesi, Türkiye
Prof. Dr. Elif Aslı Yetkin İstanbul Bilgi Üniversitesi, Türkiye
| 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 (2019) | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 05-2019 |
| Kabul Tarihi | 29-04-2019 | Yayınlanma Tarihi | 01-05-2019 |
| Cilt / Sayı / Sayfa | 2019 / 5 / – | DOI | 10.1007/JHEP05(2019)088 |
| Makale Linki | http://link.springer.com/10.1007/JHEP05(2019)088 | ||
| UAK Araştırma Alanları |
Fizik
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| Özet |
| Abstract This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at $$ \sqrt{s} $$ s = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb−1 at $$ \sqrt{s} $$ s = 7 TeV and 12.2 to 20.3 fb−1 at $$ \sqrt{s} $$ s = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: t-channel, tW, and s-channel. The combined t-channel cross-sections are 67.5 ± 5.7 pb and 87.7 ± 5.8 pb at $$ \sqrt{s} $$ s = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 ± 4.1 pb and 23.1 ± 3.6 pb at $$ \sqrt{s} $$ s = 7 and 8 TeV respectively. For the s-channel cross-section, the combination yields 4.9 ± 1.4 pb at $$ \sqrt{s} $$ s = 8 TeV. The square of the magnitude of the CKM matrix element V tb multiplied by a form factor f LV is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation |V td |, |V ts | ≪ |V tb |. All the |f LV V tb |2 determinations, extracted from individual ratios at $$ \sqrt{s} $$ s = 7 and 8 TeV, are combined, resulting in |f LV V tb | = 1.02 ± 0.04 (meas.) ± 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
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