Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at √s = 7 TeV and first determination of the strong coupling constant in the TeV range
Yazarlar (1)
Prof. Dr. Hasan OĞUL
Makale Türü Açık Erişim Diğer (Teknik, not, yorum, vaka takdimi, editöre mektup, özet, kitap krıtiği, araştırma notu, bilirkişi raporu ve benzeri) (SCI, SSCI, AHCI, SCI-Exp dergilerinde yayınlanan teknik not, editöre mektup, tartışma, vaka takdimi ve özet türünden makale)
Dergi Adı European Physical Journal C (Q1)
Dergi ISSN 1434-6044 Dergi Bilgileri (2013)
Makale Dili İngilizce Basım Tarihi 01-2013
Kabul Tarihi – Yayınlanma Tarihi 01-10-2013
Cilt / Sayı / Sayfa 73 / 10 / 1–21 DOI 10.1140/epjc/s10052-013-2604-6
Makale Linki https://link.springer.com/content/pdf/10.1140/epjc/s10052-013-2604-6.pdf
UAK Araştırma Alanları
Nükleer Fizik
Özet
A measurement is presented of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section as a function of the average transverse momentum, 〈pT1,2〉, of the two leading jets in the event. The data sample was collected during 2011 at a proton-proton centre-of-mass energy of 7 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 5.0 fb-1. The strong coupling constant at the scale of the Z boson mass is determined to be αS(MZ)=0.1148±0.0014 (exp.)±0.0018 (PDF)±0.0050(theory), by comparing the ratio in the range 0.42 < 〈pT1,2〉 < 1.39 TeV to the predictions of perturbative QCD at next-to-leading order. This is the first determination of αS(M Z) from measurements at momentum scales beyond 0.6 TeV. The predicted ratio depends only indirectly on the evolution of the parton distribution functions of the proton such that this measurement also serves as a test of the evolution of the strong coupling constant. No deviation from the expected behaviour is observed. © 2013 CERN for the benefit of the CMS collaboration.
Anahtar Kelimeler
Pdf İndir
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at √s = 7 TeV and first determination of the strong coupling constant in the TeV range

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