Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at sqrt (s)= 7 TeV and first determination of the strong …
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale)
Dergi Adı arXiv preprint arXiv:1304.7498
Makale Dili – Basım Tarihi 04-2013
Makale Linki https://arxiv.org/abs/1304.7498
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
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, , 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 inverse femtobarns. The strong coupling constant at the scale of the Z boson mass is determined to be alphaS[MZ] = 0.1148 +/- 0.0014 (exp.) +/- 0.0018 (PDF) +/- 0.0050 (theory), by comparing the ratio in the range 0.42 < < 1.39 TeV to the predictions of perturbative QCD at next-to-leading order. This is the first determination of alphaS[MZ] 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.
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Pdf İndir
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
Google Scholar 249

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  • Gaziosmanpaşa Üniversitesi, Taşlıçiftlik Yerleşkesi, 60250 Merkez / Tokat
  • unis@gop.edu.tr 3562521616
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