Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at √s=7 TeV
Yazarlar (1)
Makale Türü Açık Erişim Özgün Makale (ESCI dergilerinde yayınlanan tam makale)
Dergi Adı Journal of High Energy Physics
Dergi ISSN 1126-6708
Makale Dili İngilizce Basım Tarihi 10-2013
Cilt / Sayı / Sayfa 2013 / 10 / 1–43 DOI 10.1007/JHEP10(2013)062
Makale Linki https://link.springer.com/content/pdf/10.1007/JHEP10(2013)062.pdf
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
The first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity of 5 fb− 1. The cross section is measured for the ℓℓjj (ℓ= e, μ) final state in the kinematic region m ℓℓ> 50 GeV, m jj> 120 GeV, transverse momenta GeV and pseudorapidity| η j|< 4. 0. The measurement, combining the muon and electron channels, yields σ= 154±24 (stat.)±46 (exp. syst.)±27 (th. syst.)±3 (lum.) fb, in agreement with the theoretical cross section. The hadronic activity, in the rapidity interval between the jets, is also measured. These results establish an important foundation for the more general study of vector boson fusion processes, of relevance for Higgs boson searches and for measurements of electroweak gauge couplings and vector boson scattering.
Anahtar Kelimeler
Hadron-Hadron scattering