par Khachatryan, Vardan;Caillol, Cécile
;Clerbaux, Barbara
;De Lentdecker, Gilles
;Dobur, Didar
;Favart, Laurent
;Gay, Arnaud
;Grebenyuk, Anastasia
;Leonard, Alexandre
;Mohammadi, Abdollah
;Pernie, Luca
;Reis, Thomas
;Seva, Tomislav
;Thomas, Laurent
;Vander Velde, Catherine
;Vanlaer, Pascal
;Wang, Jian
;Zenoni, Florian
; [et al.]
Référence European Physical Journal C. Particles and Fields, 75, 5, page (1-24)
Publication Publié, 2015-05

















Référence European Physical Journal C. Particles and Fields, 75, 5, page (1-24)
Publication Publié, 2015-05
Article révisé par les pairs
Résumé : | This paper presents a measurement of the inclusive 3-jet production differential cross section at a proton–proton centre-of-mass energy of 7 TeV using data corresponding to an integrated luminosity of 5$$,mathrm{fb}^{-1}$$fb-1collected with the CMS detector. The analysis is based on the three jets with the highest transverse momenta. The cross section is measured as a function of the invariant mass of the three jets in a range of 445–3270 GeV and in two bins of the maximum rapidity of the jets up to a value of 2. A comparison between the measurement and the prediction from perturbative QCD at next-to-leading order is performed. Within uncertainties, data and theory are in agreement. The sensitivity of the observable to the strong coupling constant $$alpha _mathrm {S}$$αS is studied. A fit to all data points with 3-jet masses larger than 664 GeV gives a value of the strong coupling constant of $$alpha _S(M_mathrm{Z}) = 0.1171 pm 0.0013, ext {(exp)} ,^{+0.0073}_{-0.0047}, ext {(theo)} $$αS(MZ)=0.1171±0.0013(exp)-0.0047+0.0073(theo). |