par Chatrchyan, Serguei;Clerbaux, Barbara 
;De Lentdecker, Gilles ;Favart, Laurent ;Marage, Pierre ;Vander Velde, Catherine ;Vanlaer, Pascal ;Gay, Arnaud ;Hreus, Tomas ;Mohammadi, Abdollah ;Seva, Tomislav ;Caillol, Cécile ;Leonard, Alexandre ;Pernie, Luca ;Reis, Thomas ;Thomas, Laurent ; [et al.]
Référence Physics letters. Section B, 728, 1, page (496-517)
Publication Publié, 2014
;De Lentdecker, Gilles ;Favart, Laurent ;Marage, Pierre ;Vander Velde, Catherine ;Vanlaer, Pascal ;Gay, Arnaud ;Hreus, Tomas ;Mohammadi, Abdollah ;Seva, Tomislav ;Caillol, Cécile ;Leonard, Alexandre ;Pernie, Luca ;Reis, Thomas ;Thomas, Laurent ; [et al.]Référence Physics letters. Section B, 728, 1, page (496-517)
Publication Publié, 2014
Article révisé par les pairs
| Résumé : | The inclusive cross section for top-quark pair production measured by the CMS experiment in proton–proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, mt pole, or the strong coupling constant, αS. With the parton distribution function set NNPDF2.3, a pole mass of 176.7−3.4 +3.8 GeV is obtained when constraining αS at the scale of the Z boson mass, mZ, to the current world average. Alternatively, by constraining mt pole to the latest average from direct mass measurements, a value of αS(mZ)=0.1151−0.0032 +0.0033 is extracted. This is the first determination of αS using events from top-quark production. |
