/ hep-ex CMS-FSQ-12-035

Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}$= 8 TeV

Pages: 49

Abstract: The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton-proton collisions at $\sqrt{s}=8~\mathrm{TeV}$, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of $19.7~\mathrm{fb}^{-1}$. The electroweak cross section for the $\ell \ell \mathrm{jj}$ final state (with $\ell$ = e or $\mu$ and $\mathrm{j}$ representing the quarks produced in the hard interaction) in the kinematic region defined by $M_{\ell\ell}$ > $50~\mathrm{GeV}$, $M_\mathrm{jj}$ > $120~\mathrm{GeV}$, transverse momentum $p_{\mathrm{Tj}}$ > $25~\mathrm{GeV}$, and pseudorapidity $|\eta_\mathrm{j}|$ < $5$, is found to be $\sigma_\mathrm{EW}(\ell\ell \mathrm{jj}) =174 \pm 15~\mathrm{(stat)} \pm 40~\mathrm{(syst)}~\mathrm{fb}$, in agreement with the standard model prediction.The associated jet activity of the selected events is studied, in particular in a signal-enriched region of phase space, and the measurements are found to be in agreement with QCD predictions.

Note: Submitted to Eur. Phys. J. C

Total numbers of views: 2432
Numbers of unique views: 762
Запись создана 2014-11-05, последняя модификация 2014-11-05

Внешние ссылки:
Полный текст
Оценить этот документ:

1
2
3

(Еще не рецензированная)