$W/Z +$jet(s) production in pp collisions at $sqrt{s} = 7$ TeV

摘要

The measurements of the cross-sections are presented for the production of jets in association with e?‘? and e?‘? bosons reconstructed in their decays to electrons and muons. The results are based on 36 pb-1 of e?‘?e?‘? collisions at $sqrt{s} = 7$ TeV collected by the CMS Collaboration. Jets are reconstructed with the CMS particle flow algorithm and must pass a transverse momentum threshold of 30 GeV. The study presents the ratios $e??? (V + a‰￥ n-{ ext{jet}})/e??? (V)$ and $e??? (V + a‰￥ n-{ ext{jet}})/e???(V + a‰￥ (n - 1)-{ ext{jet}}).$ The comparison between the data and the Monte Carlo prediction is also showed.