Measurement of four-jet production in proton-proton collisions at sqrt(s) = 7 TeV
- BELFORTE S.
- CANDELISE V.
- CASARSA M.
- COSSUTTI F.
- DELLA RICCA G.
- GOBBO B.
- LA LICATA C.
- MARONE M.
- MONTANINO D.
- PENZO A.
- SCHIZZI A.
- UMER T.
- ZANETTI A.
- ET AL (the CMS Collaboration)
DOIAbstract
Measurements of the differential cross sections for the production of exactly four jets in proton-proton collisions are presented as a function of the transverse momentum pT and pseudorapidity \u3b7, together with the correlations in azimuthal angle and the pT balance among the jets. The data sample was collected in 2010 at a center-of-mass energy of 7 TeV with the CMS detector at the LHC, with an integrated luminosity of 36\u2009\u2009pb 121. The cross section for exactly four jets, with two hard jets of pT>50\u2009\u2009GeV each, together with two jets of pT>20\u2009\u2009GeV each, within |\u3b7|<4.7 is measured to be \u3c3=330\ub15(stat.)\ub145(syst.)\u2009\u2009nb. It is found that fixed-order matrix element calculations including parto...
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