Measurement of the ratio of the 3-jet to 2-jet cross sections in pp collisions at root s=7 TeV

Abstrakt

A measurement of the ratio of the inclusive 3-jet to 2-jet cross sections as a function of the total jet transverse momentum. HT, in the range 0.2 { H(T) { 2.5 TeV is presented.

The data have been collected at a proton-proton centre-of-mass energy of 7 TeV with the CMS detector at the LHC, and correspond to an integrated luminosity of 36 pb(-1). Comparisons are made between the data and the predictions of different QCD-based Monte Carlo models for multijet production.

All models considered in this study are consistent with the data for H(T) } 0.5 TeV. This measurement extends to an H(T) range that has not been explored before. (C) 2011 CERN.

Published by Elsevier B.V. All rights reserved.

Klíčová slova

• Measurement
• ratio
• 3-jet
• 2-jet
• cross
• sections
• collisions
• root
• s=7
• TeV