Measurement of color coherence effects in pp collisions at root s = 7 TeV

A study of color coherence effects in pp collisions at a center-of-mass energy of 7 TeV has been performed. The data used in the analysis were collected in 2010 by the CMS detector at the LHC and correspond to an integrated luminosity of $36$ ${\rm{pb}}^{-1}$. Events are selected in which there are at least three jets with the two leading jets in transverse momentum having a pronounced back-to-back topology. The measurement of the azimuthal angular correlation between the second and third jets is compared to the predictions of Monte-Carlo models with different implementations of color coherence effects.