Forward jets and forward-central jets at CMS

We report on a measurement of the cross section of inclusive forward jets in pp collisions at $\sqrt{s}$~=~7~TeV, based on a data sample collected in 2010 and corresponding to an integrated luminosity of 3.14 pb$^{-1}$. Jets are reconstructed with the anti-kT (R = 0.5) algorithm in the Hadronic Forward (HF) calorimeter at pseudorapidities 3.2$<\vert\eta\vert<$4.7, in the transverse momentum range p$_T$ = 35-140 GeV/c. The single differential cross section as function of the jet transverse momentum is presented and compared to next-to-leading order perturbative QCD calculations, PYTHIA and HERWIG parton shower event generators, as well as to the CASCADE Monte Carlo. In addition, a measurement is presented of dijet production with one jet in the forward region (3.2$<\vert\eta\vert<$4.7) and one jet in the central region ($\vert\eta\vert<$2.8). Differential cross sections are obtained as function of the transverse momentum of the jets. The measurements are compared to perturbative QCD calculations, PYTHIA and HERWIG parton shower event generators, as well as by the CASCADE Monte Carlo.