Impact of CMS measurements on PDFs

\par Recently 2 analyses have been published by the CMS collaboration that study the effect of a specific CMS measurement on PDFs. A review of these studies is given here. \par The first analysis consists of a double differential inclusive jet cross-section measurement, performed on 4.7~fb$^{-1}$ of data at $\sqrt{\text{s}}=7~\text{TeV}$. Using the \textsc{HERAFitter} code, the effect of adding this measurement in the PDF fit procedure together with DIS data from HERA-I is studied. The CMS data is able to significantly reduce the uncertainties on the gluon PDF, especially for gluons with large momenta relative to the proton ($x>0.01$). A moderate reduction in the uncertainty of the u and d valence quark PDFs is also observed for $x>0.01$. \par The quark PDFs are more directly probed by gauge boson production. Therefore the second analysis studies the effect of W-boson production measurements on PFDs. This consists of a W-boson charge asymmetry measurement and a study of W-boson production in association with a c-(anti-)quark, both performed on 5.0~fb$^{-1}$ of data at $\sqrt{\text{s}}=7~\text{TeV}$. A clear reduction in the uncertainty on the u and d valence quark PDFs is seen for $x<0.1$. Furthermore the W-boson $+$ c-quark production measurements allow for the determination of an independent s quark PDF, which is not possible on DIS data alone.