Pseudorapidity distributions of charged hadrons in minimum-bias p-p collisions at sqrt(s)=14 TeV

The measurement of the charged hadron pseudorapidity distributions in minimum-bias p-p collisions, using the tracker barrel layers of the CMS detector, is presented. This measurement can provide an independent measurement of charged particle production in p-p collisions at the new energy frontier. Charged hadrons with transverse momenta larger than $30$ MeV/{\it c} can be detected in the first pixel layer. Its fine grained segmentation and correspondingly small occupancies allows for the measurement of the pseudorapidity distribution of charged hadrons by counting the number of reconstructed hits, after appropriate corrections. The analysis method is discussed in the context of fully simulated and reconstructed p-p collisions.