Impact of CMS silicon tracker misalignment on track and vertex reconstruction

摘要: The alignment uncertainties of the CMS tracker detector, made a huge amount independent silicon sensors with an excellent position resolution, affect performances track reconstruction, parameters measurement and vertex reconstruction. In order to study impact misalignment tracking devices on previous procedures, realistic estimates for expected displacements systems are supplied in two different scenarios, first supposed reproduce conditions during data taking while second one related long-term condition. Results reconstruction expressed terms resolution parameters, global efficiency fake rate scenarios misalignment, by comparing them scenario perfect devices. Primary finding affected too.