W, Z and PDFs measurements with early data in ATLAS and CMS

摘要

The start of the LHC will provide the unprecedented opportunity to explore physics beyond the TeV energy scale. During the start-up phase it will be crucial to make best use of early data of O(100 pb~(-1)) to calibrate and understand the detectors and to perform first physics measurements. The use of W and Z processes as "standard candles" is described in this paper, together with first analyses of inclusive cross-sections and prospects for parton density functions measurements at LHC. The experimental performances are introduced by a theoretical review of calculations for W and Z production.