Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-02-25
Eur.Phys.J.C51:607-617,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 4 figures
Scientific paper
10.1140/epjc/s10052-007-0321-8
In this paper we propose a strategy for measuring the inclusive W-boson production processes at LHC. This strategy exploits simultaneously the unique flexibility of the LHC collider in running variable beam particle species at variable beam energies, and the configuration flexibility of the LHC detectors. We propose their concrete settings for a precision measurement of the Standard Model parameters. These dedicated settings optimise the use of the Z boson and Drell-Yan pair production processes as ``the standard reference candles''. The presented strategy allows to factorise and to directly measure those of the QCD effects which affect differently the W and Z production processes. It reduces to a level of 10^{-4} the impact of uncertainties in the partonic distribution functions (PDFs) and in the transverse momentum of the quarks on the measurement precision. Last but not the least, it reduces by a factor of 10 an impact of systematic measurement errors, such as the energy scale and the measurement resolution, on the W-boson production observables.
Fayette Florent
Krasny Mieczyslaw Witold
Placzek Wieslaw
Siodmok Andrzej
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