Precision predictions for Z'-production at the CERN LHC: QCD matrix elements, parton showers, and joint resummation

Simple item page
dc.creatorFuks, B.
dc.creatorKlasen, M.
dc.creatorLedroit, F.
dc.creatorLi, Q.
dc.creatorMorel, J.
dc.date2007-11-05
dc.date2008-01-15
dc.date.accessioned2026-07-07T11:12:55Z
dc.date.available2026-07-07T11:12:55Z
dc.descriptionWe improve the theoretical predictions for the production of extra neutral gauge bosons at hadron colliders by implementing the Z' bosons in the MC@NLO generator and by computing their differential and total cross sections in joint p_T and threshold resummation. The two improved predictions are found to be in excellent agreement with each other for mass spectra, p_T spectra, and total cross sections, while the PYTHIA parton and ``power'' shower predictions usually employed for experimental analyses show significant shortcomings both in normalization and shape. The theoretical uncertainties from scale and parton density variations and non-perturbative effects are found to be 9%, 8%, and less than 5%, respectively, and thus under good control. The implementation of our improved predictions in terms of the new MC@NLO generator or resummed K factors in the analysis chains of the Tevatron and LHC experiments should be straightforward and lead to more precise determinations or limits of the Z' boson masses and/or couplings.
dc.description14 pages, 7 figures, version to appear in Nucl. Phys. B
dc.identifierhttps://arxiv.org/abs/0711.0749
dc.identifierhttp://arxiv.org/abs/0711.0749
dc.identifierNucl.Phys.B797:322-339,2008
dc.identifierdoi:10.1016/j.nuclphysb.2008.01.017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191546
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titlePrecision predictions for Z'-production at the CERN LHC: QCD matrix elements, parton showers, and joint resummation
dc.typetext

Files

Collections

arXiv