Evaluation of the Theoretical Uncertainties in the Z to ll Cross Sections at the LHC

Abstract

We study the sources of systematic errors in the measurement of the Z to ll cross-sections at the LHC. We consider the systematic errors in both the total cross-section and acceptance for anticipated experimental cuts. We include the best available analysis of QCD effects at NNLO in assessing the effect of higher order corrections and PDF and scale uncertainties on the theoretical acceptance. In addition, we evaluate the error due to missing NLO electroweak corrections and propose which MC generators and computational schemes should be implemented to best simulate the events.

23 pages, 52 eps figures, LaTeX with JHEP3.cls, epsfig. Added a reference, acknowledgment, and a few clarifying comments. 4/29: Changes in references, minor rewordings and misprint corrections, and one new table (Table 4) comparing CTEQ and MRST PDFs in the NNLO calculation. Version 6 adds email addresses and corrects one reference

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Cited by in corpus (21)

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• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• An Automated Implementation of On-Shell Methods for One-Loop Amplitudes
• Universal Interface of TAUOLA Technical and Physics Documentation
• Neutral current Drell-Yan with combined QCD and electroweak corrections in the POWHEG BOX
• Combination of electroweak and QCD corrections to single W production at the Fermilab Tevatron and the CERN LHC
• QCD$\oplus$QED NNLO corrections to Drell Yan production
• Parton distribution function dependence of benchmark Standard Model total cross sections at the 7 TeV LHC
• Parton Shower Uncertainties with Herwig 7: Benchmarks at Leading Order
• Precision Measurement of the W-Boson Mass: Theoretical Contributions and Uncertainties
• Mixed QCD$\otimes$QED corrections to exclusive Drell Yan production using the $q_T$-subtraction method
• Susy Theories and QCD: Numerical Approaches
• Exploring Drell-Yan signals from the 4D Composite Higgs Model at the LHC
• Evaluation of the Theoretical Uncertainties in the W to Lepton and Neutrino Cross Sections at the LHC
• $\mathcal{KK}\text{MC-hh}$: Resummed Exact $\mathcal{O}({\alpha }^{2}L)$ EW Corrections in a Hadronic MC Event Generator
• New Approach to Parton Shower MC's for Precision QCD Theory: HERWIRI1.0(31)
• HERWIRI1.0: MC Realization of IR-Improved DGLAP-CS Parton Showers
• Theoretical Uncertainties in Electroweak Boson Production Cross Sections at 7, 10, and 14 TeV at the LHC
• Collider phenomenology of the 4D~composite Higgs model
• HERWIRI2: CEEX Electroweak Corrections in a Hadronic MC
• Software for physics of tau lepton decay in LHC experiments