4.4 Article

Parton distribution function dependence of benchmark Standard Model total cross sections at the 7 TeV LHC

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JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 9, 页码 -

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SPRINGER
DOI: 10.1007/JHEP09(2011)069

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Hadronic Colliders; Standard Model; Deep Inelastic Scattering; Parton Model

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We compare predictions for the W, Z, gg -> H and t (t) over bar total cross sections at the Large Hadron Collider (LHC), for a centre-of-mass energy of 7 TeV, using the most recent publicly available next-to-leading order and next-to-next-to-leading order parton distribution functions (PDFs) from all PDF fitting groups. In particular, we focus on the dependence on the different values of the strong coupling, alpha(S)(M-Z(2)), used by each group. We also perform a comparison of the relevant quark-antiquark and gluon-gluon luminosity functions. We make some comments on the recent PDF4LHC recommendations. Finally, we discuss the comparison of data and theory for W and Z cross sections at the LHC.

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