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Weak corrections and high $E_T$ jets at Tevatron | | S. Moretti
; M.R. Nolten
; D.A. Ross
; | | Date: |
16 Mar 2005 | | Subject: | hep-ph | | Affiliation: | Southampton University | | Abstract: | We calculate one-loop weak corrections via the order $alpha_{mathrm{S}}^2alpha_{mathrm{W}}$ to the partonic cross section of two jets at Tevatron and prove that they can be large. At high transverse energy of the jets they lead to detectable effects, e.g., up to -20% in the region were CDF had found in Run 1 data an apparent excess with respect to theory predictions for inclusive jet production through next-to-leading order (NLO) QCD. While the latter may be explained by an appropriate re-parameterisation of the gluon Parton Distribution Functions (PDFs) at medium/large Bjorken $x$, our results show that, after ${cal O}(alpha_{mathrm{S}}^2alpha_{mathrm{W}})$ effects are taken into account, current PDF sets may no longer be appropriate to fit Tevatron data. As an example, for the current highest $E_T$ reach at Run 2, ${cal O}(alpha_{mathrm{S}}^2alpha_{mathrm{W}})$ effects can be as large as -30%. | | Source: | arXiv, hep-ph/0503152 | | Services: | Forum | Review | PDF | Favorites | |
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