Weak corrections and high $E_T$ jets at Tevatron

Details Weak corrections and high $E_T$ jets at Tevatron Weak corrections and high $E_T$ jets at Tevatron

2005-03-16

arxiv.org/abs/hep-ph/0503152v3

Phys.Rev.D74:097301,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures, no significant changes from v2, version to appear in PRD

Scientific paper

10.1103/PhysRevD.74.097301

We calculate one-loop (purely) Weak (W) corrections of ${\cal O}(\alpha_{\mathrm{S}}^2\alpha_{\mathrm{W}})$ to the partonic cross section of two jets at Tevatron and prove that they can be larger than the tree-level ${\cal O}(\alpha_{\mathrm{S}}\alpha_{\mathrm{EW}})$ and ${\cal O}(\alpha_{\mathrm{EW}}^2)$ Electro-Weak (EW) ones. At high transverse energy of the jets, all such corrections may lead to detectable effects of, e.g., -10% or so, with respect to the leading-order (LO) QCD term of ${\cal O}(\alpha_{\mathrm{S}}^2)$, for the highest value so far probed by Run 2, depending on the factorisation/renormalisation scale. Besides, they increase significantly with jet transverse energy. Hence, our results show that EW corrections may be needed to fit the Standard Model (SM) to present and future Tevatron jet data.

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