NLO forward-backward charge asymmetries in p p (p bar p) -> l- l+ jet production at large hadron colliders

Details NLO forward-backward charge asymmetries in p p (p bar p) -> l- l+ jet production at large hadron colliders NLO forward-backward charge asymmetries in p p (p bar p) -> l- l+ jet production at large hadron colliders

2005-07-22

arxiv.org/abs/hep-ph/0507262v2

Phys.Lett. B628 (2005) 40-48

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, version to appear in Physics Letters B

Scientific paper

10.1016/j.physletb.2005.09.034

We consider the next-to-leading order corrections, O(alpha_s), to forward-backward charge asymmetries for lepton-pair production in association with a large transverse momentum jet at large hadron colliders. We find that the leading order results are essentially confirmed. Although experimentally challenging and in practice with large backgrounds, these observables could provide a new determination of the weak mixing angle sin2 theta^lept_eff (M_Z^2) with a statistical precision for each lepton flavour of ~10^(-3) (7 x 10^{-3}) at LHC (Tevatron), and if b jets are identified, of the b quark Z asymmetry A^b_{FB} with a statistical precision of ~ 2x10^{-3} (4x10{-2}) at LHC (Tevatron).

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