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T: Fachverband Teilchenphysik
T 113: Elektroschwache Physik (Theorie) 2
T 113.2: Talk
Thursday, March 27, 2014, 17:00–17:15, P103
W+W+ production in association with two jets at the LHC — •Marina Billoni1, Stefan Dittmaier2, Patrick Motylinski3, Stefano Pozzorini4, and Frank Siegert5 — 1Universität Mainz — 2Universität Freiburg — 3University College London — 4Universität Zürich — 5TU Dresden
The same-sign di-lepton channel is not only a promising signature in the search for new physics at the Large Hadron Collider (LHC) but also it allows us to probe the quartic gauge interaction of W bosons in a high luminosity run of the LHC. Within the Standard Model the process of W+W+ production including leptonic W-decays always involves the production of two jets. This process has been investigated intensively in the last years by different groups.
In this talk we shortly review the existing theoretical predictions and compare them to our numerical results wherever possible. At leading order (LO) we investigate the full 2→ 6-process including s/t/u-channel contributions as well as the two different production channels of O(α6) and O(α4αs2) and all kind of interference effects. Our LO study comprises a detailed discussion of the impact of different selection scenarios on the relative size of various contributions. At next-to-leading order we report on QCD corrections to the QCD channel, which involves gluon exchange already at LO, as well as to the purely electroweak channel, which comprises weak vector-boson scattering.