Mainz 2014 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 113: Elektroschwache Physik (Theorie) 2

T 113.1: Vortrag

Donnerstag, 27. März 2014, 16:45–17:00, P103

W+W production at high transverse momenta beyond NLO — •Michael Rauch1, Francisco Campanario2, and Sebastian Sapeta31Inst. f. Theoretical Physics, Karlsruhe Institute of Technology (KIT) — 2Theory Division, IFIC, University of Valencia-CSIC — 3Institute for Particle Physics Phenomenology, Durham University

Pair production of W gauge bosons is an important process at the LHC. It enters many experimental measurements, both as a background, for example in new-physics searches or the determination of Higgs properties, but also as a signal process in precision studies and tests of the Standard Model. Therefore, accurate predictions for this process are necessary to exploit the full potential of the LHC.

Using the LoopSim method, we combine NLO QCD results for WW and WW+jet as well as the loop-squared gluon-fusion contribution. These are generated with VBFNLO and include leptonic decays of the W bosons with finite-width and off-shell effects.

We find that the size of the additional corrections beyond NLO can be significant and well outside of the NLO error bands given by renormalization and factorization scale variation. Applying a jet veto, we observe further negative corrections, which we relate to the presence of large Sudakov logarithms.

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