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T: Fachverband Teilchenphysik

T 38: Standard model 1 (electroweak/bosons)

T 38.8: Vortrag

Dienstag, 5. März 2024, 17:45–18:00, Geb. 30.23: 2/0

Measurement of the electroweak production of a W boson accompanied by two jets with the ATLAS experiment — •Lisa Marie Baltes — Kirchhoff-Institute for Physics, University Heidelberg, Germany

The observation and measurement of electroweak gauge boson self-interaction provides an indirect search for physics beyond the Standard Model. The electroweak production of a W boson in association with two jets includes the vector-boson-fusion (VBF) production of a W boson and is thus sensitive to the triple gauge boson vertices WWγ and WWZ. In proton-proton collisions, the characteristic signature of VBF includes two high-momentum jets at small angles with respect to the incoming beams and a centrally produced lepton-neutrino pair originating from the W boson decay. This unique signature provides kinematic discrimination from backgrounds such as strongly produced jets associated with a W boson, tt and dijet. In this talk, the current status of the electroweak Wjj analysis including event selection and background estimation is presented.