Abstract
Recent measurements and searches in the electroweak sector of the Standard Model by the ATLAS experiment at the LHC are reported. The results are based on 20.3 fb−1 of proton-proton collisions at s=8 TeV for WW, WZ, ZZ, Zγ and Zγγ production as well as on 3.2 fb−1 of proton-proton collisions at s=13 TeV for WZ and ZZ production.
Highlights
A precise measurement of the electroweak processes is very important to test the Standard Model
Recent electroweak results on diboson√and triboson production in proton-proton collisions at s = 8 TeV based on 20.3 fb−1 of data recorded by the ATLAS detector
Limits o√n anomalous quartic gauge couplings at s = 8 TeV have been set using the fiducial cross section measured in an optimized aQGC phase space which is defined by the Vector boson scattering (VBS) phase space that requires |∆φ(W, Z)| > 2 and the scalar sum Σ|plT| of the transverse momenta of the three charged leptons associated with the W and Z bosons to be greater than 250 GeV
Summary
A precise measurement of the electroweak processes is very important to test the Standard Model. W boson pairs can be produced via quark antiquark annihilation or gluon gluon fusion. √ Table 1: Measured fiducial WW cross section at s = 8 TeV and L = 20.3 fb−1 for each channel. Differential cross section measurements have been performed as function of the leading lepton pT. Pairs of a W and a Z boson are produced in quark antiquark annihilation, where a contribution from the WWZ triple gauge coupling is included.
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