scholarly journals Vector boson scattering, triple gauge-boson production (including Zgg) and limits on anomalous quartic gauge couplings with the ATLAS detector

2017 ◽  
Author(s):  
Hulin Wang ◽  
Keyword(s):  
Gauge Boson ◽  
Vector Boson ◽  
Atlas Detector ◽  
Boson Production ◽  
Gauge Couplings ◽  
Vector Boson Scattering

scholarly journals Observation of ZZ production via Vector Boson Scattering in ATLAS

2021 ◽  
Vol 2105 (1) ◽  
pp. 012013
Author(s):  
Ioannis Maznas
Keyword(s):  
Cross Sections ◽  
Vector Boson ◽  
Statistical Significance ◽  
Signal Strength ◽  
Atlas Detector ◽  
Pp Collisions ◽  
Final State ◽  
Measurement Results ◽  
Vector Boson Scattering

Abstract This document presents measurement results of the ZZ production via Vector Boson Scattering interactions in 139fb −1 of data recorded by the ATLAS detector from pp collisions at s = 13 TeV during LHC Run-II (2015-2018). In this study, 127 candidate events with a fully leptonic final state (ℓℓℓℓjj) have been observed and another 82 events for ℓℓvvjj final state, with a contribution of the purely electroweak ZZjj process estimated to be 20.6 ± 2.5 and 12.3 ± 0.7 events respectively. The measured cross sections were found to be 1.27 ± 0.14fb (1.22 ± 0.35fb) for ℓℓℓℓjj (ℓℓvvjj) in their respective fiducial regions. Using multivariant methods, the EW production of ZZjj events (combining the ℓℓℓℓjj and ℓℓvvjj channels) was measured to have a signal strength of 1.35± 0.34, which leads to a rejection of the no-electroweak hypothesis with a statistical significance of 5.5σ.

scholarly journals TWO- AND THREE-VECTOR-BOSON PRODUCTION IN e+e- COLLISIONS WITHIN THE BESS MODEL

1994 ◽  
Vol 09 (30) ◽  
pp. 5313-5358 ◽  
Author(s):  
G. CVETIČ ◽  
C. GROSSE-KNETTER ◽  
R. KÖGERLER
Keyword(s):  
Gauge Boson ◽  
Cross Sections ◽  
Linear Collider ◽  
Empirical Test ◽  
Vector Boson ◽  
Electroweak Interaction ◽  
Boson Production ◽  
Loop Order ◽  
The Standard Model ◽  
The One

The BESS model is the Higgsless alternative to the standard model of electroweak interaction with nonlinear realized spontaneous symmetry breaking. Since it is nonrenormalizable, new couplings (not existing in the SM) are induced at each loop order. On the basis of the one-loop induced gauge boson self-couplings we calculated the cross sections for the two- and three-gauge-boson production processes in e+e- collisions. Measurements of these cross sections in a planned e+e- linear collider at [Formula: see text] (NLC) will supply a good empirical test of the gauge boson self-interactions and thus should enable us to discriminate between the SM and the BESS model.

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