In detail evidence for the Electroweak (EW) production of two jets (jj) in association with
two Z bosons and constraints on anomalous quartic gauge couplings are set to be found. Data sample of proton-proton collisions at √S = 13 TeV collected with the CMS detector in 2016 - 2018 and corresponding to an integral luminosity of 137 fb^-1 was used to make above analysis. The search is performed in the fully leptonic final states ZZ → lll’ l’, where l, l’ = e, μ. The EW production of two jets in association with two Z bosons is measured with an observed (expected) significance of 4.0 (3.5) standard deviations.

Plasma crystals composed of dust particles have been used to study miniscule effects in
structure for the past few decades. A monolayer crystal is formed in an Argon plasma with a mostly uniform dispersion of melamine formaldehyde particles. A larger mass particle is inserted beneath the monolayer which causes structural deformities in the crystal. This system is observed in two circumstances: when the larger test particle is ensnared under the crystal and when the test particle interacts with the monolayer for a short time before moving away. The first case causes permanent
microcracks in the monolayer which can then be exaggerated via interrogation of the test particle with a laser. In the second case, the passing particle only causes temporary changes, and the elastic properties of the crystal are investigated.

Phys. Plasmas 26, 103701 (2019); https://doi.org/10.1063/1.5118701