partphys

First beam splashes delivered by the LHC accelerator at CERN were observed by the two major experiments ATLAS and CMS. After almost two years of shutdown filled by accelerator and detectors upgrades, a new Run 3 of the LHC commences.

Dr. Dušan Mandát from the Joint Laboratory of Optics visited in the past days together with his colleagues from FZU Dr. J. Vícha and Ing. A. Bakalová Arequipa in Peru, the candidate site for building of the future Southern Wide-field Gamma-ray Observatory (SWGO).

Within the collaboration with the ATLAS experiment located in the laboratory CERN, Jiří Kvita from the Joint Laboratory of Optics served as the internal Editorial Board chair supervising and completing the publication of the analysis of a process where, in proton-proton collisions at the LHC collider, pairs of heavies particles, top quarks, are produced in association with another pair of heavy quarks of type b (dubbed beauty, bottom), denoted as ttbb product

The observation of associated production of the top quark pair and the Higgs Boson is a process where direct interaction of these two heaviest particles of the Standard model of elementary particles comes into play. The production of the Higgs boson is accompanied with the top quark pair creation only in about 1% of events and for the observation of this process data from several decay channels have been combined.