Scientific contribution by Department of Physics, Faculty of Natural Sciences and Mathematics Students

The discovery of Higgs boson in 2012 in the Large Hadron Collider (LHC) in CERN confirmed the predictions of the Standard Model (SM) of elemental particles physics. Further measurements of the properties of Higgs boson have the potential to test physics outside SM. One of the theoretical formalizations for these tests, the so-called. Higgs's pseudo-observable is proposed in the paper Eur.Phys.J. C75 (2015) 128, and accepted by CMS and ATLAS Collaborations.
In cooperation with physicists from the CMS Collaboration, students of the Department of Physics, Faculty of Natural Sciences and Mathematics Students, Senad Isaković and Nudžeim Selimović (currently at ETH Zurich) under the mentorship of Doc. Dr. Admir Greljo conducted a phenomenological study of the Higgs pseudo-observer determination in the case of the breakdown of Higgs into four leptons. The paper was recently published in the prestigious Journal of High Energy Physics JHEP 1810 (2018) 073, and among other things includes the results of the final papers of the mentioned students of our Department. The paper deals with the testing of leptons universality, useful kinematic variables, and proposes new measurement strategies.

Source: pmf.unsa.ba