Particle and Nuclear Physics

Particle and Nuclear Physics

The research focuses on experimental and theoretical study of elementary particles and atomic nuclei with the goal to contribute to the detailed tests of the standard model (SM) of fundamental interactions, to search for physical phenomena beyond the SM, and improve the present knowledge of the nuclear structure and nucleon interactions.

Theoretical and Experimental Particle Physics

Research in theoretical particle physics concentrates mainly on an adequate description of the Higgs sector of the electroweak theory, possible phenomena beyond the SM, the study of low energy meson interactions, a deeper study of some specific mathematical methods of quantum field theory. Research in experimental particle physics is performed within the framework of the world leading accelerator experiments with an emphasis on the exploitation of the full potential of the Czech Republic’s membership in CERN. These experiments are: ATLAS at CERN (study of the properties of the Higgs boson and the top quark; B physics; heavy ion interactions; diffraction physics), NA62 at CERN (investigation of the CP violation and of rare decays of K mesons), Belle and SuperBelle at KEK (study of rare decays of bottomonium and of CP violation). Important parts of the research are neutrino physics (Daya Bay, NOvA and SuperNEMO experiments) and astroparticle physics (experiment AUGER). Research activities are oriented also on the development, production and testing of components of detector complexes.

Theoretical and Experimental Nuclear Physics

Research in the physics of atomic nuclei and related strongly interacting many‑body systems is aimed at the following areas:

(i) Experimental study of nuclear properties at high excitation energies. Subjects of investigation are various statistical features of excited nuclear states and their decays. We participate in the measurement of cross sections of the neutron‑induced reactions in experiment n_TOF at CERN.

(ii) Microscopic theory of collective nuclear dynamics. The research include calculations based on realistic two‑nucleon potentials as well as related phenomenological functional approaches.

(iii) Theory of quantum phase transitions and chaos in algebraic models of nuclei and similar systems. Here we focus on approximate conservation of dynamical symmetries and the onset of chaos, and on an analysis of various singularities in quantum spectra.

Selected outputs

  • ATLAS Coll. (G. Aad et al.): Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716, 1-29 (2012).

  • K. Kampf, J. Novotný: Resonance saturation in the odd-intrinsic parity sector of low-energy QCD. Phys. Rev. D 84, 014036 (2011).

  • P. Cejnar, J. Jolie, and R.F. Casten: Quantum phase transitions in the shapes of atomic nuclei. Reviews of Modern Physics 82, 2155-2212 (2010).

  • C. Lederer et al. (n_TOF Collaboration): Neutron Capture Cross Section of Unstable 63Ni: Implications for Stellar Nucleosynthesis. Physical Review Letters 110 (2013) 022501.

Last change: December 15, 2015 10:57 
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