Nacionalni portal odprte znanosti

Standardni model, kot teorija osnovnih interakcij, izjemno dobro opisuje elektromagnetne, šibke in močne interakcije osnovnih delcev. Kljub uspešnosti obstajajo pomanjkljivosti teorije, kot sta opis nevtrinskih mas in izvor temne snovi. Ni jasno, zakaj v naravi nastopajo ravno tri generacije fermion ...

In the past two decades, experiments have revealed a rich hadronic spectrum, including exotic states that cannot be easily explained by the quark model. Studying these states requires non-perturbative methods. In this thesis, we employ lattice QCD, the only reliable first-principles approach for exa ...

Many exotic charmoniumlike mesons have already been discovered experimentally, of which the $Z_c$ mesons with isospin 1 are prominent examples. We investigate $J^{PC}=1^{+\pm}$ states with flavor $\bar{c}c\bar{q}q (q=u,d)$ in isospin 1 using lattice QCD. This is the first study of these mesons emplo ...