Speaker
Milena Piotrowska
(Jan Kochanowski University)
Description
The main aim of our study is to understand some conventional and non-conventional mesons by using an effective QFT models. Starting from a single $q\bar{q}$ seed state in the Lagrangian some states appear as a dynamically generated companion poles. We show that $K_0^* (700)$ is a companion pole of the heavier $K_0^* (1430)$ resonance, $X(3872)$ emerges as a virtual companion pole of $\chi_{c1} (2P)$, and the puzzling $Y(4008)$ is not a real state but an enhancement which appears when studying the state $\psi(4040$).
Authors
Milena Piotrowska
(Jan Kochanowski University)
Prof.
Francesco Giacosa
(Kielce University)
