30 January 2019 to 3 February 2019
Schladming, Austria
Europe/Vienna timezone

X(3872) as a virtual companion pole

1 Feb 2019, 08:30
30m
Schladming, Austria

Schladming, Austria

JUFA Hotel Schladming Coburgstraße 253 8970 Schladming Austria

Speaker

Prof. Francesco Giacosa (Kielce University)

Description

We study the state X(3872) as a companion state of a regular axial-vector charm-anticharm state, which is dressed by D-D mesonic loops. As a consequence, in addition to a quite broad quark-antiquark state predicted by the quark model, a very narrow peak at the D-D threshold -identified with X(3872) -emerges quite naturally. Moreover, the quarkonium core can explain the prompt production of this state. Quite interestingly, our approach can explain the magnitude of the isospin-suppressed decay into a j/Psi and a rho meson. Radiative decays are also studied. In conclusion, a consistent picture of the different and quite conflicting features of this enigmatic states can be explained in a simple quantum field theoretical framework.

Primary author

Prof. Francesco Giacosa (Kielce University)

Co-authors

Milena Piotrowska (Jan Kochanowski University) Susana Coito (IST-Lisbon)

Presentation materials