Please visit Jefferson Lab Event Policies and Guidance before planning your next event: https://www.jlab.org/conference_planning.

Sep 5 – 9, 2022
online
US/Eastern timezone
Thank you to all the participants for a great QNP2022!

Exotic molecular meson states of open bottom and strange flavors

Sep 7, 2022, 1:45 PM
20m
online

online

FSU, Tallahassee, FL, USA
oral presentation Hadron Spectroscopy

Speaker

Dr Luis Roca (Universidad de Murcia)

Description

We evaluate theoretically the interaction of the open bottom and strange systems $\bar B\bar K$, $\bar B^* \bar K$, $\bar B\bar K^*$ and $\bar B^*\bar K^*$ to look for possible bound states which could correspond to exotic non--quark-antiquark mesons since they would contain at least one $b$ and one $s$ quarks. The s-wave scattering matrix is evaluated implementing unitarity by means of the Bethe-Salpeter equation, with the potential kernels obtained from contact and vector meson exchange mechanisms. The vertices needed are supplied from Lagrangians derived from suitable extensions of the hidden gauge symmetry approach to the bottom sector.
We find poles below the respective thresholds for isospin 0 interaction and evaluate the widths of the different obtained states by including the main sources of imaginary part.

speaker affiliation Universidad de Murcia (Spain)

Primary author

Dr Luis Roca (Universidad de Murcia)

Co-author

Prof. Eulogio Oset (F\'{\i}sica Te\'orica and IFIC, Centro Mixto Universidad de Valencia-CSIC )

Presentation materials