Jun 5 – 9, 2023
Genova, Italy
Europe/Rome timezone

Heavy Baryons and Heavy Quark Symmetry

Jun 7, 2023, 2:30 PM
DAD - Room Benvenuto (Genova, Italy)

DAD - Room Benvenuto

Genova, Italy

Invited Heavy baryon spectroscopy Heavy baryon spectroscopy


Juan Nieves (IFIC (CSIC-UV))


In this work, we study the charm and bottom lowest-lying
${\frac{1}{2}}^-$ and ${\frac{3}{2}}^-$ $\Lambda_{Q}$ resonances
using a model which considers the interplay between the nearest
baryon-meson and bare constituent quark model (CQM) degrees of
freedom. For the former ones, we only consider the scattering of
pions off $\Sigma_Q^{(*)}$ baryons. In addition, we constrain the
couplings between CQM and meson-baryon states using HQSS.

We show that the $\Lambda(1405)$ chiral two-pole pattern does not
have analog in the $\frac12^-$ charmed and bottom sectors, because
i) the $ND^{(*)}$ and $N\bar B^{(*)} $ channels do not play for
heavy quarks the decisive role that the $N \bar K$ does in the
strange sector, and ii) because the notable influence of the bare
CQM states for the charm and bottom resonances. Moreover, we will
also discuss the great importance of taking into account the chiral
$\pi \Sigma_{c,b}^{(*)}$ channels and their interplay with the CQM
degrees of freedom.

Primary author

Juan Nieves (IFIC (CSIC-UV))

Presentation materials