https://doi.org/10.1140/epjc/s10052-019-7110-z
Regular Article - Theoretical Physics
Charmed baryon–nucleon interaction
1
Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Edificio 9, 07738, Mexico D.F., Mexico
2
Departamento de Física Fundamental and IUFFyM, Universidad de Salamanca, 37008, Salamanca, Spain
* e-mail: valcarce@usal.es
Received:
14
May
2019
Accepted:
3
July
2019
Published online:
15
July
2019
We present a comparative study of the charmed baryon–nucleon interaction based on different theoretical approaches. For this purpose, we make use of (i) a constituent quark model tuned in the light-flavor baryon–baryon interaction and the hadron spectra, (ii) existing results in the literature based both on hadronic and quark-level descriptions, (iii) (
)-flavor lattice QCD results of the HAL QCD Collaboration at unphysical pion masses and their effective field theory extrapolation to the physical pion mass. There is a general qualitative agreement among the different available approaches to the charmed baryon–nucleon interaction. Different from hadronic models based on one-boson exchange potentials, quark-model based results point to soft interactions without two-body bound states. They also support a negligible channel coupling, due either to tensor forces or to transitions between different physical channels, 
–
. Short-range gluon and quark-exchange dynamics generate a slightly larger repulsion in the 
than in the 
partial wave. A similar asymmetry between the attraction in the two S waves of the interaction also appears in hadronic approaches. A comparative detailed study of Pauli suppressed partial waves, as the 
and 
channels, would help to disentangle the short-range dynamics of two-baryon systems containing heavy flavors. The possible existence of charmed hypernuclei is discussed.
© The Author(s), 2019
