24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

The coupled channel approach to the Lambda_c N - Sigma_c N system in lattice QCD

28 Jul 2016, 17:50
20m
Building B2a Room 2065 (Highfield Campus, University of Southampton)

Building B2a Room 2065

Highfield Campus, University of Southampton

Talk Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions

Speaker

Mr Takaya for HAL QCD Collaboration Miyamoto (Yukawa Institute for Theoretical Physics, Kyoto University)

Description

We investigate the 2-baryon system with the isospin 1/2 including one charm quark, namely, $\Lambda_c N$ and $\Sigma_c N$. Although this system is similar to the $\Lambda N$ and $\Sigma N$ system, the interaction of this charmed 2-baryon system above $\Sigma_c N$ threshold might be quite different from its hyperon counter part, due to the smaller mass splitting between $\Sigma_c$ and $\Sigma_c^*$ than $\Sigma$ and $\Sigma^*$, which is consequence of the heavy quark spin symmetry. To explore this possibility, we calculate the coupled channel potential for charmed 2-baryon system using the HAL QCD method in lattice QCD. To avoid the discretization error coming from the heavy quark mass, we employ the Relativistic Heavy Quark (RHQ) action for the charm quark. The purpose of this talk is to present our latest results and to discuss the nature of the interaction in the charmed 2-baryon system including a possibility on the existence of bound or resonance states.

Primary author

Mr Takaya for HAL QCD Collaboration Miyamoto (Yukawa Institute for Theoretical Physics, Kyoto University)

Presentation Materials