English

Basics of doubly heavy tetraquarks

High Energy Physics - Phenomenology 2019-02-27 v1 Nuclear Theory

Abstract

We outline the most important results regarding the stability of doubly heavy tetraquarks QQqˉqˉQQ\bar q\bar q with an adequate treatment of the four-body dynamics. We consider both color-mixing and spin-dependent effects. Our results are straightforwardly applied to the case of all-heavy tetraquarks QQQˉQˉQQ\bar Q\bar Q. We conclude that the stability is favored in the limit MQ/mq1M_Q/m_q \gg 1 pointing to the stability of the bbuˉdˉbb\bar u\bar d state and the instability of all-heavy tetraquarks.

Keywords

Cite

@article{arxiv.1812.10691,
  title  = {Basics of doubly heavy tetraquarks},
  author = {A. Valcarce and J. -M. Richard and J. Vijande},
  journal= {arXiv preprint arXiv:1812.10691},
  year   = {2019}
}

Comments

To appear in the Proc. of the Workshop "XIII International Conference on Beauty, Charm and Hyperon Hadrons", Peniche (Portugal), June 17-23, 2018. To be published by IOP Conference Series