Stable double-heavy tetraquarks: Spectrum and structure

Q. Meng, E. Hiyama, A. Hosaka, M. Oka, P. Gubler, K. U. Can, T. T. Takahashi, H. S. Zong

Research output: Contribution to journalArticlepeer-review

Abstract

Bound states of double-heavy tetraquarks are studied in a constituent quark model. Two bound states are found for isospin and spin-parity I(JP)=0(1+) in the bbu¯d¯ channel. One is deeply bound and compact made of colored diquarks, while the other is shallow and extended as a BB molecule. The former agrees well with lattice QCD results. A systematic decrease in the binding energy is seen by replacing one of the heavy quarks to a lighter one. Altogether we find ten bound states. It is shown for the first time that hadrons with totally different natures emerge from a single Hamiltonian.

Original languageEnglish
Article number136095
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume814
DOIs
Publication statusPublished - Mar 10 2021

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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