Ruling out some predictions of deeply-bound light-heavy tetraquarks using lattice QCD

Authors

  • Brian Colquhoun York University
  • Anthony Francis Universitat Bern
  • Renwick Hudspith PRISMA+ Cluster of Excellence and Intitut fur Kernphysik
  • Randy Lewis York University
  • Kim Maltman York University

DOI:

https://doi.org/10.31349/SuplRevMexFis.3.0308044

Keywords:

Lattice QCD, Tetraquarks, Hadron Structure

Abstract

We discuss our lattice QCD calculations of a number of tetraquark channels with at least one heavy quark where some phenomenological models, already fully constrained by fits to the ordinary meson and baryon spectrum, predict deep binding. We find no evidence of deeply-bound tetraquarks, except in previously established strong-interaction stable $I=0$, $J^P=1^+$, $ud\bar{b}\bar{b}$ and $I=1/2$, $J^P=1^+$ $\ell s\bar{b}\bar{b}$ (where $\ell=u/d$) channels, allowing us to rule out models predicting deep binding. Preliminary results from an updated analysis of doubly-bottom tetraquarks are also presented.

References

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Published

2022-06-08

How to Cite

1.
Colquhoun B, Francis A, Hudspith R, Lewis R, Maltman K. Ruling out some predictions of deeply-bound light-heavy tetraquarks using lattice QCD. Supl. Rev. Mex. Fis. [Internet]. 2022 Jun. 8 [cited 2022 Dec. 7];3(3):0308044 1-5. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6279