Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Hadron Spectroscopy and Interactions
Heavy and light spectroscopy near the physical point, Part II: Tetraquarks
A. Francis,* R.J. Hudspith, R. Lewis, K. Maltman
*corresponding author
Full text: pdf
Pre-published on: December 27, 2016
Published on: March 24, 2017
Abstract
Having introduced the ensembles and basic spectrum in Part I of this conference contribution, we focus on results for a doubly heavy tetraquark candidate, $qq^\prime \bar Q \bar Q$.
Based on phenomenological observations regarding heavy baryon systems, we motivate two possible lattice interpolating operators: a diquark-antidiquark and a meson-meson. We show that these operators exhibit good behaviour both in terms of lattice QCD and their phenomenological interpretation. In particular we study the $ud \bar b \bar b$ and $\ell s \bar b \bar b$ flavor combinations and analyze their binding. At the physical point, at finite lattice spacing, we find strong indications for binding of these tetraquark candidates. We comment on possible finite volume effects and search windows for experimental confirmation.
DOI: https://doi.org/10.22323/1.256.0132
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access