Event calendar file
26-31 July 2021
Mexico City
Mexico/General timezone
HADRON 2021 is over. Thanks for making it a success!
- hadron2021@nucleares.unam.mx
Contact information
Mexico City
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Exotic Hadrons and Candidates
Ruling out some predictions of deeply-bound light-heavy tetraquarks using lattice QCD
Speakers
- Dr. Brian COLQUHOUN
Primary authors
- Dr. Renwick HUDSPITH (University of Mainz)
- Dr. Brian COLQUHOUN (York University)
- Dr. Anthony FRANCIS (Albert-Einstein Center, Bern University)
- Dr. Randy LEWIS (York University)
- Dr. Kim MALTMAN (York University)
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 & 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 $I=1/2$, $J^P=1^+$ $ls\bar{b}\bar{b}$ ($l=u/d$) channels, allowing us to rule out models predicting deep binding.
