Pentaquarks with anticharm or beauty revisited
arXiv:1901.03578 · doi:10.1016/j.physletb.2019.01.031
Abstract
We use a constituent model to analyze the stability of pentaquark $\bar Q qqqq$ configurations with a heavy antiquark $\bar c$ or $\bar b$, and four light quarks $uuds$, $ddsu$ or $ssud$. The interplay between chromoelectric and chromomagnetic effects is not favorable, and, as a consequence, no bound state is found below the lowest dissociation threshold.
4 pages