The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks
High Energy Physics - Phenomenology
2015-06-19 v2
Abstract
Following the recent confirmation of the Z+(4430) resonance with J^{PG}=1^{++}, we have re-examined the model of S- and P-wave tetraquarks. We propose a `type-II' diquark-antidiquark model which shows to be very effective at producing a simple and comprehensive picture of the J^{PG}=1^{++} and 1^{--} sectors of the recently discovered charged tetraquarks and of the observed Y resonances. The model is still faced with the unresolved difficulty of explaining why some states seem to have incomplete isospin multiplets.
Keywords
Cite
@article{arxiv.1405.1551,
title = {The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks},
author = {L. Maiani and F. Piccinini and A. D. Polosa and V. Riquer},
journal= {arXiv preprint arXiv:1405.1551},
year = {2015}
}
Comments
17 pages, 1 figure, comments added, typos corrected, to appear in Phys Rev D