Mechanism for a next-to-lowest lying scalar meson nonet
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
Recent work suggests the existence of a non-conventional lowest-lying scalar nonet containing the a0(980). Then the a0(1450) and also the K0*(1430) are likely candidates to belong to a conventional p-wave nonet. However a comparison of their properties with those expected on this basis reveals a number of puzzling features. It is pointed out that these puzzles can be resolved in a natural and robust way by assuming a ``bare'' conventional p-wave scalar nonet to mix with a lighter four quark scalar nonet to form new ``physical'' states. The essential mechanism is driven by the fact that the isospinor is lighter than the isovector in the unmixed multiplet.
Cite
@article{arxiv.hep-ph/9907516,
title = {Mechanism for a next-to-lowest lying scalar meson nonet},
author = {Deirdre Black and Amir H. Fariborz and Joseph Schechter},
journal= {arXiv preprint arXiv:hep-ph/9907516},
year = {2009}
}
Comments
22 pages, 6 figures