Hadronic transitions from Upsilon(4S) as a probe of four-quark admixture
High Energy Physics - Phenomenology
2016-12-21 v2 High Energy Physics - Experiment
Abstract
It is argued that the observed enhancement of the hadronic transition Upsilon(4S) -> Upsilon(1S) eta relative to Upsilon(4S) -> Upsilon(1S) pi pi can be explained if the resonance Upsilon(4S) contains an admixture of a four-quark component, possibly due to the coupling to the meson channel B \bar B. A test of the discussed mechanism by searching for the transition Upsilon(4S) -> Upsilon(1S) eta'(958) is suggested. Some properties of possible four-quark states related to the suggested one by the heavy quark spin symmetry are also discussed.
Keywords
Cite
@article{arxiv.1101.3542,
title = {Hadronic transitions from Upsilon(4S) as a probe of four-quark admixture},
author = {M. B. Voloshin},
journal= {arXiv preprint arXiv:1101.3542},
year = {2016}
}
Comments
6 pages, some points are clarified, a reference added