Decay channels and charmonium mass-shifts

Abstract

The discovery in the last few years of the $X,Y$ and $Z$ states of the extended charmonium family has highlighted the importance of the closeness of decay channels to an understanding of these mesons. We aid this debate by illustrating a simple calculational procedure for including the effect of open and nearby closed channels.

4 pages, 2 figures Revised version: (1) corrected 2 typos in Table II, (2) additional text in penultimate paragraph to clarify the calculation of mass-shifts for ${\eta }_c^{\prime }$ and ${\eta }_c"$. We thank colleagues for pointing out confusing wording of previous text

References in corpus (1)

• A low-lying scalar meson nonet in a unitarized meson model

Cited by in corpus (3)

• Peak shifts due to $B^{(\ast )}-{\bar{B}}^{(\ast )}$ rescattering in ${\rm Y}(5S)$ dipion transitions
• Hadronic-loop induced mass shifts in scalar heavy-light mesons
• The two-body open charm decays of $Z^{+}(4430)$