Possible contributions to $e^+e^- \to J/ψ+ η_c$ due to intermediate meson rescatterings

Simple item page
dc.creatorZhang, Yuan-Jiang
dc.creatorZhao, Qiang
dc.creatorQiao, Cong-Feng
dc.date2008-06-19
dc.date2008-08-27
dc.date.accessioned2026-07-07T12:27:24Z
dc.date.available2026-07-07T12:27:24Z
dc.descriptionInspired by the obvious discrepancies between experiment and non-relativistic QCD (NRQCD) studies of $e^+ e^-\to J/ψ+η_c$ at $\sqrt{s}\simeq 10.6$ GeV, we investigate contributions from intermediate meson loops as long-range interaction transitions to this process. The intermediate meson loops include $D\bar D(\bar D^\ast)$, $D\bar D^\ast(D {or} D^\ast)$, $D^\ast \bar D^\ast(D)$ and corresponding $D_s$ intermediate mesons. With the constraints from experimental data on the vertex couplings, we find that the intermediate meson loops account for $2.7\sim 6.7 fb$ of the cross sections within a reasonable range of cut-off energies of the factor parameter. We also investigate contributions from the absorptive part and find that it accounts for approximately $0.58\sim 1.38 fb$. These results imply that contributions from long-range interaction transitions may still play a role in such an energy region.
dc.descriptionrevised version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0806.3140
dc.identifierhttp://arxiv.org/abs/0806.3140
dc.identifierPhys.Rev.D78:054014,2008
dc.identifierdoi:10.1103/PhysRevD.78.054014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215198
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titlePossible contributions to $e^+e^- \to J/ψ+ η_c$ due to intermediate meson rescatterings
dc.typetext

Files

Collections

arXiv