Open charm contributions to the E1 transitions of $\psi (3686)$ and $\psi (3770)\to \gamma {\chi }_{cJ}$

Abstract

The E1 transitions of $\psi (3686)$ and $\psi (3770)\to \gamma {\chi }_{cJ}$ are investigated in a non-relativistic effective field theory (NREFT) where the open charm effects are included systematically as the leading corrections. It also allows a self-consistent inclusion of the $S$-$D$ mixing in the same framework. We are able to show that the open charm contributions are essential for understanding the significant discrepancies between the non-relativistic leading order calculations and the experimental data.

11 pages, 2 figures

References in corpus (6)

• Big-Bang Nucleosynthesis
• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation of the resonant character of the $Z(4430{)}^{-}$ state
• Effect of charmed meson loops on charmonium transitions
• Towards a dynamical understanding of the non-$D\bar{D}$ decay of $\psi (3770)$
• Study a0(980)-f0(980) mixing from a0(980) -> f0(980) transition

Cited by in corpus (2)

• Cross section line shape of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ around the $Y(4260)$ mass region
• Partial wave effects in the heavy quarkonium radiative electromagnetic decays