More hidden heavy quarkonium molecules and their discovery decay modes

Abstract

To validate the molecular description of the observed $Z_b(10610)/Z_b(10650)$ and $Z_c(3900)/Z_c(4025)$, it is valuable to investigate their counterparts, denoted as $Z_{QV}^{(\prime )}$ in this work, and the corresponding decay modes. In this work, we present an analysis of the $Z_{QV}^{(\prime )}$ using flavor symmetry. We also use the effective Lagrangian based on the heavy quark symmetry to explore the rescattering mechanism and calculate the partial widths for the isospin conserved channels $Z_{QV}^{(\prime )}\to {\eta }_{Q}V$. The predicted partial widths are of an order of MeV for $Z_{QV}\to {\eta }_{Q}V$, which correspond to branching ratios of the order of $10^{-2}\sim 10^{-1}$. For $Z_{QV}^{\prime }\to {\eta }_{Q}V$, the partial widths are a few hundreds of keV and the branching ratios are about $10^{-3}$. Future experimental measurements can test our predictions on the partial widths and thus examine the molecule description of heavy quarkoniumlike exotic states.

11 pages, 2 figures; accepted by Phys. Rev. D

References in corpus (13)

• Heavy quarkonium: progress, puzzles, and opportunities
• Charmonium
• Quarkonia and their transitions
• Effect of charmed meson loops on charmonium transitions
• Evidence that the Y(4660) is a f_0(980)psi' bound state
• Confirming the molecular nature of the $Z_b(10610)$ and the $Z_b(10650)$
• Decays of Zb(+) and Zb'(+) as hadronic molecules
• $Z_b/Z_b^{\prime }\to {\rm Y}\pi$ and $h_b\pi$ decays in intermediate meson loops model
• The evasion of helicity selection rule in ${\chi }_{c1}\to VV$ and ${\chi }_{c2}\to VP$ via intermediate charmed meson loops
• Novel analysis of the decays psi' -> h_c pi^0 and eta_c'-> chi_{c0} pi^0
• Further study of the helicity selection rule evading mechanism in ${\eta }_c$, ${\chi }_{c0}$ and $h_c$ decaying to baryon anti-baryon pairs
• Is $Z_b(10610)$ a Molecular State?
• Enhanced mixing of partial waves near threshold for heavy meson pairs and properties of $Z_b(10610)$ and $Z_b(10650)$ resonances

Cited by in corpus (9)

• Probing the nature of Z_c states via the eta_c rho decay
• Production of $Z_c(3900$) and $Z_c(4020)$ in $B_c$ decay
• Exploring the ${\rm Y}(4S,5S,6S)\to h_b(1P)\eta$ hidden-bottom hadronic transitions
• Charged charmoniumlike structures in the $e^{+}{e}^{-}\to \psi (3686){\pi }^{+}{\pi }^{-}$ process based on the ISPE mechanism
• Study on the radiative decays of $h_c$ via intermediate meson loops model
• $D$ wave bottomonia production from $Z_b^{(\prime )}$ decay
• Evasion of HSR in the charmless decays of excited $P$-wave charmonia
• Pure annihilation decays of $B_s^0\to a_0^{+}{a}_0^{-}$ and $B_d^0\to K_0^{\ast +}{K}_0^{\ast -}$ in the PQCD approach
• Radiative decays of the neutral $Z_c(3900)$ and $Z_c(4020)$