Charged charmonium-like states as rescattering effects in B -> D_sJ D^(*) decays

Abstract

Using purely phenomenological approach we show that the peaking structures observed in the psi(2S) pi+ and chi_c1 pi+ mass spectra in B -> psi(2S)(chi_c1) pi+ K decays can be result of (D \bar{D}^(*))+ -> (ccbar)_res pi+ rescattering in the decays B -> D_sJ (-> \bar{D}(*) K) D(*). In particular, the position of the peak in the chain B -> D_s(2S) D+ -> K- \bar{D}*0 D+ -> K- psi(2S) pi+ coincides well with the measured Z(4430) mass, assuming the mass of D_s(2S) (the first radial excitation of D_s) to be 2610 MeV/c2. The widths of the Z(4430) peak is also well reproduced in this approach independent on the width of D_s(2S). Although the decay B -> D_s(2S) D+ has not been observed so far and even D_s(2S)-meson is not discovered yet, this decay is expected to be large, and the mass of D_s(2S) is predicted in the range (2600-2650)MeV/c2. The broad bump in chi_c1 pi+ spectrum can be attributed to the B -> D_s*(2S) D+ -> K- \bar{D}0 D+ decay observed with a large branching fraction followed by rescattering \bar{D}0 D^+ -> chi_c1 pi+.

4 pages, 3 figures

References in corpus (8)

• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Hadro-Charmonium
• Is Z^+(4430) a loosely bound molecular state?
• How Resonances can synchronise with Thresholds
• Observation of $\psi (4415)\to D\bar{D}{}_2^{\ast }(2460)$ decay using initial-state radiation
• Search for tetraquark candidate Z(4430) in meson photoproduction
• Threshold effect and π^\pm ψ(2S) peak
• Can the ${\pi }^{+}{\chi }_{c1}$ resonance structures be $D^{\ast }{\bar{D}}^{\ast }$ and $D_1\bar{D}$ molecules?

Cited by in corpus (8)

• The hidden-charm pentaquark and tetraquark states
• The $XYZ$ states: experimental and theoretical status and perspectives
• A New Hadron Spectroscopy
• Hadron interaction with heavy quarkonia
• Charged charmonium-like Z+(4430) from rescattering in conventional B decays
• $Z_c(4430)$ and $Z_c(4200)$ as triangle singularities
• $Z_c(4430)$, $Z_c(4200)$, $Z_1(4050)$, and $Z_2(4250)$ as triangle singularities
• Exotic hadrons associated with $b$-quark