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Resonances contribution to two-photon exchange effects and possible large forward-backward asymmetry in
Hai-Qing Zhou, Bing-Song Zou
The resonances () contribution to two-photon exchange (TPE) effects in is calculated in a simple hadronic model. The calculation…
Measurements of the mass and width of the eta_c using psi' -> gamma eta_c
BESIII Collaboration, M. Ablikim, M. N. Achasov +332
The mass and width of the lowest lying S-wave spin singlet charmonium state, the eta_c, are measured using a data sample of 1.06x10^8 psi' decays collected with the BESIII detector…
decay in the isobar resonance model
Jian-ping Dai, Peng-nian Shen, Ju-jun Xie +1
Based on the effective Lagrangian approach, the decay is studied in an isobar resonance model with the assumption that the -meson is produced from intermed…
Penta-quark states with hidden charm and beauty
Bing-Song Zou
More and more hadron states are found to be difficult to be accommodated by the quenched quark models which describe baryons as 3-quark states and mesons as antiquark-quark states.…
The puzzle of anomalously large isospin violations in
Jia-Jun Wu, Xiao-Hai Liu, Qiang Zhao +1
The BES-III Collaboration recently report the observation of anomalously large isospin violations in , where the in the $…
Proposal and theoretical formalism for studying baryon radiative decays from J/ψ\to B^*\bar B + \bar{B^*}B \to γB\bar B
Sayipjamal Dulat, Jia-Jun Wu, B. S. Zou
With accumulation of high statistics data at BESIII, one may study many new interesting channels. Among them, J/ψ\to B^*\bar B + \bar{B^*}B \to γB\bar B processes may provide valua…