Strong decays of strange quarkonia

Abstract

In this paper we evaluate strong decay amplitudes and partial widths of strange mesons (strangeonia and kaonia) in the 3 P 0 decay model. We give numerical results for all energetically allowed open-flavor two-body decay modes of all ns and ss strange mesons in the 1S, 2S, 3S, 1P, 2P, 1D and 1F multiplets, comprising strong decays of a total of 43 resonances into 525 two-body modes, with 891 numerically evaluated amplitudes. This set of resonances includes all strange qq states with allowed strong decays expected in the quark model up to ca. 2.2 GeV. We use standard nonrelativistic SHO quark model wavefunctions to evaluate these amplitudes, and quote numerical results for all amplitudes present in each decay mode. We also discuss the status of the associated experimental candidates, and note which states and decay modes would be especially interesting for future experimental study at hadronic, e + e − and photoproduction facilities. These results should also be useful in distinguishing conventional quark model mesons from exotica such as glueballs and hybrids through their strong decays. *

A candidate for 1−− strangeonium hybrid

“…2 3 D 1 or 3 3 S 1 ss quarkonium. The decay of 3 3 S 1 ss quarkonium has been studied in 3 P 0 model by T.Barnes et al, [28], and this state is predicted to be a rather broad state , Γ ≈ 380 MeV, so Y (2175) should not be 3 3 S 1 ss state. However, the decay of 2 3 D 1 ss quarkonium has not been considered so far, it is urgent and interesting to study …”

“…The hybrid state can decay into 2S+1S meson pairs in relative P −wave, if it is not forbidden by the phase space, e.g, the 1 −− strangeonium hybrid can decay to K * (1410)K, if the problematic state K * (1410) is taken as a 2 3 S 1 state [28]. But the decay mode K(1460)K is forbidden by the "spin selection rule" [13], since K(1460) is a 2 1 S 0 strange quarkonium [28].…”

“…But the decay mode K(1460)K is forbidden by the "spin selection rule" [13], since K(1460) is a 2 1 S 0 strange quarkonium [28].…”

Higher radial and orbital excitations in the charmed meson family

“…where the mixing angle is θ 1P = −54.7 • which is determined by the heavy quark limit [41,85,86]. The width of D 1 (2420) (Γ = 70 ± 21) was first measured by the ARGUS Collaboration [23].…”

Search for Strangeonia in Photoproduction using CLAS

“…Crucial among the various channels to be explored in HyCLAS are those for strangeonia, resonances such as φ (1680), X(1750) and φ 3 (1850) decaying to ηφ . This decay channel is the signature that will unequivocally identify a strangeonium (ss) state [7] and will be a main focus of this study. ηφ , η φ are ss signature decay modes due to their negligible interference with non-strange nn vector decay modes.…”