Abstract
It is suggested that the recently observed enhancement of the relative yield in e+e− annihilation of states with hidden charm and hidden strangeness above 4.43 GeV is associated with the S wave production of the charmed strange meson pairs Ds0(2317)D¯s⁎+c.c. and Ds1⁎(2460)D¯s+c.c. This mechanism implies a pattern of breaking of the Heavy Quark Spin Symmetry (HQSS) that can be tested in the final channels such as ηc(1S)ϕ, hc(1P)η, hc(1P)η′ produced in the same energy range.
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