X(4260)
No signal in
ππJ/ψ
where the
ψ(4S)
is expected,
Because
ψ(4S)→D
s
*
D
s
*
depletes the
ππJ/ψ
signal.
data from BaBar, Phys. Rev. Lett. 95, 142001 (2005)
arXiv:1004.4368 and arXiv:1005.1010