Evidence for Z±c(3900) in semi-inclusive decays of b-flavored hadrons
We present evidence for the exotic charged charmoniumlike state Z±c(3900) decaying to J/ψπ± in semi-inclusive weak decays of b-flavored hadrons. The signal is correlated with a parent J/ψπ+π− system in the invariant-mass range 4.2–4.7 GeV that would include the exotic structure Y(4260). The study is based on 10.4 fb−1 of p¯p collision data collected by the D0 experiment at the Fermilab Tevatron collider.
Physical Review D, 98, 052010, 2018