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Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Nunnemann, T. (2018): Evidence for Z(c)(+/-)(3900) in semi-inclusive decays of b-flavored hadrons. In: Physical Review D, Vol. 98, No. 5, 52010
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Abstract

We present evidence for the exotic charged charmoniumlike state Z(c)(+/-)(3900) decaying to J/psi pi(+/-) in semi-inclusive weak decays of b-flavored hadrons. The signal is correlated with a parent J/psi pi(+)pi(-) 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) over bar collision data collected by the D0 experiment at the Fermilab Tevatron collider.