Loading...
research article
Observation of a new charged charmoniumlike state in B-0 -> J/psi K- pi(+) decays
2014
We present the results of an amplitude analysis of B-0 --> J/psi K- pi(+) decays. A new charged charmoniumlike state Z(c)(4200)(+) decaying to J/psi pi(+) is observed with a significance of 6.2 sigma. The mass and width of the Z(c)(4200)(+) are 4196(-29-13)(+31+17) MeV/c(2) and 370(-70-132)(+70+70) MeV, respectively; the preferred assignment of the quantum numbers is J(P) = 1(+). In addition, we find evidence for Z(c)(4430)(+) --> J/psi pi(+). The analysis is based on a 711 fb(-1) data sample collected by the Belle detector at the asymmetric-energy e(+)e(-) collider KEKB.
Type
research article
Web of Science ID
WOS:000348730800002
Authors
Chilikin, K.
•
Mizuk, R.
•
Adachi, I.
•
Aihara, H.
•
Al Said, S.
•
Arinstein, K.
•
Asner, D. M.
•
Aulchenko, V.
•
Aushev, T.
•
Ayad, R.
Corporate authors
Belle Collaboration
Publication date
2014
Publisher
Published in
Volume
90
Issue
11
Article Number
112009
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 13, 2015
Use this identifier to reference this record