Observation of a new charged charmoniumlike state inB¯0→J/ψK-π+decays

By Belle Collaboration K. Chilikin, R. Mizuk, I. Adachi, H. Aihara, S. Said, K. Arinstein, D. Asner, V. Aulchenko, T. Aushev, R. Ayad and 154 more. 2014

148 citations recorded by the source corpus.

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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2e3a54be0fad98c84b56263d3a2f509bf4b5ae0e

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In Nuclear and High Energy Physics

1. G. Lanfranchi
2. U. Egede
3. N. Serra
4. E. Graverini
5. T. Blake
6. P. Robbe
7. T. Skwarnicki
8. Vladimir Vava Gligorov

Citations in the corpus

• Measurement of CP-Averaged Observables in the B (2020, background): “[1], the systematic uncertainty from residual differences between data and simulation is significantly reduced, owing to an improved decay model for B→ J/ψK∗0 decays [67].”