Search for the isospin violating decay y (4260) →j /ψηπ0
Künye
Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J. ... BESIII Collaboration. (2015). Search for the isospin violating decay y (4260) →j /ψηπ0. Physical Review D: Particles, Fields, Gravitation and Cosmology, 92(1), 1-7. https://dx.doi.org/10.1103/PhysRevD.92.012008Özet
Using data samples collected at center-of-mass energies of s=4.009, 4.226, 4.257, 4.358, 4.416, and 4.599 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the isospin violating decay Y(4260)→J/ψηπ0. No signal is observed, and upper limits on the cross section σ(e+e-→J/ψηπ0) at the 90% confidence level are determined to be 3.6, 1.7, 2.4, 1.4, 0.9, and 1.9 pb, respectively.
