Search for the y(4140) via e(+)e(-) -> gamma phi J/psi at root s=4.23, 4.26 and 4.36 Gev
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KünyeAblikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J. ... BESIII Collaboration. (2015). Search for the y(4140) via e(+)e(-) -> gamma phi J/psi at root s=4.23, 4.26 and 4.36 Gev. Physical Review D, 91(3), 1-11. http://dx.doi.org/10.1103/PhysRevD.91.032002
Using data samples collected at center-of-mass energies root s = 4.23, 4.26, and 4.36 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the production of the charmoniumlike state Y(4140) through a radiative transition followed by its decay to phi J/psi. No significant signal is observed and upper limits on sigma[e(+)e(-) -> gamma Y(4140)] . B(Y(4140) -> phi J/psi at the 90% confidence level are estimated as 0.35, 0.28, and 0.33 pb at root s = 4.23, 4.26, and 4.36 GeV, respectively.