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(2015)
摘要
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.
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关键词
natural sciences,physical sciences
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