期刊
PHYSICAL REVIEW LETTERS
卷 98, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysREvLett.98.082001
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We report the first observation of a charmoniumlike state recoiling from the J/psi in the inclusive process e(+)e(-)-> J/psi+anything at a mass of (3.943 +/- 0.006 +/- 0.006) GeV/c(2). We also observe the decay of this state into (DD)-D-* and determine its intrinsic width to be less than 52 MeV/c(2) at the 90% C.L. These results are obtained from a 357 fb(-1) data sample collected with the Belle detector near the Upsilon(4S) resonance, at the KEKB asymmetric-energy e(+)e(-) collider.
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