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1. chinaXiv:201703.00608 [pdf]

Determining the upper limit of Γee for the Y(4260)

X. H. Mo; G. Li; C. Z. Yuan; K. L. He; H. M. Hu; Hu J. H.; P. Wang; Z. Y. Wang
Subjects: Physics >> Condensed Matter: Structural, Mechanical and Thermal Properties

By fitting the R values between 3.7 and 5.0 GeV measured by the BES Collaboration, the upper limit of the electron width of the newly discovered resonance Y(4260) is determined to be 240 eV at 90% C.L. Together with the BaBar measurement on Γee? B(Y(4260) → π+π- J/ψ), this implies a large decay width of Y (4260) → π+π- J/ψ final states.

submitted time 2017-03-26 Hits12709Downloads951 Comment 0

2. chinaXiv:201703.00606 [pdf]

Experimental Searches for the Non-D(D) Decays of ψ(3770) in e+e- Collider

K. L. He; X. H. Mo; P. Wang; C. Z. Yuan
Subjects: Physics >> Condensed Matter: Structural, Mechanical and Thermal Properties

The previous experiments which provide information on the ψ(3770) to non-DD decays are reviewed. Three approaches of searching for the non-D(D) decays are discussed in detail. It is also pointed out that the search for the non-D(D) decays of the ψ(3770) is very important for the understanding of the dynamics of charmonium decays.

submitted time 2017-03-26 Hits1468Downloads813 Comment 0

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