Abstract

With the (225±)×106J/ψ events, (106.4±0.92)×106ψ′ events, 2.9fb−1ψ(3770) events, and several fb−1 data samples around s=4.260 GeV. We study the light hadron spectroscopy, charmonium (charmonium-like) physics, and charm physics. The τ mass measurement is performed with the scan data ranging from s=3088.7 MeVto3693.5MeV.

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