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Observation of a ppb mass threshoud enhancement in \psi^\prime\to\pi^+\pi^-J/\psi(J/\psi\to\gamma p\bar{p}) decay
ppb mass \psi^\prime\to\pi^+\pi^-J/\psi(J/\psi\
2010/3/15
The decay channel $\psi^\prime\to\pi^+\pi^-J/\psi(J/\psi\to\gamma p\bar{p})$ is studied using a sample of $1.06\times 10^8$ $\psi^\prime$ events collected by the BESIII experiment at BEPCII. A strong ...
Observation of two-dimensional superlattice solitons
two-dimensional superlattice soliton shallow waveguides superlattices
2010/4/8
We observe experimentally two-dimensional solitons in superlattices comprising alternating deep and shallow waveguides fabricated via the femtosecond laser direct writing technique. We find that the s...