Results of high statistic two-photon collisions at Belle are presented. Only γγ → hh̄ process is included in this report, here hh̄ could be π+π-, K+K-, Ks0Ks0, DD̄, pp̄, ΛΛ or Σ0Σ0. Measurements of Γγγ→RB(R → hh̄) for charmonia resonance states are listed. A new χc2′ candidate in γγ → DD̄ has been identified as a spin-2 (helicity-2) object. Cross section and production angle distributions are measured and compared with various QCD calculations.
- Two-photon collision