Probe noncommutative space–time scale using γγ→Z at ILC

  title={Probe noncommutative space–time scale using $\gamma$$\gamma$→Z at ILC},
  author={X. He and Xue–qian Li},
  journal={Physics Letters B},
Abstract In the standard model production of on-shell Z boson at a photon collider (or Z decays into γγ) is strictly forbidden by angular momentum conservation and Bose statistics (the Yang's theorem). In the standard model with noncommutative space–time this process can occur. Therefore this process provides an important probe for the noncommutative space–time. The γγ collision at the ILC by laser backscattering of the electron and positron beams offers an ideal place to carry out such a study… Expand
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