Probing Noncommutative Space-Time Scale Using γγ→Z at ILC

  • In this talk we report our work on testing Noncommutative Space-Time Scale Using γγ→Z at ILC. In ordinary space-time theory, decay of a spin-1 particle into two photons is strictly forbidden due to the Yang's Theorem. With noncommutative space-time this process can occur. This process thus provides an important probe for noncommutative space-time. The γγ collision mode at the ILC provides an ideal place to carry out such a study. Assuming an integrated luminosity of 500fb-1, we show that the constraint which can be achieved on Γ(Z→γγ) is three to four orders of magnitude better than the current bound of 5.2×10-5GeV. The noncommutative scale can be probed up to a few TeVs.
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HE Xiao-Gang and LI Xue-Qian. Probing Noncommutative Space-Time Scale Using γγ→Z at ILC[J]. Chinese Physics C, 2007, 31(9): 844-848.
HE Xiao-Gang and LI Xue-Qian. Probing Noncommutative Space-Time Scale Using γγ→Z at ILC[J]. Chinese Physics C, 2007, 31(9): 844-848. shu
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Received: 2007-04-25
Revised: 1900-01-01
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Probing Noncommutative Space-Time Scale Using γγ→Z at ILC

    Corresponding author: LI Xue-Qian,
  • Department of Physics and Center for Theoretical Sciences, Taiwan University, Taipei, China2 Department of Physics, Nankai University, Tianjin 300071, China

Abstract: In this talk we report our work on testing Noncommutative Space-Time Scale Using γγ→Z at ILC. In ordinary space-time theory, decay of a spin-1 particle into two photons is strictly forbidden due to the Yang's Theorem. With noncommutative space-time this process can occur. This process thus provides an important probe for noncommutative space-time. The γγ collision mode at the ILC provides an ideal place to carry out such a study. Assuming an integrated luminosity of 500fb-1, we show that the constraint which can be achieved on Γ(Z→γγ) is three to four orders of magnitude better than the current bound of 5.2×10-5GeV. The noncommutative scale can be probed up to a few TeVs.

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