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Probe Noncommutative Space-Time Scale Using $gammagamma o Z$ At ILC | Xiao-Gang He
; Xue-Qian Li
; | Date: |
13 Apr 2006 | Abstract: | In the standard model on-shell production of Z boson at a photon collider (or Z decays into $gammagamma$) is strictly forbidden by angular momentum conservation and Bose statistics (Yang’s Theorem). In the standard model based on noncommutative space-time this process can occur. Therefore this process provides an important probe for the noncommutative space-time. The $gammagamma$ collision mode at the ILC by laser backscattering of the electron and positron beams is an ideal place to carry out such a study. Assuming an integrated luminosity of 500 fb$^{-1}$, we show that the constraint which can be obtained on $Gamma(Z o gamma gamma)$ is three to four orders of magnitude better than the current bound of $5.2 imes 10^{-5}$ GeV. The noncommutative scale can be probed up to a few TeV. | Source: | arXiv, hep-ph/0604115 | Services: | Forum | Review | PDF | Favorites |
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