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Constraints on String Resonance Amplitudes

Kingman Cheung·Yueh-Feng Liu
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Abstract

We perform a global analysis of the tree-level open-string amplitudes in the limit $s << M_S^2$ . Based on the present data from the Tevatron, HERA, and LEP~2, we set a lower limit on the string scale $M_S >= 0.69 - 1.96$ TeV at 95 % confidence level for the Chan-Paton factors $|T|=0 - 4$. We also estimate the expected sensitivities at the LHC, which can be as high as 19 TeV for $|T|=4$.

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Kingman Cheung, Yueh-Feng Liu. 2005-05-27. Constraints on String Resonance Amplitudes. https://doi.org/10.1103/physrevd.72.015010

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