Search for the Anomalous Interactions of Up-Type Heavy Quarks in γ γ Collision at the LHC

We investigate the anomalous interactions of heavy up-type quark t ′ in a γ γ collision at the LHC. We have obtained 95% confidence level (CL) limit of t ′ q γ ( q = u , c ) anomalous coupling by taking into account three forward detector acceptances: 0 . 0015 < ξ < 0 . 15 , 0 . 0015 < ξ < 0 . 5 , and 0 . 1 < ξ < 0 . 5 .