Addendum to: Search for anomalous top–gluon couplings at LHC revisited Zenrō Hioki and Kazumasa Ohkuma Eur. Phys. J. C, 71 2 (2011) 1535 Published online: 08 February 2011 DOI: 10.1140/epjc/s10052-010-1535-8