Short-range mechanisms of neutrinoless double beta decay at the LHC

We are grateful to Alfonso Zerwekh for useful discussions. J. C. H. thanks the IFIC for hospitality during his stay. This work was supported by UNILHC PITN-GA-2009-237920 and by the Spanish MICINN Grants No. FPA2011-22975 and MULTIDARK No. CSD2009-00064, by the Generalitat Valenciana (Prometeo/2009/091), by Fondecyt (Chile) under Grants No. 11121557 and No. 1100582 and by CONICYT (Chile) Project No. 791100017. H. P. was supported by DGF Grant No. PA 803/6-1 and thanks the Universidad Tecnica Federico Santa Maria for kind hospitality.