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In minimal supersymmetric standard model the R-parity violating interactionscan induce anomalous top pair productions at the LHC through the t-channelprocess d_R \bar d_R -> t_L \bar t_L by exchanging a slepton or u-channelprocess d_R \bar d_R -> t_R \bar t_R by exchanging a squark. Such top pairproductions with certain chirality cause top quark polarization in the top pairevents. We found that at the LHC, due to the large statistics, the statisticalsignificance of the polarization observable and thus the probing ability forthe corresponding R-parity violating couplings are much higher than at theTevatron upgrade.Comment: more comments added (7 pages, 5 figs

Probing R-parity violating interactions from top-quark polarization at LHC