Probing flavor changing interactions in hadron collisions
Chao-Hsi Chang, Liang Han, Yi Jiang, Wen-Gan Ma, Hong Zhou, Mian-Lai Zhou
Abstract
The subprocess gg tc+tc in the two-Higgs-doublet model with flavor-changing scalar couplings is examined at the one loop level. With perturbative QCD factorization theorem, the corresponding cross sections for hadron-hadron collisions are computed numerically. The results are applicable to the whole mass range of the weakly coupled Higgs bosons. In case we could efficiently exclude the severe backgrounds of the tc(tc) production signal, probing the flavor-changing top-charm-scalar vertex at hadron colliders would be very promising and accessible experimentally.
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