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We study the factorization and resummation of t-channel top quark transversemomentum distribution at large pT in the SM at both the Tevatron and the LHCwith soft-collinear effective theory. The cross section in the threshold regioncan be factorized into a convolution of hard, jet and soft functions. Inparticular, we first calculate the NLO soft functions for this process, andgive a RG improved cross section by evolving the different functions to acommon scale. Our results show that the resummation effects increase the NLOresults by about 9%-13% and 4%-9% when the top quark pT is larger than 50 and70 GeV at the Tevatron and the 8 TeV LHC, respectively. Also, we discuss thescale independence of the cross section analytically, and show how to choosethe proper scales at which the perturbative expansion can converge fast.

Resummation prediction on top quark transverse momentum distribution at large pT