Joint INFN-UNIMI-UNIMIB Pheno Seminars
NNLO soft function for top quark pair production at small transverse momentum
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Europe/Zurich
Edificio U2, Aula 5017 (Dipartimento di Fisica G. Occhialini, U2, Università degli Studi di Milano-Bicocca)
Edificio U2, Aula 5017
Dipartimento di Fisica G. Occhialini, U2, Università degli Studi di Milano-Bicocca
Piazza della Scienza, 3, 20126 Milano MI, Italia
Description
The cross section for top quark pair production factorizes at small transverse momentum of the heavy quark pair, qT. One of the key ingredients that appears in the factorization formula is the soft function, which mediates soft gluon exchanges between particles. I shall present the complete result for the small-qT soft function at the next-to-next-to-leading order. This is the last missing element needed to calculate the NNLO cross section for top quark pair production by means of the qT slicing method.