Speaker
Lee Tomlinson
(University of Manchester (GB))
Description
The presence of large logarithms in QCD corrections to observables spoils the validity of a calculation truncated at finite order and calls for an all-orders approach. The QT (transverse momentum) spectrum of massive lepton pairs, produced in hadron colliders by the Drell-Yan mechanism, has received a great deal of attention in electroweak phenomenology. We present and discuss a next-to-next-to-leading log (NNLL) resummed calculation of a related observable, namely phistar, that was recently introduced because of its distinct experimental advantages, but which is nonetheless sensitive to similar physics: soft-collinear gluon emission in the initial state. We also present various comparisons to collision data at Tevatron and the LHC.
Authors
Andrea Banfi
(University of Freiburg)
Lee Tomlinson
(University of Manchester (GB))
Mrinal Dasgupta
(Manchester University)
Simone Marzani
(IPPP / Durham University)
