TY - JOUR
T1 - Threshold expansion of massive coloured particle cross sections
AU - Beneke, M.
AU - Falgari, P.
AU - Klein, S.
AU - Schwinn, C.
N1 - Funding Information:
S.K. thanks S. Alekhin for useful discussions. This work has been supported in part by the DFG Sonderforschungsbereich/Transregio 9 “Comput-ergestützte Theoretische Teilchenphysik”.
PY - 2010/8
Y1 - 2010/8
N2 - Pair production of massive coloured particles in hadron collisions is accompanied by potentially large radiative corrections related to the suppression of soft gluon emission and enhanced Coulomb exchange near the production threshold. We recently developed a framework to sum both series of corrections for the partonic cross section using soft-collinear and non-relativistic effective theory. If it can be argued that the resummed cross section approximates the complete result over a significant kinematic range, an improvement of the hadronic cross section results, even when the production is not kinematically constrained to the threshold. This is discussed here for the case of top quark production.
AB - Pair production of massive coloured particles in hadron collisions is accompanied by potentially large radiative corrections related to the suppression of soft gluon emission and enhanced Coulomb exchange near the production threshold. We recently developed a framework to sum both series of corrections for the partonic cross section using soft-collinear and non-relativistic effective theory. If it can be argued that the resummed cross section approximates the complete result over a significant kinematic range, an improvement of the hadronic cross section results, even when the production is not kinematically constrained to the threshold. This is discussed here for the case of top quark production.
UR - http://www.scopus.com/inward/record.url?scp=78449233430&partnerID=8YFLogxK
U2 - 10.1016/j.nuclphysbps.2010.08.013
DO - 10.1016/j.nuclphysbps.2010.08.013
M3 - Article
AN - SCOPUS:78449233430
SN - 0920-5632
VL - 205-206
SP - 20
EP - 24
JO - Nuclear Physics B (Proceedings Supplements)
JF - Nuclear Physics B (Proceedings Supplements)
IS - C
ER -