Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..aprx10003l&link_type=abstract
American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #X10.003
Physics
Scientific paper
The QED correction to hadron collider production of lepton pairs through the Drell-Yan process at next-to-leading order (NLO) is included in the new version of the simulation code FEWZ (Fully Exclusive W and Z Production). We calculate the contributions of the initial/final-state photon radiation (ISR/FSR) as well as the virtual photon correction analytically, and the program is fully differential in the phase space of leptons and additional photonic radiation. It eliminates the need to unfold the FSR effect when comparing experimental data with the theoretical prediction given by the original FEWZ, which only includes the QCD corrections. We demonstrate the code by discussing the effects of photon recombination and different lepton masses. We also study the combined QCD and QED correction to lepton pair production and compare results with experimental data.
Li Ye
Petriello Frank
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