2014/09/05 by Marta Luszczak, Antoni Szczurek, Christophe Royon
Physics and Astronomy · #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep02(2015)098
26 pages, 17 figure and 1 table. arXiv admin note: substantial text overlap with arXiv:1309.7201
arxiv created 2014/09/05 · arxiv updated 2015/06/22
W+ W- production is one of the golden channels for testing the Standard Model as well for searches beyond the Standard Model. We discuss many new subleading processes for inclusive production of W+ W- pairs generally not included in the litterature so far. We focus mainly on photon-photon induced processes. We include elastic-elastic, elastic-inelastic, inelastic-elastic and inelastic-inelastic contributions. We also calculate the contributions with resolved photons including the partonic substructure of the virtual photon. Predictions for the total cross section and differential distributions in W- boson rapidity and transverse momentum as well as WW invariant mass are presented. The γγ components only constitute about 1-2 % of the inclusive W+ W- cross section but increases up to about 10 % at large W± transverse momenta, and are even comparable to the dominant q q component at large MWW, i.e. are much larger than the g g → W+ W- one.