OpenLoops is hosted by Hepforge, IPPP Durham

OpenLoops Process Library

The following libraries are available within OpenLoops and contain all relevant matrix elements to compute NLO QCD corrections, including color- and helicity-correlations and (mostly) real radiation amplitudes.

Libraries ending with "2" contain loop-squared amplitudes (with closed fermion loops) for all Boson-pair production processes with any combination of vector bosons and Higgs bosons plus up to one additional jet.

NLO electroweak corrections will be supported soon as well.

Note: the set of available processes will be further extended in the near future. However, please do not hesitate to send us an email if the process you want to study is not (yet) available.


Categories
t ➞ Wb+jets
pp ➞ ttVV+jets
pp ➞ tt+jets
pp ➞ tV+jets
pp ➞ tH+jets
pp ➞ t+jets
pp ➞ jets
pp ➞ Vtt+jets
pp ➞ VVV+jets
pp ➞ VV+jets
pp ➞ V+jets
pp ➞ Htt+jets
pp ➞ HV+jets
pp ➞ HH+jets
pp ➞ H+jets
ee ➞ vv+jets
ee ➞ v+jets
ee ➞ tttt+jets
ee ➞ tt+jets
ee ➞ llllbb
ee ➞ hllllbb
ee ➞ Htt+jets
HEFT pp ➞ HH+jets
HEFT pp ➞ H+jets
 
t ➞ Wb+jets
Library Process Decription
tblnt ➞ lnb(j)Top-quark decay via an off-shell W-boson (with emission of a gluon).
tbqqt ➞ qqb(j)Hadronic top-quark decay via an off-shell W-boson (with emission of a gluon).
tbwt ➞ wb(j)Top-quark decay (with emission of a gluon).
 
pp ➞ ttVV+jets
Library Process Decription
ppaattpp ➞ ttAATop-quark pair and two photons production.
 
pp ➞ tt+jets
Library Process Decription
ppttpp ➞ ttTop-quark pair production.
ppttjpp ➞ ttjTop-quark pair production with an additional jet.
ppttjjpp ➞ ttjjTop-quark pair production with two additional jets.
 
pp ➞ tV+jets
Library Process Decription
pptajpp ➞ tAjSingle top plus photon and jet production.
pptajjpp ➞ tAjjSingle top plus photon and two jets production (both 4 and 5 flavour scheme). Note that in the 5FS there is overlap with tAW production with a hadronic W decay. No real corrections included.
pptlljpp ➞ tlljSingle top plus off-shell Z/A boson and one jet production with leptonic decays (l+l- and nn).
pptlljjpp ➞ tlljjSingle top plus off-shell Z/A boson and two jets production with leptonic decays (l+l- and nn, both 4 and 5 flavour scheme). Note that in the 5FS there is overlap with tZW production with a hadronic W decay. No real corrections included.
pptlnpp ➞ tlnSingle top plus off-shell W+/W- boson production with leptonic decays. No real corrections included.
pptwpp ➞ tWSingle top plus on-shell W+/W- production. No real corrections included.
pptzjpp ➞ tZjSingle top plus on-shell Z and one jet production.
pptzjjpp ➞ tZjjSingle top plus on-shell Z and two jets production (both 4 and 5 flavour scheme). Note that in the 5FS there is overlap with tZW production with a hadronic W decay. No real corrections included.
 
pp ➞ tH+jets
Library Process Decription
ppthjpp ➞ tHjSingle top plus Higgs boson production and one jet.
ppthjjpp ➞ tHjjSingle top plus Higgs boson production and two jets (both 4 and 5 flavour scheme). Note that in the 5FS there is overlap with tHW production with a hadronic W decay. No real corrections included.
 
pp ➞ t+jets
Library Process Decription
pptjpp ➞ tjSingle top plus jet production.
pptjjpp ➞ tjjSingle top plus two jets production (both 4 and 5 flavour scheme). Note that in the 5FS there is overlap with tW production with a hadronic W decay. No real corrections included.
 
pp ➞ jets
Library Process Decription
ppjjpp ➞ jjProduction of two jets.
ppjjjpp ➞ jjjProduction of three jets.
ppjjjjpp ➞ jjjjProduction of four jets; no real corrections included.
 
pp ➞ Vtt+jets
Library Process Decription
ppattpp ➞ AttPhoton plus t t-bar production.
ppattjpp ➞ AttjPhoton plus t t-bar jet production.
ppllttpp ➞ llttOff-shell Z/A boson plus t t-bar production with leptonic decays (l+l- and nn)
ppllttjpp ➞ llttjOff-shell Z/A boson plus t t-bar jet production with leptonic decays (l+l- and nn)
pplnttpp ➞ lnttOff-shell W+/W- boson plus t t-bar production with leptonic decays
pplnttjpp ➞ lnttjOff-shell W+/W- boson plus t t-bar jet production with leptonic decays
ppwttpp ➞ WttOn-shell W+/W- plus t t-bar production.
ppwttjpp ➞ WttjOn-shell W+/W- plus t t-bar jet production.
ppzttpp ➞ ZttOn-shell Z plus t t-bar production.
ppzttjpp ➞ ZttjOn-shell Z plus t t-bar jet production.
 
pp ➞ VVV+jets
Library Process Decription
ppllaapp ➞ llAAProduction of an off-shell vector bosons (W/Z) with leptonic decay and two photons.
ppvvvpp ➞ VVVProduction of three on-shell vector bosons (Photon, W, Z in all combinations).
ppvvvjpp ➞ VVVjProduction of three on-shell vector bosons and a jet (Photon, W, Z in all combinations).
 
pp ➞ VV+jets
Library Process Decription
ppaapp ➞ AAPhoton pair production
ppaajpp ➞ AAjPhoton pair plus jet production
ppaajjpp ➞ AAjjPhoton pair plus two jets production
ppllapp ➞ llAOff-shell Z/A boson and on-shell photon production with leptonic decays (l+l- and nn)
pplla2gg ➞ llALoop-induced matrix elements for off-shell Z/A boson with leptonic decay (l+l- and nn) plus on-shell photon production in gluon fusion.
ppllajpp ➞ llAjOff-shell Z/A boson and on-shell photon production plus jet with leptonic decays (l+l- and nn)
ppllaj2gg ➞ llAjLoop-squared matrix elements for off-shell Z/A boson with leptonic decay (l+l- and nn) plus on-shell photon and jet production.
ppllajjpp ➞ llAjjOff-shell Z/A boson and on-shell photon production plus two jets with leptonic decays (l+l- and nn)
ppllllpp ➞ llllProduction of four leptons (all combinations of leptons and neutrinos).
ppllll2gg ➞ llllLoop-induced production of four leptons (all combinations of leptons and neutrinos) in gluon fusion.
ppllll2_onlyhgg ➞ llllApproximation 'onlyh'; Loop-induced production of four leptons (all combinations of leptons and neutrinos) in gluon fusion: only diagrams which contain a Higgs Yukawa coupling
pplllljpp ➞ lllljProduction of four leptons (all combinations of leptons and neutrinos) and a jet.
ppllllj2pp ➞ lllljSquared one-loop matrix elements for four lepton production (all combinations of leptons and neutrinos); gluon fusion (+qq splitting), i.e. gggllll and gqqllll where the four-lepton system is directly coupled to the quark loop.
ppllllj2_onlyhgg ➞ lllljApproximation 'onlyh'; Loop-induced production of four leptons (all combinations of leptons and neutrinos) in gluon fusion (+qq splitting), i.e. gggllll and gqqllll: only diagrams which contain a Higgs Yukawa coupling
ppllnnjj_vbspp ➞ llvvjj W+W+ and W-W- vector boson scattering with different flavour leptonic decays at O(alpha_s^3*alpha^4) (all channels) and O(alpha_s^1*alpha^6) (only "uc channel", i.e. quark lines of different generations). For VBS approximation, calculate the same quark generation channels using the uc channel matrix elements and a symmetry factor.
pplnapp ➞ lnAOff-shell W+/W- boson and on-shell photon production with leptonic decays
pplnajpp ➞ lnAjOff-shell W+/W- boson and on-shell photon production plus jet with leptonic decays
pplnajjpp ➞ lnAjjOff-shell W+/W- boson and on-shell photon production plus two jets with leptonic decays
ppvv2gg ➞ VVLoop-induced matrix elements for on-shell vector boson pair production (Photon, W, Z in all combinations) in gluon fusion.
ppvvj2gg ➞ VVjLoop-squared matrix elements for on-shell vector boson pair production (Photon, W, Z in all combinations) plus one jet.
ppwapp ➞ WAOn-shell W+/W- boson and photon production
ppwajpp ➞ WAjOn-shell W+/W- boson and photon plus jet production
ppwajjpp ➞ WAjjOn-shell W+/W- boson and photon plus two jets production
ppwwpp ➞ WWOn-shell W boson pair production
ppwwjpp ➞ WWjOn-shell W boson pair plus jet production
ppwwjjpp ➞ WWjjOn-shell W boson pair (W+W-, W+W+, W-W-) plus two jets production
ppzapp ➞ ZAOn-shell Z boson and photon production
ppzajpp ➞ ZAjOn-shell Z boson and photon plus jet production
ppzajjpp ➞ ZAjjOn-shell Z boson and photon plus two jets production
ppzwpp ➞ ZWOn-shell Z and W+/W- boson production
ppzwjpp ➞ ZWjOn-shell Z and W+/W- boson plus jet production
ppzwjjpp ➞ ZWjjOn-shell Z and W+/W- boson plus two jets production
ppzzpp ➞ ZZOn-shell Z boson pair production
ppzzjpp ➞ ZZjOn-shell Z boson pair plus jet production
ppzzjjpp ➞ ZZjjZ boson pair plus two jets production
 
pp ➞ V+jets
Library Process Decription
ppajpp ➞ AjPhoton plus one jet production
ppaj2pp ➞ AjLoop-induced photon plus jet production from gluon fusion.
ppajjpp ➞ AjjPhoton plus two jets production
ppajj2pp ➞ AjjLoop-squared photon plus two jets production.
ppajjjpp ➞ AjjjPhoton plus three jets production
ppllpp ➞ llOff-shell Z/A boson production with leptonic decays (l+l- and nn)
ppll2pp ➞ llLoop-induced off-shell Z boson production with leptonic decay (l+l- and nn) from gluon fusion.
pplljpp ➞ lljOff-shell Z/A boson plus one jet production with leptonic decays (l+l- and nn)
ppllj2pp ➞ lljLoop-squared off-shell Z/A boson production with leptonic decay (l+l- and nn) plus jet.
pplljjpp ➞ lljjOff-shell Z/A boson plus two jets production with leptonic decays (l+l- and nn)
pplljjjpp ➞ lljjjOff-shell Z/A boson plus three jets production with leptonic decays (l+l-)
pplnpp ➞ lnOff-shell W+/W- boson production with leptonic decays
ppln_ckmpp ➞ lnOff-shell W+/W- boson production with leptonic decay with non-diagonal CKM
pplnjpp ➞ lnjOff-shell W+/W- boson plus one jet production with leptonic decays
pplnj_ckmpp ➞ lnjOff-shell W+/W- boson production with leptonic decay and a jet with non-diagonal CKM
pplnjjpp ➞ lnjjOff-shell W+/W- boson plus two jets production with leptonic decays
pplnjj_ckmpp ➞ lnjOff-shell W+/W- boson production with leptonic decay with non-diagonal CKM
pplnjjjpp ➞ lnjjjOff-shell W+/W- boson plus three jets production with leptonic decays
ppnnjjjpp ➞ nnjjjOff-shell Z/A boson plus three jets production with neutrino decays
ppwpp ➞ WOn-shell W+/W- boson production
ppw_ckmpp ➞ WOn-shell W+/W- boson production with non-diagonal CKM
ppwjpp ➞ WjOn-shell W+/W- boson plus one jet production
ppwj_ckmpp ➞ WjOn-shell W+/W- boson production with non-diagonal CKM
ppwjjpp ➞ WjjOn-shell W+/W- boson plus two jets production
ppwjj_ckmpp ➞ WjjOn-shell W+/W- boson production with non-diagonal CKM
ppwjjjpp ➞ WjjjOn-shell W+/W- boson plus three jets production
ppzpp ➞ ZOn-shell Z boson production
ppz2pp ➞ ZLoop-induced on-shell Z boson production from gluon fusion.
ppzjpp ➞ ZjOn-shell Z boson plus one jet production
ppzj2pp ➞ ZjLoop-squared on-shell Z boson plus jet production.
ppzjjpp ➞ ZjjOn-shell Z boson plus two jets production
ppzjjjpp ➞ ZjjjOn-shell Z boson plus three jets production
 
pp ➞ Htt+jets
Library Process Decription
pphttpp ➞ HttHiggs plus t t-bar production.
pphttjpp ➞ HttjHiggs plus t t-bar jet production.
 
pp ➞ HV+jets
Library Process Decription
pphllpp ➞ HllHiggs plus off-shell Z/A boson production with leptonic decays (l+l- and nn)
pphll2gg ➞ HllLoop-induced matrix elements for Higgs plus off-shell Z boson production with leptonic decays (l+l- and nn) in gluon fusion.
pphlljpp ➞ HlljHiggs plus off-shell Z/A boson and one jet production with leptonic decays (l+l- and nn)
pphllj2gg ➞ HlljLoop-squared matrix elements for Higgs plus off-shell Z/A boson production and a jet with leptonic decays (l+l- and nn).
pphlljjpp ➞ HlljjHiggs plus off-shell Z/A boson and two jets production with leptonic decays (l+l- and nn)
pphlnpp ➞ HlnHiggs plus off-shell W+/W- boson production with leptonic decay
pphlnjpp ➞ HlnjHiggs plus off-shell W+/W- boson and one jet production with leptonic decay
pphlnjjpp ➞ HlnjjHiggs plus off-shell W+/W- boson and two jets production with leptonic decay
pphwpp ➞ HWHiggs plus on-shell W+/W- boson production
pphwjpp ➞ HWjHiggs plus on-shell W+/W- boson and one jet production
pphwjjpp ➞ HWjjHiggs plus on-shell W+/W- boson and two jets production
pphzpp ➞ HZHiggs plus on-shell Z boson production
pphz2gg ➞ HZLoop-induced matrix elements for Higgs plus on-shell Z boson in gluon fusion.
pphzjpp ➞ HZjHiggs plus on-shell Z boson and one jet production
pphzj2gg ➞ HZjLoop-squared matrix elements for Higgs plus on-shell Z boson and a jet.
pphzjjpp ➞ HZjjHiggs plus on-shell Z boson and two jets production
 
pp ➞ HH+jets
Library Process Decription
pphh2pp ➞ HHLoop-induced Higgs pair production.
pphhj2pp ➞ HHjLoop-squared Higgs pair production with a jet.
pphhjjpp ➞ HHjjVector boson fusion-like Higgs-pair plus two jets production at O(alpha_s*alpha^4). All diagrams included, i.e. no VBF diagram selection.
 
pp ➞ H+jets
Library Process Decription
bbhbb ➞ HHiggs production from initial state b quarks. Can be used with massless b quarks with finite Yukawa coupling.
bbhjbb ➞ HjHiggs production from (at least one) initial state b quark(s). Can be used with massless b quarks with finite Yukawa coupling.
pph2pp ➞ HLoop induced Higgs production (massive b quarks and Yukawas allowed).
pphbbpp ➞ HbbHiggs production plus two jets with b quarks in the initial and/or final state. Can be used with massless b quarks with finite Yukawa coupling.
pphbbjpp ➞ HbbjHiggs production plus three jets with b quarks in the initial and/or final state. Can be used with massless b quarks with finite Yukawa coupling.
pphj2pp ➞ HjLoop induced Higgs plus jet production (massive b quarks allowed, but not as external states; Yukawas allowed).
pphjj2pp ➞ HjjLoop induced Higgs plus two jets production (massive b quarks allowed, but not as external states; Yukawas allowed).
pphjj_vbfpp ➞ HjjProduction of Higgs plus two jets. Complete alpha_s*alpha^3 contribution including vector boson fusion and Higgs Strahlung-like production HV(->jj).
 
ee ➞ vv+jets
Library Process Decription
eevvjjee ➞ vvjjProduction of two on-shell vector bosons (Photon, W, Z in all combinations) and two jets
 
ee ➞ v+jets
Library Process Decription
eevjjee ➞ vjjProduction of an on-shell vector bosons (Photon, W, Z in all combinations) and two jets
 
ee ➞ tttt+jets
Library Process Decription
eettttee ➞ ttttt t-bar t t-bar production in e+e-.
eettttjee ➞ ttttt t-bar t t-bar and one jet production in e+e-.
 
ee ➞ tt+jets
Library Process Decription
eettee ➞ ttTop-quark pair production in e+e-.
eettjee ➞ ttjTop-quark pair production and one jet in e+e-.
 
ee ➞ llllbb
Library Process Decription
eellllbbee ➞ llllbboff-shell t t-bar production and decay in e+e- (all lepton combinations).
 
ee ➞ hllllbb
Library Process Decription
eehllllbbee ➞ hllllbbHiggs plus off-shell t t-bar production and decay in l+l- (e+mu-vv,e-mu+vv,e+e-vv).
 
ee ➞ Htt+jets
Library Process Decription
eehttee ➞ HttHiggs plus t t-bar production in e+e-.
eehttjee ➞ HttjHiggs plus t t-bar production and one jet in e+e-.
 
HEFT pp ➞ HH+jets
Library Process Decription
heftpphhpp ➞ HHHiggs-pair production in the Higgs effective field theory.
heftpphhjpp ➞ HHjHiggs-pair plus jet production in the Higgs effective field theory.
heftpphhjjpp ➞ HHjjHiggs-pair plus two jet production in the Higgs effective field theory.
 
HEFT pp ➞ H+jets
Library Process Decription
heftpphpp ➞ HHiggs production in the Higgs effective field theory.
heftpphjpp ➞ HjHiggs plus jet production in the Higgs effective field theory.
heftpphjjpp ➞ HjjHiggs plus two jets production in the Higgs effective field theory.
heftpphjjjpp ➞ HjjjHiggs plus three jets production in the Higgs effective field theory.