SPINUP information for Ztautau at NLO
Dear MG5_aMC team,
We are currently developing a Z+jet FxFx setup with up to 3 jets in the final state and where the Z decays to tau pairs. Our process is defined with the standard commands:
generate p p > ta+ ta- [QCD] @0
add process p p > ta+ ta- j [QCD] @1
add process p p > ta+ ta- j j [QCD] @2
add process p p > ta+ ta- j j j [QCD] @3
We intend to shower the events using Pythia8. We want to include all tau decay modes and would prefer
(if possible) not use the narrow width approximation, but we find that the SPINUP information is not present in
the LHE file. It seems that this is intentional from:
https:/
https:/
But we wanted to ask if there is any way to generate these events so that spin correlations are preserved? Is there a fundamental reason why the SPINUP information cannot be added to the LHE for NLO processes?
Best,
Josh
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