! TTbar production parameters for mtop=166.5 !randomseed 352345 ! uncomment to set the random seed to a value of your choice. ! It generates the call RM48IN(352345,0,0) (see the RM48 manual). ! THIS MAY ONLY AFFECTS THE GENERATION OF POWHEG EVENTS! ! If POWHEG is interfaced to a shower MC, refer to the shower MC ! documentation to set its seed. !Heavy flavour production parameters numevts NEVENTS ! number of events to be generated iseed SEED ! Start the random number generator with seed iseed ih1 1 ! hadron 1 ih2 1 ! hadron 2 #ndns1 131 ! pdf for hadron 1 (hvqpdf numbering) #ndns2 131 ! pdf for hadron 2 ! To be set only if using LHA pdfs lhans1 260000 ! pdf set for hadron 1 (LHA numbering) lhans2 260000 ! pdf set for hadron 2 (LHA numbering) ! To be set only if using different pdf sets for the two incoming hadrons ! QCDLambda5 0.25 ! for not equal pdf sets ebeam1 6500 ! energy of beam 1 ebeam2 6500 ! energy of beam 2 qmass 166.5 ! mass of heavy quark in GeV facscfact 1 ! factorization scale factor: mufact=muref*facscfact renscfact 1 ! renormalization scale factor: muren=muref*renscfact #fixedscale 1 ! use ref. scale=qmass (default 0, use running scale) hdamp 166.5 topdecaymode 22222 ! an integer of 5 digits that are either 0, or 2, representing in ! the order the maximum number of the following particles(antiparticles) ! in the final state: e mu tau up charm ! For example ! 22222 All decays (up to 2 units of everything) ! 20000 both top go into b l nu (with the appropriate signs) ! 10011 one top goes into electron (or positron), the other into (any) hadrons, ! or one top goes into charm, the other into up ! 00022 Fully hadronic ! 00002 Fully hadronic with two charms ! 00011 Fully hadronic with a single charm ! 00012 Fully hadronic with at least one charm !semileptonic 1 ! uncomment if you want to filter out only semileptonic events. For example, ! with topdecaymode 10011 and semileptonic 1 you get only events with one top going ! to an electron or positron, and the other into any hadron. ! Parameters for the generation of spin correlations in t tbar decays tdec/wmass 80.4 ! W mass for top decay tdec/wwidth 2.141 tdec/bmass 4.8 tdec/twidth 1.31 tdec/elbranching 0.108 tdec/emass 0.00051 tdec/mumass 0.1057 tdec/taumass 1.777 tdec/dmass 0.100 tdec/umass 0.100 tdec/smass 0.200 tdec/cmass 1.5 tdec/sin2cabibbo 0.051 ! Parameters to allow-disallow use of stored data use-old-grid 1 ! if 1 use old grid if file pwggrids.dat is present (# 1: regenerate) use-old-ubound 1 ! if 1 use norm of upper bounding function stored in pwgubound.dat, if present; # 1: regenerate ncall1 10000 ! number of calls for initializing the integration grid itmx1 5 ! number of iterations for initializing the integration grid ncall2 100000 ! number of calls for computing the integral and finding upper bound itmx2 5 ! number of iterations for computing the integral and finding upper bound foldcsi 1 ! number of folds on x integration foldy 1 ! number of folds on y integration foldphi 1 ! number of folds on phi integration nubound 100000 ! number of bbarra calls to setup norm of upper bounding function iymax 1 ! <= 10, normalization of upper bounding function in iunorm X iunorm square in y, log(m2qq) ixmax 1 ! <= 10, normalization of upper bounding function in iunorm X iunorm square in y, log(m2qq) xupbound 2 ! increase upper bound for radiation generation pdfreweight 1 ! PDF reweighting dampreweight 1 ! h_damp reweighting (mt/2, mt, mt*2) storeinfo_rwgt 1 ! store weight information withnegweights 0 ! default 0