PYTHIA 6 | PYTHIA 8 |
Comment |
msti(1), mint(1) | pythia->info.code() |
process ID (but changed numbering) |
pari(13), vint(43) | pythia->info.mHat() |
invariant mass of the hard subprocess |
pari(17), vint(47) | pythia->info.pTHat() |
transverse momentum of the hard subprocess (2 -> 2) |
pari(21), vint(51) | pythia->info.QRen() |
renormalization scale Q of the hard subprocess (default definition changed) |
vint(57) | pythia->info.alphaEM() |
electromagnetic coupling constant in the hard subprocess |
vint(58) | pythia->info.alphaS() |
strong coupling constant in the hard subprocess |
msti(15), mint(15) | pythia->info.id1() |
ID of the first incoming parton |
msti(16), mint(16) | pythia->info.id2() |
ID of the second incoming parton |
pari(33), vint(41) | pythia->info.x1() |
momentum fraction x of the first incoming parton |
pari(34), vint(42) | pythia->info.x2() |
momentum fraction x of the second incoming parton |
pari(23), vint(53) | pythia->info.QFac() |
factorization scale Q of the hard subprocess (default definition changed) |
pari(29), vint(39) | pythia->info.pdf1() |
x1*f(x1) (PDF density 1) |
pari(30), vint(40) | pythia->info.pdf2() |
x2*f(x2) (PDF density 2) |
pari(7), vint(97) | pythia->info.weight() |
event weight (normally unity) |