Parton level - detector level comparison

[Giancarlo Panizzo]

Dear Delphes team,

is it possible to get information, from the Particle Branch, also on hard scattering particles? I guess yes, but... I have a composite top partner model, that assigns the numbers 800000x with x in [1,n] to the composite sector particles (that, if I understood well from the PDG document, should be wrong for a composite quark partner, but this is another story). The process is production of this top partner and it's decay in w b. After pythia showering and delphes detector simulation, in the Particle branch I cannot find no such PDG code, neither a single particle with such a mass, while e.g. in the pythia log file they're correct. What should I do? Is there something I'm missing?

Thanks

Giancarlo Panizzo

PS: I've just downloaded the latest version, but it didn't worked for 3.0.9 too.

[Michele Selvaggi]

Hi Giancarlo,

could you please attach a small lhe and hep file produced by madgraph?

Michele

[Michele Selvaggi]

Hi Giancarlo,

in your lhe file I see a particle that is saved as pdgcode = 0. It seems that this is the one you are looking for. If you specifically need an other pdgcode I believe there is a way to force madgraph to assign some other code to that particle.
In such case I suggest you contact the mg team.

Cheers,
Michele

[Giancarlo Panizzo]

Ok, thank you Michele, I'll contact them (I'm already telling mg5 the right pdg code!)

Giancarlo

[Giancarlo Panizzo]

Sorry, but I've thought about it... why pythia shows the right pdg code in the log file?

Giancarlo

Replying to giancarlo.panizzo@…:

Ok, thank you Michele, I'll contact them (I'm already telling mg5 the right pdg code!)

Giancarlo

[Giancarlo Panizzo]

Maybe it is a pythia problem, then?

G

Advisory warning type 8 given after 1 PYEXEC calls:
(LUTRAN 5:) particle ID translation is zero

Event number: 1

Event listing of user process at input (simplified)

I IST ID Mothers Colours p_x p_y p_z E m
1 -1 2 0 0 502 0 0.000 0.000 368.291 368.291 0.000
2 -1 21 0 0 501 503 0.000 0.000-1217.266 1217.266 0.000
3 1 -5 1 2 0 503 72.844 -221.704 -579.833 625.050 4.670
4 1 1 1 2 502 0 32.743 2.994 177.592 180.610 0.005
5 2 8000001 1 2 501 0 -105.587 218.709 -446.734 779.898 591.343
6 1 24 5 5 0 0 202.039 210.927 -337.028 453.169 80.399
7 1 5 5 5 501 0 -307.626 7.782 -109.706 326.728 4.670

[Giancarlo Panizzo]

Yes, it WAS ;)

thanks Michele

Giancarlo Panizzo