MadDM

Calculation of the sigmav

Asked by Mattia Di Mauro

I calculated the sigmav for the model DMsimp_s_spin0.
The output in the file MadDM_results.txt is:

################################################
# Indirect Detection #
################################################
# Results in brackets display [prediction, upper limit]

# Annihilation cross section computed with the method: reshuffling
# <sigma v>[cm^3 s^-1] of continuum spectrum final states and Fermi dSph limits (if available, else -1)
52.-52>6.-6 = [0.00e+00,1.00e-15]
52.-52>24.-24 = [3.66e-38,2.80e-26]
52.-52>23.23 = [1.31e-39,2.82e-26]
52.-52>25.25 = [0.00e+00,1.00e-15]
52.-52>54.54 = [0.00e+00,-1.00e+00]

What are the numbers 52, 6, 24, 23, 25, 54 associated to? They are the code for the particles but where can I find the name of the particle associated to each number?

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Daniele Massaro
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Best Daniele Massaro (dmassaro) said : 		#1

Hello Mattia Di Mauro,

yes, those numbers are the PDG codes of the particles.
A first resource to have a look at them is the Monte Carlo numbering scheme on the PDG document https://pdg.lbl.gov/2020/reviews/rpp2020-rev-monte-carlo-numbering.pdf
You can also have a look at the param_card.dat of your model, the PDG code is next to the various information of the particles (e.g. the mass).

Cheers.
--
Daniele Massaro

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Mattia Di Mauro (mdimauro) said : 		#2

Thanks Daniele Massaro, that solved my question.