Order of final_state can result in swapped decay products

[redeboer]

With QRules v0.9.7:

pip install qrules==0.9.7

import graphviz
import qrules  # v0.9.7

result = qrules.generate_transitions(
    initial_state=("J/psi(1S)", [-1, +1]),
    final_state=["Sigma+", "K0", "p~"],
    allowed_intermediate_particles=["N(1440)"],
    allowed_interaction_types="strong",
)
dot = qrules.io.asdot(result, collapse_graphs=True)
graphviz.Source(dot)

With QRules v0.8.2:

pip install qrules==0.8.2

import graphviz
import qrules

result = qrules.generate_transitions(
    initial_state=("J/psi(1S)", [-1, +1]),
    final_state=["p~", "Sigma+", "K0"],
    allowed_intermediate_particles=["N(1440)"],
    allowed_interaction_types="strong",
)
dot = qrules.io.asdot(result, collapse_graphs=True)
graphviz.Source(dot)