SCENARIO B

In this model the axigluon decays to two heavy quarks. There are heavy
quark partners for 1st and 2nd generation right-handed standard model
quarks. The partners of u_r, c_r, d_r and s_r are called hur, hcr, hdr
and hsr. The heavy quarks then decay to 3 quark jets via an off-shell axigluon.

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PARAMETERS:
(all the parameters are explicitly defined in our paper 1209.6375)

gaxi: coupling of the axigluon to the light quarks, corresponds to $g_A$ in our paper. The couplings to heavy quarks are all determined once this is fixed by the relations
described in appendix A of our paper.


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HOW TO GENERATE THE FULL DECAY CHAIN

> define heavy = hur hur~ hcr hcr~ hdr hdr~ hsr hsr~

> define jets = u u~ c c~ d d~ s s~

> generate p p > axi axi, ( axi > heavy heavy, heavy > j j j )