  We show that the processes of $\gamma b, Hb, Zb, W^-t$ production in
gluon+bottom collision can give interesting informations about possible Higgs
boson, top and bottom quark compositeness. We make illustrations of the ratios
of new cross sections over standard ones. Specific energy dependences appear
for each assumption about $b_L$, $b_R$, $t_L$, $t_R$ compositeness and CSM
constraints concerning the Higgs sector.
