COMPOSITE HIGGS BOSONS IN THE NAMBU-JONA-LASINIO MODEL

If more than one doublet of composite Higgs bosons is formed with quarks and antiquarks alone in the Nambu-Jona-Lasinio model, their couplings to quarks are subject to interesting constraints. The Higgs doublets orthogonal to the linear combination responsible for mass generation almost decouple with the right-handed t quark, but couple with one or more of the right-handed u, d, s, c, and b quarks with Yukawa coupling constants of order 1. If there are only two light doublets, the doublet orthogonal to the mass-generating combination is likely to couple with the right-handed b quark with a Yukawa coupling constant mtv. © 1990 The American Physical Society.