Branching Ratios for Higgs Boson Decays
This Demonstration describes the variation of the Higgs boson branching ratios , for eight different decay modes, as a function of the Higgs boson mass . The results are obtained using first-order perturbation theory. Curves are shown for Higgs decay into pairs of gauge bosons (γ, g, Z, and W) and some fermion/anti-fermion pairs (τ, c, b, t), for different values of the coupling constants , , and . This is, in fact, a simple simulation of what the world might look like if and . The effects of the coupling strengths on particle masses are not considered. You can display any one or combination of decay modes by marking the corresponding checkboxes.
 M. E. Peskin and D. V. Schroeder, An Introduction to Quantum Field Theory, Boulder, CO: Westview Press, 2005. westviewpress.com/books/an-introduction-to-quantum-field-theory.
 V. D. Barger and R. J. N. Phillips, Collider Physics, updated ed., Reading, MA: Addison-Wesley, 1997.