Motti Intermediate Physics - HAL: CU-1 - Coupling the Standard Model to HAL - Post I-prime, the Higgs Portal, and the Complete L_total

CU-1 closed in three steps without new free parameters. Step 1: U(1)_C embedded in U(1)_Y (Post I-prime); SM Yang-Mills L_YM appended. Step 2: Higgs portal L_portal = -kappa|C|^2|H|^2; kappa = alpha_em m_H^2/C_0^2 = 112.825 GeV^2 (no free params). Step 3: sin^2(theta_W) unchanged. L_total = L_unif + L_YM + L_portal + L_fermions. New predictions: m_H^HAL = 125.706 GeV (+456 MeV); BR(H->invisible) = 0 (m_C >> m_H).