Bounds onMZ1.2in AnySU(2)L ⊗ SU(2)R ⊗ U(1)B−LGauge Model

If the known fermions transform under $\mathrm{SU}{\mathrm{}\left(2\right)\mathrm{}}_L \otimes \mathrm{SU}{\mathrm{}\left(2\right)\mathrm{}}_R \otimes \mathrm{U}{\mathrm{}\left(1\right)\mathrm{}}_{B-L}$, then the two neutral vector gauge bosons must satisfy the bounds $83 \mathrm{GeV}<M_{Z_1}<116\mathrm{} \mathrm{GeV}$ and $M_{Z_2}>200\mathrm{}$ GeV. In addition, if mixing is negligible for the two charged vector gauge bosons, then $75 \mathrm{GeV}<M_{W_1}<97\mathrm{} \mathrm{GeV}$. These results come directly from analyzing existing experimental data and do not depend on any further theoretical assumptions, such as the value of $\frac{g_L}{g_R}$ or the choice of Higgs-boson representations.