Determining Triple Gauge Boson Couplings from Higgs Data

In the framework of effective Lagrangians with the $SU(2{)}_L\times U(1{)}_Y$ symmetry linearly realized, modifications of the couplings of the Higgs field to the electroweak gauge bosons are related to anomalous triple gauge couplings (TGCs). Here, we show that the analysis of the latest Higgs boson production data at the LHC and Tevatron give rise to strong bounds on TGCs that are complementary to those from direct TGC analysis. We present the constraints on TGCs obtained by combining all available data on direct TGC studies and on Higgs production analysis.

Figure 1

The 95% C.L. allowed regions (2 d.o.f.) on the plane $\Delta {\kappa }_{\gamma }\otimes \Delta g_1^Z$ from the analysis of the Higgs data from the LHC and Tevatron (filled region) together with the relevant bounds from different TGC studies from collider experiments as labeled in the figure. We also show the estimated constraints obtainable by combining these bounds (hatched region).