Anomalous Higgs Couplings in the $SO(5)\times U(1)_{B-L}$ Gauge-Higgs Unification in Warped Spacetime

Yutaka Hosotani; Yutaka Sakamura

doi:10.1143/PTP.118.935

paper

Anomalous Higgs Couplings in the $S O (5) \times U (1)_{B - L}$ Gauge-Higgs Unification in Warped Spacetime

arXiv:hep-ph/0703212 · doi:10.1143/PTP.118.935

Abstract

The gauge couplings $W W Z$ , $W W W W$ , and $W W Z Z$ in the gauge-Higgs unification scenario in the Randall-Sundrum warped spacetime remain almost universal as in the standard model, but substantial deviation results for the Higgs couplings. In the $S O (5) \times U (1)_{B - L}$ model, the couplings $W W H$ and $Z Z H$ are suppressed by a factor $cos θ_{H}$ from the values in the standard model, while the bare couplings $W W H H$ and $Z Z H H$ are suppressed by a factor $1 - (2/3) sin^{2} θ_{H}$ . Here $θ_{H}$ is the Yang-Mills AB phase (Wilson line phase) along the fifth dimension, which characterizes the electroweak symmetry breaking. The suppression can be used to test the gauge-Higgs unification scenario at LHC and ILC. It is also shown that the $W W Z$ coupling in flat spacetime deviates from the standard model value at moderate values of $θ_{H}$ , contradicting with the LEP2 data.

34 pages, 3 eps files, published version

References in corpus (1)

Gauge symmetry breaking in orbifold model building

Anomalous Higgs Couplings in the SO(5)×U(1)B−L​ Gauge-Higgs Unification in Warped Spacetime

Abstract

References in corpus (1)

Cited by in corpus (28)

Anomalous Higgs Couplings in the $S O (5) \times U (1)_{B - L}$ Gauge-Higgs Unification in Warped Spacetime