Higgs boson production and decay in 5D warped models

TL;DR

This paper investigates Higgs boson production and decay at the LHC within 5D warped models, considering full flavor effects and multiple Kaluza-Klein levels, comparing different metric scenarios to understand their impact on observable rates.

Contribution

It extends previous analyses by including complete flavor structures and multiple KK levels, providing a comprehensive numerical study of Higgs processes in warped extra-dimensional models.

Findings

Higgs production cross section varies with KK level inclusion.

Decay branching fractions are affected by the warped geometry.

Modified metric scenarios show distinct phenomenological signatures.

Abstract

We calculate the production and decay rates of the Higgs boson at the LHC in the context of general 5 dimensional (5D) warped scenarios with a spacetime background modified from the usual $AdS_5$, with SM fields propagating in the bulk. We extend previous work by considering the full flavor structure of the SM, and thus including all possible flavor effects coming from mixings with heavy fermions. We proceed in three different ways, first by only including two complete Kaluza-Klein (KK) levels ($15\times15$ fermion mass matrices), then including three complete KK levels ($21\times21$ fermion mass matrices) and finally we compare with the effect of including the infinite (full) KK towers. We present numerical results for the Higgs production cross section via gluon fusion and Higgs decay branching fractions in both the modified metric scenario and in the usual Randall-Sundrum metric scenario.