Higgs boson production in photon-photon collision at ILC: a comparative study in different little Higgs models

Abstract

We study the process γγ->h->bb_bar at ILC as a probe of different little Higgs models, including the simplest little Higgs model (SLH), the littlest Higgs model (LH), and two types of littlest Higgs models with T-parity (LHT-I, LHT-II). Compared with the Standard Model (SM) prediction, the production rate is found to be sizably altered in these little Higgs models and, more interestingly, different models give different predictions. We find that the production rate can be possibly enhanced only in the LHT-II for some part of the parameter space, while in all other cases the rate is suppressed. The suppression can be 10% in the LH and as much as 60% in both the SLH and the LHT-I/LHT-II. The severe suppression in the SLH happens for a large \tanβand a small m_h, in which the new decay mode h->ηη(ηis a light pseudo-scalar) is dominant; while for the LHT-I/LHT-II the large suppression occurs when f and m_h are both small so that the new decay mode h->A_H A_H is dominant. Therefore, the precision measurement of such a production process at the ILC will allow for a test of these models and even distinguish between different scenarios.

Version in JHEP (h-g-g & h-gamma-gamma expressions added)

References in corpus (18)

• Role of h --> eta eta in Intermediate-Mass Higgs Boson Searches at the Large Hadron Collider
• Cosmic Positron Signature from Dark Matter in the Littlest Higgs Model with T-parity
• Higgs-pair Production in Littlest Higgs Model with T-parity
• A Little Higgs Model with Exact Dark Matter Parity
• Higgs-pair Production and Decay in Simplest Little Higgs Model
• Light pseudoscalar eta and H->eta eta decay in the simplest little Higgs mode
• Invisible Higgs boson decay in the littlest Higgs model with T-parity
• Higgs and Z-boson FCNC decays correlated with B-meson decays in littlest Higgs model with T-parity
• Higgs boson productions at LHC as a probe of different littlest Higgs models with T-parity
• Bounds on the Simplest Little Higgs Model Mass Spectrum Through Z Leptonic Decay
• Lone Higgs at the LHC
• Production and decays of the light pseudoscalar boson $\eta$ at the LHC in the simplest little Higgs model
• Dark Matter in the Simplest Little Higgs Model
• Associated production of the Higgs boson and a single top quark in the littlest Higgs model at Large Hadron Collier
• Towards a measurement of the two-photon decay width of the Higgs boson at a Photon Collider
• Light Higgs-boson production at the Photon Collider at TESLA with an improved background analysis
• Associated production of the scalars and new gauge bosons from a little Higgs model at the LHC
• Measurement of the Two Photon Decay Width of the Higgs Boson at the TESLA Photon Collider

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• Higgs boson decays and production in the left-right twin Higgs model
• Left-right twin Higgs model confronted with the latest LHC Higgs data
• Rare Z-decay into light pseudoscalar bosons in the simplest little Higgs model
• Pseudoscalar boson and SM-like Higgs boson productions at LHC in simplest little Higgs model
• Associated Production of Z_H and T in the Littlest Higgs Model at High Energy Linear e^-e^+ Collider