Discrimination of New Physics Models with the International Linear Collider

Abstract

The large hadron collider (LHC) is anticipated to provide signals of new physics at the TeV scale, which are likely to involve production of a WIMP dark matter candidate. The international linear collider (ILC) is to sort out these signals and lead us to some viable model of the new physics at the TeV scale. In this article, we discuss how the ILC can discriminate new physics models, taking the following three examples: the inert Higgs model, the supersymmetric model, and the littlest Higgs model with T-parity. These models predict dark matter particles with different spins, 0, 1/2, and 1, respectively, and hence comprise representative scenarios. Specifically, we focus on the pair production process, e+e- -> chi+chi- -> chi0chi0W+W-, where chi0 and chi+- are the WIMP dark matter and a new charged particle predicted in each of these models. We then evaluate how accurately the properties of these new particles can be determined at the ILC and demonstrate that the ILC is capable of identifying the spin of the new charged particle and discriminating these models.

30 pages, 9 figures, submitted to Physical Review D

References in corpus (7)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Particle Flow Calorimetry and the PandoraPFA Algorithm
• Spin Analysis of Supersymmetric Particles
• The LCFIVertex package: vertexing, flavour tagging and vertex charge reconstruction with an ILC vertex detector
• Event Reconstruction with MarlinReco at the ILC

Cited by in corpus (7)

• Pure Gravity Mediation with m_{3/2} = 10-100TeV
• Physics at the e+ e- Linear Collider
• Reconstruction of Inert Doublet Scalars at the International Linear Collider
• Compressing the Inert Doublet Model
• Decoding Dark Matter at future $e^{+}{e}^{-}$ colliders
• Tau reconstruction methods at an electron-positron collider in the search for new physics
• Distinguishing nonstandard scalar and fermionic charged particles at future $e^{+}{e}^{-}$ collider