Testing the littlest Higgs model with T parity at the CERN Large Hadron Collider

Journal Article · Mon Sep 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.055018· OSTI ID:21250767

Matsumoto, Shigeki ^[1]; Moroi, Takeo ^[2]; Tobe, Kazuhiro ^[3]

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1. Department of Physics, University of Toyama, Toyama 930-8555 (Japan)
2. Department of Physics, Tohoku University, Sendai 980-8578 (Japan)
3. Department of Physics, Nagoya University, Nagoya 464-8602 (Japan)

In the framework of the littlest Higgs model with T parity (LHT), we study the production processes of T-even (T{sub +}) and T-odd (T{sub -}) partners of the top quark at the Large Hadron Collider (LHC). We show that the signal events can be distinguished from the standard model backgrounds, and that information about mass and mixing parameters of the top partners can be measured with relatively good accuracies. With the measurements of these parameters, we show that a nontrivial test of the LHT can be performed. We also discuss a possibility to reconstruct the thermal relic density of the lightest T-odd particle A{sub H} using the LHC results and show that the scenario where A{sub H} becomes dark matter may be checked.

• OSTI ID: 21250767
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN LHC
DENSITY
HIGGS MODEL
MASS
MIXING
NONLUMINOUS MATTER
PARITY
PARTICLE PRODUCTION
PARTICLES
STANDARD MODEL
T QUARKS