Higgs-pair production in littlest Higgs model with T parity

作者：Lei Wang, Wenyu Wang, Jin Min Yang, Huanjun Zhang · 发表于：Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 年份：2007 · DOI：10.1103/physrevd.76.017702 · 被引用次数：57 · 研究领域：Particle physics theoretical and experimental studies、High-Energy Particle Collisions Research、Quantum Chromodynamics and Particle Interactions

The Higgs-pair production process at the CERN Large Hadron Collider, which will provide a way to test the Higgs boson self-coupling, may be sensitive to new physics. In the framework of the littlest Higgs model with $T$ parity, such Higgs-pair production can proceed through additional loop diagrams, and thus the production rate can be quite different from the standard model prediction. Our calculations show that, due to the loop contributions of both $T$-even and $T$-odd quarks predicted in this model, the production rate can be significantly enhanced relative to the standard model prediction and also can be larger than the production rate in the minimal supersymmetric model. Also, we find that the $T$-odd quark contributions, which were not included in a previous study, are equally important compared with the $T$-even quark contributions.