The bestest little Higgs
While little Higgs models provide an interesting way to address the hierarchy problem, concrete models in the literature typically face two major obstacles. First, the mechanism for generating a Higgs quartic coupling often leads to large violations of custodial symmetry. Second, there is a tensi...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Springer Berlin / Heidelberg
2011
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| Online Access: | http://hdl.handle.net/1721.1/64479 https://orcid.org/0000-0002-2406-8160 |
| Summary: | While little Higgs models provide an interesting way to address the hierarchy
problem, concrete models in the literature typically face two major obstacles. First, the
mechanism for generating a Higgs quartic coupling often leads to large violations of custodial
symmetry. Second, there is a tension between precision electroweak observables in the
gauge sector and ne-tuning in the top sector. In this work, we present a new little Higgs
model which solves both of these problems. The model is based on an SO(6) SO(6)=SO(6)
coset space which has custodial symmetry built in. The Higgs quartic coupling takes a
particularly simple form and does not su er from the \dangerous singlet" pathology. We
introduce a gauge breaking module which decouples the mass of gauge partners from the
mass of top partners, allowing for natural electroweak symmetry breaking. The collider
phenomenology is dominated by production and decay of the top partners, which are considerably
lighter than in traditional little Higgs theories. |
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