### Abstract

We comprehensively study in the littlest Higgs model the phenomenology of the heavy [Formula Presented] gauge boson [Formula Presented] which is the lightest of the newly introduced heavy gauge bosons and toplike vector quarks. Some unexpected behavior is that in the parameter space where the mass of [Formula Presented] is minimized the corrections to the electroweak precision observables are also suppressed. For the global symmetry breaking scale [Formula Presented] the [Formula Presented] is light enough to be produced at a 500 GeV linear collider. We show that this light [Formula Presented] is not excluded by the direct search for the neutral heavy gauge boson at the Fermilab Tevatron in a large portion of the parameter space. Furthermore, even the light [Formula Presented] with a mass around 200 GeV yields negligible contributions to the muon anomalous magnetic moment, which is consistent with the current inconclusive status of the theoretical calculation of [Formula Presented] in the standard model. The effects of the littlest Higgs model on the [Formula Presented] process are also studied; this is one of the most efficient processes to probe the [Formula Presented]

Original language | English |
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Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 69 |

Issue number | 11 |

DOIs | |

Publication status | Published - 2004 Jan 1 |

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### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)