Warped Higgsless Models with IR-Brane Kinetic Terms
We examine a warped Higgsless SU(2){sub L} x SU(2){sub R} x U(1){sub B-L} model in 5-d with IR(TeV)-brane kinetic terms. It is shown that adding a brane term for the U(1){sub B-L} gauge field does not affect the scale ({approx} 2-3 TeV) where perturbative unitarity in W{sub L}{sup +}W{sub L}{sup -} {yields} W{sub L}{sup +}W{sub L}{sup -} is violated. This term could, however, enhance the agreement of the model with the precision electroweak data. In contrast, the inclusion of a kinetic term corresponding to the SU(2){sub D} custodial symmetry of the theory delays the unitarity violation in W{sub L}{sup {+-}} scattering to energy scales of {approx} 6-7 TeV for a significant fraction of the parameter space. This is about a factor of 4 improvement compared to the corresponding scale of unitarity violation in the Standard Model without a Higgs. We also show that null searches for extra gauge bosons at the Tevatron and for contact interactions at LEP II place non-trivial bounds on the size of the IR-brane terms.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 826852
- Report Number(s):
- SLAC-PUB-10389; TRN: US0404242
- Resource Relation:
- Other Information: PBD: 31 Mar 2004
- Country of Publication:
- United States
- Language:
- English
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