Warped Higgsless Models with IR-Brane Kinetic Terms

Technical Report · Wed Mar 31 04:00:00 EST 2004

DOI:https://doi.org/10.2172/826852· OSTI ID:826852

Davoudiasl, H ^[1]

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1. SLAC

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: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 826852
• Report Number(s): SLAC-PUB-10389
• Country of Publication: United States
• Language: English

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