TY  - JOUR
AU  - Cata, O.
AU  - Kamenik, J. F.
PY  - 2011
DA  - 2011//
TI  - Electroweak precision observables at one loop in Higgsless models
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 053010
EP  - 9pp
VL  - 83
IS  - 5
PB  - Amer Physical Soc
AB  - We study the viability of generic Higgsless models at low energies when compliance with electroweak precision observables and unitarity constraints up to the TeV scale are imposed. Our analysis shows that consistency with S and T can be achieved at the one-loop level even with a single light vector state, m(V) less than or similar to 500 GeV. However, this scenario turns out to be strongly disfavored when direct resonance searches at the Tevatron are also taken into account. We show that a fully consistent picture can be obtained if an axial state is introduced. Interestingly, mV is still predicted to be light (below 1 TeV) while typical values of m(A) span over the window 1.2m(V) <= m(A) <= 1.4m(V). Our results for the vector channel are rather robust and well within the reach of present-day colliders, while the axial channel is more loosely constrained.
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1010.2226
UR  - https://doi.org/10.1103/PhysRevD.83.053010
DO  - 10.1103/PhysRevD.83.053010
LA  - English
N1  - ISI:000288389300002
ID  - Cata+Kamenik2011
ER  -