ar X iv : h ep - p h / 05 02 20 9 v 1 22 F eb 2 00 5 Playing with fermion couplings in Higgsless models
نویسنده
چکیده
We discuss the fermion couplings in a four dimensional SU(2) linear moose model by allowing for direct couplings between the left-handed fermions on the boundary and the gauge fields in the internal sites. This is realized by means of a product of non linear σ-model scalar fields which, in the continuum limit, is equivalent to a Wilson line. The effect of these new non local couplings is a contribution to the ǫ3 parameter which can be of opposite sign with respect to the one coming from the gauge fields along the string. Therefore, with some fine tuning, it is possible to satisfy the constraints from the electroweak data.
منابع مشابه
ar X iv : h ep - p h / 03 02 02 4 v 1 4 F eb 2 00 3 Supersymmetry Physics at Linear Colliders ∗
The experimental potential of e+e− Linear Colliders to explore the properties of supersymmetric particles is reviewed. High precision measurements of masses, spin-parity, gauge quantum numbers, couplings and mixings, production and decay properties will be possible in a clean environment. These achievements will allow the underlying supersymmetry breaking scheme to be revealed, the parameters o...
متن کاملar X iv : h ep - p h / 01 02 00 2 v 1 1 F eb 2 00 1 Supersymmetry and Superpartners
A brief summary is given of studies on supersymmetry and the spectrum of superparticles presented at the Linear Collider Workshop 2000.
متن کاملar X iv : m at h / 05 02 06 9 v 1 [ m at h . SP ] 3 F eb 2 00 5 Triviality of the Peripheral Point Spectrum
If T t = e Zt is a positive one-parameter contraction semigroup acting on l p (X) where X is a countable set and 1 ≤ p < ∞, then the peripheral point spectrum P of Z cannot contain any non-zero elements. The same holds for Feller semigroups acting on L p (X) if X is locally compact.
متن کاملar X iv : h ep - p h / 04 06 02 0 v 3 8 S ep 2 00 4 OSU - HEP - 04 - 06 6 D Higgsless Standard Model
We present a six-dimensional Higgsless Standard Model with a realistic gauge sector. The model uses only the Standard Model gauge group SU(2)L × U(1)Y with the gauge bosons propagating in flat extra dimensions compactified on a rectangle. The electroweak symmetry is broken by boundary conditions, and the correct splitting between the W and Z gauge boson masses can be arranged by suitable choice...
متن کاملar X iv : h ep - t h / 05 11 02 2 v 3 3 F eb 2 00 6 Scaling , self - similar solutions and shock waves for V - shaped field potentials
We investigate a (1+1)-dimensional nonlinear field theoretic model with the field potential V (φ) = |φ|. It can be obtained as the universal small amplitude limit in a class of models with potentials which are symmetrically V-shaped at their minima, or as a continuum limit of certain mechanical system with infinite number of degrees of freedom. We point out that the model has an interesting sca...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005