Dynamical Symmetry Breaking with Large Anomalous Dimension in Gauge Theories

نویسنده

  • Yuhsuke Yoshida
چکیده

An analysis is given of the dynamical symmetry breaking of semi-simple gauge groups. We construct a class of renormalizable gauge theories for the dynamically broken topcolor and technicolor interactions. It is shown that a fourFermi interaction in the strong coupling phase emerges by the tumbling of semi-simple gauge groups in the low energy region. In our models the topcolor interaction provides the top quark with a large anomalous dimension. PACS numbers 11.15.Ex, 11.30.Qc, 11.30.Rd, 12.60.Fr, 12.60.Nz . ∗ e-mail address : [email protected]

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

ar X iv : h ep - p h / 96 03 29 3 v 1 1 3 M ar 1 99 6 DPNU - 96 - 10 hep - ph / 9603293

We give an introduction to the dynamical symmetry breaking with large anomalous dimension. This is the basis of tightly bound composite Higgs models such as walking technicolor, strong ETC technicolor and top quark condensate, which are all characterized by the large anomalous dimension, γm ≃ 1 (walking technicolor), 1 < γm < 2 (strong ETC technicolor) and γm ≃ 2 (top quark condensate) due to n...

متن کامل

Tumbling and technicolor theory.

The extended technicolor theory is a candidate of the physics beyond the standard model. To explain the mass hierarchy of the quarks and leptons, the extended technicolor gauge symmetry must hierarchically break to the technicolor gauge symmetry. Tumbling gauge theory is considered as a candidate of the dynamics of such hierarchical symmetry breaking, since the sequential self-breaking of the g...

متن کامل

Wilson Lines in Warped Space: Dynamical Symmetry Breaking and Restoration

The dynamics of Wilson lines integrated along a warped extra dimension has been unknown. We study a five dimensional SU(N) pure gauge theory with Randall-Sundrum warped compactification on S/Z2. We clarify the notion of large gauge transformations on the covering space for this setup. We obtain Kaluza-Klein expansions of gauge and ghost fields for the most general twists and background gauge fi...

متن کامل

Gauge Coupling Unification with Anomalous U ( 1 ) A Gauge Symmetry

Recently we proposed a natural scenario of grand unified theories with anomalous U(1)A gauge symmetry, in which doublet-triplet splitting is realized in SO(10) unification using Dimopoulos-Wilczek mechanism and realistic quark and lepton mass matrices can be obtained in a simple way. The scenario has an additional remarkable feature that the symmetry breaking scale and the mass spectrum of supe...

متن کامل

Dynamical electroweak symmetry breaking by quasiconformal technicolour theories

In technicolour (TC) theories, the electroweak (EW) symmetry is broken by chiral symmetry breaking (χSB) in an additional strongly interacting sector, added to the standard model (SM) without elementary Higgs sector. Quasiconformal, that is, walking technicolour (WTC) models with matter in higher representations of the technicolour gauge group are viable candidates for breaking the electroweak ...

متن کامل

ذخیره 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 1995