Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-01-26
Phys.Rev.D79:096002,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, no figures, uses RevTeX; typos corrected
Scientific paper
10.1103/PhysRevD.79.096002
To illuminate how electroweak symmetry breaking shapes the physical world, we investigate toy models in which no Higgs fields or other constructs are introduced to induce spontaneous symmetry breaking. Two models incorporate the standard SU(3)_c x SU(2)_L x U(1)_Y gauge symmetry and fermion content similar to that of the standard model. The first class--like the standard electroweak theory--contains no bare mass terms, so the spontaneous breaking of chiral symmetry within quantum chromodynamics is the only source of electroweak symmetry breaking. The second class adds bare fermion masses sufficiently small that QCD remains the dominant source of electroweak symmetry breaking and the model can serve as a well-behaved low-energy effective field theory to energies somewhat above the hadronic scale. A third class of models is based on the left-right--symmetric SU(3)_c x SU(2)_L x SU(2)_R x U(1)_{B-L} gauge group. In a fourth class of models, built on SU(4)_{PS} x SU(2)_L x SU(2)_R gauge symmetry, lepton number is treated as a fourth color. Many interesting characteristics of the models stem from the fact that the effective strength of the weak interactions is much closer to that of the residual strong interactions than in the real world. The Higgs-free models not only provide informative contrasts to the real world, but also lead us to consider intriguing issues in the application of field theory to the real world.
Quigg Chris
Shrock Robert
No associations
LandOfFree
Gedanken Worlds without Higgs: QCD-Induced Electroweak Symmetry Breaking does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gedanken Worlds without Higgs: QCD-Induced Electroweak Symmetry Breaking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gedanken Worlds without Higgs: QCD-Induced Electroweak Symmetry Breaking will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-371811