In the framework of topcolor-assisted technicolor model we calculate the contributions from thc pseudoGoldstone bosons and new gauge bosons to e+e- → tt. We find that for reasonable ranges of the parameters, thepseud...In the framework of topcolor-assisted technicolor model we calculate the contributions from thc pseudoGoldstone bosons and new gauge bosons to e+e- → tt. We find that for reasonable ranges of the parameters, thepseudo Goldstone bosons afford dominate contribution, the correction arising from new gauge bosons is negligibly small,the maximum of the relative corrections is ~ 10% with the center-of-mass energy s = 500 GeV; whereas in the cascof s = 1500 GeV, the relative corrections could be up to 16%. Thus large new physics might be observablc at theexperiments of next-generation linear colliders.展开更多
A new mechanism to introduce the mass of U(1) gauge field in supersymmetric U(1) gauge theory is discussed.The model has the strict local U(1) gauge symmetry and supersymmetry.Because we introduce two vector superfie...A new mechanism to introduce the mass of U(1) gauge field in supersymmetric U(1) gauge theory is discussed.The model has the strict local U(1) gauge symmetry and supersymmetry.Because we introduce two vector superfields simultaneously,the model contains a massive U(1) gauge field as well as a massless U(1) gauge field.展开更多
文摘In the framework of topcolor-assisted technicolor model we calculate the contributions from thc pseudoGoldstone bosons and new gauge bosons to e+e- → tt. We find that for reasonable ranges of the parameters, thepseudo Goldstone bosons afford dominate contribution, the correction arising from new gauge bosons is negligibly small,the maximum of the relative corrections is ~ 10% with the center-of-mass energy s = 500 GeV; whereas in the cascof s = 1500 GeV, the relative corrections could be up to 16%. Thus large new physics might be observablc at theexperiments of next-generation linear colliders.
文摘A new mechanism to introduce the mass of U(1) gauge field in supersymmetric U(1) gauge theory is discussed.The model has the strict local U(1) gauge symmetry and supersymmetry.Because we introduce two vector superfields simultaneously,the model contains a massive U(1) gauge field as well as a massless U(1) gauge field.