Topcolor assisted technicolor models and muon anomalous magnetic moment
نویسندگان
چکیده
We discuss and estimate the contributions of the new particles predicted by topcolor assisted technicolor(TC2) models to the muon anomalous magnetic moment aμ. Our results show that the contributions of Pseudo Goldstone bosons are very small which can be safely ignored. The main contributions come from the ETC gauge boson xμ and topcolor gauge boson Z ′. If we demand that the mass of Z ′ is consistent with other experimental constrains, its contributions are smaller than that of xμ. With reasonable values of the parameters in TC2 models, the observed BNL results for aμ could be explained. PACS number(s): 12.26NZ, 14.60.Ef, 13.40.Em ∗E-mail:[email protected]
منابع مشابه
Top Decay in Topcolor-Assisted Technicolor
Conventional technicolor models with light charged technipions (π T ) lead to an unacceptably large contribution to t → π T b decay rate. Topcolor-assisted technicolor models also have additional PGBs called top-pions (π t ) which may contribute to this decay. We study the potentially dangerous mixing of charged top-pion and technipions in toy models of ‘natural’ topcolor-assisted technicolor. ...
متن کاملProgress on Symmetry Breaking and Generational Mixing in Topcolor-assisted Technicolor
Topcolor-assisted technicolor provides a dynamical explanation for electroweak and flavor symmetry breaking and for the large mass of the top quark without unnatural fine tuning. I briefly review the basics of topcolor-assisted technicolor, including major constraints and a general approach to satisfying them. The main challenge to topcolor-assisted technicolor is to generate the observed mixin...
متن کاملAnatomy of Top - Mode Extended Technicolor Model ∗
We analyze a straightforward extension of the extended technicolor (ETC) incorporating the top quark condensate via the flavor-universal coloron type topcolor SU(3)1 × SU(3)2 as well as the walking/conformal technicolor. Having quarks and techniquarks assigned to a single SU(3)1, the model has the same ETC structure as that of Appelquist et al. which was shown to have successive ETC breakings t...
متن کاملMuon anomalous magnetic moment in string inspired extended family models
We propose a standard model minimal extension with two lepton weak SU(2) doublets and a scalar singlet to explain the deviation of the measured anomalous magnetic moment of the muon from the standard model expectation. This scheme can be naturally motivated in string inspired models such as E6 and AdS/CFT. E-mail: [email protected] E-mail: [email protected] 1 The recent ...
متن کاملTopcolor Assisted Technicolor
A condensate, tt, arising from O(TeV ) scale “topcolor,” in addition to technicolor (and ETC) may naturally explain the gauge hierarchy, the large top quark mass, and contains a rich system of testable consequences. A triplet of strongly coupled pseudo–Nambu–Goldstone bosons, “toppions,” near the top mass scale is a generic prediction of the models. A new class of technicolor schemes and associ...
متن کامل