TY - JOUR
T1 - Probing Dynamical Symmetry Breaking Using Top Quark
AU - Asaka, Takehiko
AU - Shobuda, Yoshihiro
AU - Maekawa, Nobuhiro
AU - Moroi, Takeo
AU - Sumino, Yukinari
PY - 1996
Y1 - 1996
N2 - We report our study on probing dynamical symmetry breaking physics using top quark. We assume (i)technicolor-like scenario for inducing W mass, and (ii)an effective 4-fermi interaction for inducing top mass. With these minimal assumptions, we obtain lower bound for the strength G and the upper bound for the intrinsic mass scale M of the 4-fermi interaction (ii), as we vary the interaction (i). We find that the coupling is strong, G/4π ∼ script O sign(1). From the tree-level unitarity constraint it is suggested that M should be of the order of ΛTC ≃ 1 ∼ 2 TeV or less. We also study the consistency with the present T parameter data, and obtain another upper bound for M. Using the obtained result, we estimate the non-standard-model correction to the polarized cross section for γγ → t̄t at script O sign(G). e.g. The correction exceeds 8% at √s = 1 TeV for the case NTC = 3.
AB - We report our study on probing dynamical symmetry breaking physics using top quark. We assume (i)technicolor-like scenario for inducing W mass, and (ii)an effective 4-fermi interaction for inducing top mass. With these minimal assumptions, we obtain lower bound for the strength G and the upper bound for the intrinsic mass scale M of the 4-fermi interaction (ii), as we vary the interaction (i). We find that the coupling is strong, G/4π ∼ script O sign(1). From the tree-level unitarity constraint it is suggested that M should be of the order of ΛTC ≃ 1 ∼ 2 TeV or less. We also study the consistency with the present T parameter data, and obtain another upper bound for M. Using the obtained result, we estimate the non-standard-model correction to the polarized cross section for γγ → t̄t at script O sign(G). e.g. The correction exceeds 8% at √s = 1 TeV for the case NTC = 3.
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U2 - 10.1143/PTPS.123.151
DO - 10.1143/PTPS.123.151
M3 - Article
AN - SCOPUS:0030519291
SP - 151
EP - 161
JO - Progress of Theoretical Physics Supplement
JF - Progress of Theoretical Physics Supplement
SN - 0375-9687
IS - 123
ER -