Rare decay of the top quark t{yields}cll and single top quark production at the ILC
- Department of Physics, Concordia University, 7141 Sherbrooke Street West, Montreal, Quebec, H4B 1R6 (Canada)
We perform a complete and detailed analysis of the flavor changing neutral current rare top quark decays t{yields}cl{sup +}l{sup -} and t{yields}c{nu}{sub i}{nu}{sub i} at one-loop level in the standard model, two Higgs doublet models (I and II), and in minimal supersymmetric standard model (MSSM). The branching ratios are very small in all models, O(10{sup -14}), except for the case of the unconstrained MSSM, where they can reach O(10{sup -6}) for e{sup +}e{sup -}, {mu}{sup +}{mu}{sup -}, and {nu}{sub i}{nu}{sub i}, and O(10{sup -5}) for {tau}{sup +}{tau}{sup -}. This branching ratio is comparable to the ones for t{yields}cV, cH. We also study the production rates of single top and the forward-backward asymmetry in e{sup +}e{sup -}{yields}tc and comment on the observability of such a signal at the International Linear Collider.
- OSTI ID:
- 20871299
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 74, Issue 7; Other Information: DOI: 10.1103/PhysRevD.74.073014; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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