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arXiv · hep-ph/9409240

$b \to s(d) γ$ with a Vector-like Quark as Fourth-generation

L. T. Handoko·T. Morozumi Pages·:·19 pages
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Abstract

We study the implications of a vector-like quark, especially a down-type vector-like quark in $b \rightarrow s(d) γ$ including the neutral Higgs in the calculation. After analyzing some possible constraints for the mixing, the contribution may be significant for the $b \rightarrow d γ$, but not for the $b \rightarrow s γ$. We also find that the FCNC among ordinary quarks vanishes for a special form of down-type quark mass matrix.

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L. T. Handoko, T. Morozumi Pages, :, 19 pages. 1995-01-31. $b \to s(d) γ$ with a Vector-like Quark as Fourth-generation. https://doi.org/10.1142/s021773239500034x

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