Manifestation of a singlet heavy up-type quark in the branching ratios   of rare decays K to \pi \nu \bar{\nu}, B to \pi \nu \bar{\nu} and B to K \nu   \bar{\nu}
  We investigate the implications of the model with a SU(2)-singlet up-type quark, heavy enough not to be produced at the LHC, namely, the contribution of the new quark to the branching ratios of the K to \pi \nu \bar{\nu}, B to \pi \nu \bar{\nu} and B to K \nu \bar{\nu} decays. We show that the deviation from the Standard Model can be up to 10% in the case of a 5 TeV quark. Precise measurements of these branching ratios at the future experiments will allow to observe the contributions of the new quark or to impose stronger constraints on its mass. 
P. N. Kopnin (1 and 2), M. I. Vysotsky (1) ((1) Institute for   Theoretical and Experimental Physics, (2) Moscow Institute o...