Manifestation of a singlet heavy up-type quark in the branching ratios of rare decays K to πν\barν, B to πν\barν and B to K ν\barν

Abstract

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 πν\barν, B to πν\barν and B to K ν\barν 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.

13 pages, 3 figures. Submitted to the JETP Letters. A reference added, minor typos corrected

References in corpus (6)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Is Vtb=1 ?
• Probing Minimal Flavor Violation at the LHC
• Constraints on New Physics from $K\to \pi \nu \bar{\nu }$
• New (virtual) Physics in the Era of the LHC

Cited by in corpus (6)

• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• Vector-like Singlet Quarks: a Roadmap
• The Hunt for New Physics in the Flavour Sector with up vector-like quarks
• Small violations of unitarity, the phase in Bs mixing and visible t->cZ decays at the LHC
• Vector-like Quarks at the Origin of Light Quark Masses and Mixing
• Decays of the Heavy Top and New Insights on ${\epsilon }_K$ in a one-VLQ Minimal Solution to the CKM Unitarity Problem