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Why should we care about the top quark Yukawa coupling?

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arxiv 1411.1923 v2 pith:UDEDESSD submitted 2014-11-07 hep-ph astro-ph.COhep-th

Fedor Bezrukov , Mikhail Shaposhnikov This is my paper · ORCID
classification hep-phastro-ph.COhep-th
keywords scalecouplingquarkyukawacritexperimentalmeasurementsphysics
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

In the cosmological context, for the Standard Model to be valid up to the scale of inflation, the top quark Yukawa coupling $y_t$ should not exceed the critical value $y_t^{crit}$, coinciding with good precision (about 0.02%) with the requirement of the stability of the electroweak vacuum. So, the exact measurements of $y_t$ may give an insight on the possible existence and the energy scale of new physics above 100 GeV, which is extremely sensitive to $y_t$. We overview the most recent theoretical computations of $y_t^{crit}$ and the experimental measurements of $y_t$. Within the theoretical and experimental uncertainties in $y_t$ the required scale of new physics varies from $10^7$ GeV to the Planck scale, urging for precise determination of the top quark Yukawa coupling.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 139 citations worldwide. Full citation record

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