English

Decadal Mission for the New Physics Higgs/Flavor Era

High Energy Physics - Phenomenology 2022-04-06 v1 High Energy Physics - Experiment

Abstract

The LHC has not discovered any New Physics beyond the anticipated h(125)h(125) boson, and new ideas abound for out-of-the-box searches, or Effective Field Theories with multi-TeV cutoff. But, have we exhausted dimension-4 operators involving sub-TeV particles that are {\it not} exotic (non-XLP)? We advocate the existence of an extra Higgs doublet that carry extra Weinberg couplings, where {\it emergent} mass-mixing hierarchies {\it and} alignment have hidden their effects very well so far. O(1){\cal O}(1) Higgs quartics can induce first order electroweak phase transition and imply sub-TeV H,A,H±H, A, H^\pm spectrum. The extra Weinberg couplings, led by ρtt\rho_{tt} and ρtc\rho_{tc} at O(1){\cal O}(1), can drive electroweak baryogenesis, while ρee/ρttλe/λt|\rho_{ee}/\rho_{tt}| \propto \lambda_e/\lambda_t, the ratio of usual electron and top Weinberg couplings, can tame electron EDM. Finding these extra Higgs bosons via cgtH/Attcˉcg \to tH/A \to tt\bar c, tttˉtt\bar t and cgbH+btbˉcg \to bH^+ \to bt\bar b processes (and those allowed by Higgs boson splittings) at the LHC, and pushing the flavor frontier to break the flavor code, would usher in a new Higgs/flavor era. A new scale at 10--20 TeV, possibly related to the Landau pole of the scalar sector, may emerge.

Keywords

Cite

@article{arxiv.2109.02557,
  title  = {Decadal Mission for the New Physics Higgs/Flavor Era},
  author = {Wei-Shu Hou},
  journal= {arXiv preprint arXiv:2109.02557},
  year   = {2022}
}

Comments

18 pages, 9 figures, invited review to be submitted to Chinese Journal of Physics