Journal Club

Seminar Room

Monday 18th of March, 2019

 

Scalar Democracy

Christopher T. Hill, Pedro A. N. Machado, Anders E. Thomsen, Jessica Turner
(Submitted on 19 Feb 2019)
We conjecture that there exists a scalar bound state for every pair of fundamental fermions at a UV (`composite') scale, Λ≫vweak. This implies a large number of universally coupled, sub-critical Higgs doublets. All but the Standard Model Higgs are `dormant,' with large positive squared masses and each receives a small vacuum expectation values via mixing with the Standard Model Higgs. Universal couplings, modulo renormalization group running effects, flips the flavor problem into the masses and mixings of the Higgs system. Doublets associated with heavy fermion masses, b,c,τ likely lie in the multi-TeV range, but may be observable at the current LHC, or a high-luminosity and/or an energy-upgraded LHC. In the lepton sector we are lead to a Higgs seesaw for neutrino masses, and corollary processes of observable flavor violation. The observation of the first sequential doublet coupled to b¯b with masses ≲3.5 TeV would lend credence to the hypothesis.
Comments: 21 pages, 7 figures, 4 tables
Subjects: High Energy Physics - Phenomenology (hep-ph)
Report number: FERMILAB-PUB-19-068-T, CP3-Origins-2019-003 DNRF90
Cite as: arXiv:1902.07214 [hep-ph]
  (or arXiv:1902.07214v1 [hep-ph] for this version)

Presented by M Masip