NICPB Tallinn 01122022 Dark Matters 2022 1 210201084 hep ph 220100824 hep ph 220401744 hep ph Work in progress Outline Explain hierarchies in physics scales absence of NP at the LHC with ID: 1045510
Download Presentation The PPT/PDF document "Multi-phase criticality Martti Raidal" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
1. Multi-phase criticalityMartti RaidalNICPB, Tallinn01.12.2022Dark Matters 202212102.01084 [hep-ph]2201.00824 [hep-ph]2204.01744 [hep-ph]Work in progress
2. OutlineExplain hierarchies in physics scales (absence of NP at the LHC) with:Multi-phase criticality and Coleman-Weinberg mechanismFreeze-out in DM induced multi-phase dynamical symmetry breakingFreeze-in in DM induced multi-phase dynamical symmetry breakingConclusions01.12.2022Dark Matters 20222
3. Classically scale invariant Higgs-Dilaton modelPhasePhase Phase Multi-phase criticality: masses and mixings vanish 01.12.2022Dark Matters 20223
4. CW mechanism and multi-phase criticalityDynamical symmetry breaking around the MP criticality: GW not good01.12.2022Dark Matters 20224𝜷-function suppressed𝜷-function suppressed𝜷-function suppressedFor small couplings the CW must be treated with better precision than the Gildener-Weinberg approximation
5. The origin of the effectArrange tree-level Gildener-Weinberg flat direction along the s-axisQuantum effects bend the flat direction to a bananaUsually this is just neglected small effectDue to the multi-phase criticality, the EW scale is loop suppressed01.12.2022Dark Matters 20225
6. CommentsIn realistic models couplings never run to zero at the same scale:Small quartic couplings: inflaton 𝜆<10-12, Higgs 𝜆(1010GeV), freeze-inTop Yukawa affects perpendicular direction of the flat directionIn realistic models one need more scalar couplings to have dynamical symmetry breaking along the multi-phase criticality direction01.12.2022Dark Matters 20226
7. DM induced multi-critical dynamical symmetry breakingThe scalar model: the Higgs, a dilaton and scalar DM01.12.2022Dark Matters 20227Scalar DM must be heavy, the dilaton can be heavier or lighter than the Higgs bosonOne scale w
8. DM freeze out in this model01.12.2022Dark Matters 20228
9. DM freeze out in the Gildener-Weinberg limit01.12.2022Dark Matters 20229
10. DM freeze-in in the multi-critical frameworkAll scalar couplings, except the Higgs quartic, must be super smallCriticality naturally embedded:A possibility: introduce RH neutrinos NNeutrino masses and leptogenesis coming from the same framework01.12.2022Dark Matters 202210
11. DM induced CW and freeze-in results01.12.2022Dark Matters 202211Dilaton never thermalizes
12. DM induced hierarchy in scales01.12.2022Dark Matters 202212
13. ConclusionsMulti-phase criticality combines “small” and “large” scalar couplingsThe scalar DM is heavy, it triggers the CW and the loop-suppressed EW scaleHuge but technically natural hierarchy between the EW and DM scalesNeutrino masses and leptogenesis may be obtained in a standard wayThis scenario predicts one more light scalar, the dilaton, which may be lighter or heavier than the SM Higgs boson. 01.12.2022Dark Matters 202213