electroweak phase transition s and higgs couplings
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ELECTROWEAK PHASE TRANSITION S AND HIGGS COUPLINGS Patrick Meade - PowerPoint PPT Presentation

ELECTROWEAK PHASE TRANSITION S AND HIGGS COUPLINGS Patrick Meade C.N. Yang Institute for Theoretical Physics Stony Brook University Based mostly on PM, H. Ramani 1807.07578 PM. S. Homiller 1808/9.xxxxx David Curtin, PM, H. Ramani 1612.00466


  1. ELECTROWEAK PHASE TRANSITION S AND HIGGS COUPLINGS Patrick Meade C.N. Yang Institute for Theoretical Physics Stony Brook University Based mostly on PM, H. Ramani 1807.07578 PM. S. Homiller 1808/9.xxxxx David Curtin, PM, H. Ramani 1612.00466

  2. MOTIVATION… Why do I care about the early universe and the Higgs and not DM for instance?

  3. MOTIVATION…

  4. MOTIVATION… “It doesn’t seem like there’s anything interesting in pheno lately. Maybe Neutrinos?” L. Alvarez-Gaume (Simons Center for Geometry & Physics director at Stony Brook) my atavistic pheno impulse is to give a panglossian view of our field: “X,Y, and Z are being done, amazing new possibilities”

  5. DATA/REALITY DRIVEN VIEW: 6000 5000 4000 [ µ K 2 ] 3000 D TT � 2000 1000 0 600 60 300 30 ∆ D TT � 0 0 -30 -300 -60 -600 2 10 30 500 1000 1500 2000 2500 � Fig. 1. Planck 2015 temperature power spectrum. At multipoles ` ≥ 30 we show the maximum likelihood frequency-averaged temperature spectrum computed from the Plik cross-half-mission likelihood, with foreground and other nuisance parameters de- termined from the MCMC analysis of the base Λ CDM cosmology. In the multipole range 2 ≤ ` ≤ 29, we plot the power spectrum estimates from the Commander component-separation algorithm, computed over 94 % of the sky. The best-fit base Λ CDM theoreti- cal spectrum fitted to the Planck TT + lowP likelihood is plotted in the upper panel. Residuals with respect to this model are shown in the lower panel. The error bars show ± 1 � uncertainties. No clear sign of any deviations, or where to even test??

  6. BY AND LARGE WE STILL HAVE ALL THE SAME PROBLEMS WE’VE HAD FOR DECADES • Hierarchy Problem • Dark Matter • Matter anti-Matter asymmetry • Neutrino Mass origin • Strong CP problem • Flavor • Number of generations • Apparent Unification of Coupling Constants • Inflation • Reheating • Unification with Gravity • Cosmological Constant Problem

  7. EXPERIMENT TO THE RESCUE?

  8. THERE IS PROGRESS EXPERIMENTALLY! FIG. 4: Ideas to probe low-mass DM via scattering o ff , or absorption by, nuclei (NR) or electrons (ER). “Dark Sectors” abound… just ask Howie

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  11. LAMPPOST EFFECT Not just limited to Dark Matter of course

  12. WHY NO NOBEL FOR INFLATION? Inflation!

  13. WHY NO NOBEL FOR INFLATION? We don’t know when it happened to better than ~15 orders of magnitude!!!

  14. LAMPPOST EFFECT I’m not a wise professor nor lucky, so…

  15. LAMPPOST EFFECT Is there a confluence of a lamppost and a theory motivation ?

  16. Higgs Lamp

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