Higgs Boson(S) and Supersymmetry

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Higgs Boson(s) and Supersymmetry Quantum Electrodynamics • Mass for the photon forbidden (gauge invariance). • Mass for the electron allowed. Anomalous magnetic moment of the electron: D. Hanneke et.al. (2011) M. Hayakawa Weak Interactions • Still cannot give mass to the gauge boson B, thus, neither to the Z gauge boson! • Cannot write a mass term for the electron neither, due to the splitting between the left and right component. • Need Brout-Englert-Higgs mechanism. Higgs Mechanism It does not explain why the masses are so different. Simultaneous work: Englert y Brout. Higgs Potential The field must have spin 0, and a non-zero vacuum expectation value. Buttazzo et.al. (2013) But, lifetime of meta-stable vacuum is very large! Higgs Boson It is well established the existence of a scalar with Standard Model couplings and a mass ≈ 125 GeV. Evidence points to spin cero and couplings to fermions as well as gauge bosons. Supersymmetry Neutralino Gravitino SM MSSM Rp Conserving Rp Violating Dark Matter De Boer et.al. (2004) Supersymmetric Searches Squarks, sleptons, and gluinos seem to be heavier than ~1 TeV. Mysteries Triple Higgs coupling: • ããbb-bar channel. • hhh in SM is too low to be seen by the LHC. • Hhh in 2HDM may be seen (excess?). • arXiv:1406.5053 CMS and LHCb observe the rare decay BS to mu mu (arXiv:1411.4413). ~2.5 σ (CMS PAS HIG-14-005) B(B→μμ) / B(BS→μμ) too large! Heavy squarks and gluinos and low tan(β) (arXiv:1501.02044)? Heavy Supersymmetry Split Supersymmetry hep-th/0405159, hep-ph/0406088 High Scale Supersymmetry • Gauge coupling unification • All supersymetry partners are heavy. • Higgs boson SM-like • Plot taken from arXiv:1112.3028 • Partial Split Susy: also neutrino masses from RpV (hep-ph/0605285). Intermediate Scale Supersymmetry Hall et.al. • Quartic Higgs coupling tends to zero at high scales. • Gauge coupling unification. • tan(beta) near unity. Conclusions • Discovered particle in 2012 looks like the Standard Model Higgs boson. • Mysteries and unexplained excesses are seen. Next data will tell. • Heavy Supersymmetry is a way to explain many shortcomings of the SM. Next data also will tell. .

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Higgs Bosons and Supersymmetry
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