Conveners
Beyond the Standard Model II
- John Ralston (University of Kansas)
We will describe the sensitivities to quartic photon anomalous couplings at the LHC in the diphoton, photon+Z, WW channels at the LHC leading to unprecedented sensitivities. We will also describe the sensitivities to axion-like particles at high mass at the LHC in the same channel.
We show that within the two Higgs doublet model (T2HDM), where both Higgs doublet couple to fermions in a same hierarchical pattern, there can be significant deviations in the Higgs-fermion couplings with respect to their respective standard model values, consistent with flavor constraints and known properties of the Higgs boson. The model is very predictive, implying unavoidable new physics...
To accommodate new physics like the tiny neutrino masses and dark matter, the standard model gauge group can be extended by an extra U(1) or by constructing left-right symmetric models at higher energies. However, the gauge couplings in these beyond the standard model gauge groups can not be arbitrarily large and/or small. Assuming the new physics emerges at the few-TeV scale and requiring...
Particle physics models with Peccei-Quinn (PQ) symmetry breaking as a consequence of supersymmetry (SUSY) breaking are attractive in that they solve the strong CP problem with a SUSY DFSZ-like axion, link the SUSY breaking and PQ breaking intermediate mass scales and can resolve the SUSY µ problem with a naturalness-required weak scale µ term whilst soft SUSY breaking terms inhabit the...
The values of fundamental physical constants are crucial for testing current theories and their possible extensions. It is not widely appreciated that determining the constants is quite sensitive to how data and theory are selected, and how theoretical and experimental uncertainties are treated. There exists no universal definition of the “best” procedures or constants. Procedures dedicated to...
