BSM Higgs II
- Natascia Vignaroli (Michigan State University)
Jiayin Gu (UC Davis)
Within composite Higgs models based on the top seesaw mechanism, we show that the Higgs field can arise as the pseudo Nambu-Goldstone boson of some broken larger symmetry group. As a result, the lightest CP-even neutral state of the composite scalar sector is lighter than the top quark, and can be identified as the newly discovered Higgs boson. We present two such models. The first one has...
Amarjit Soni (BNL)
The key question after the LHC discovery of the 126 GeV scalar will be addressed by using insight from a geometric theory of flavor. In this construction a new mechanism that simultaneously triggers EW symmetry breaking and stabilizes the 5th dimension through the use of a doublet (see arXiv:1312.3331) will be discussed. In this interpretation the observed scalar is actually a...
Kathryn (Katy) Hartling (C)
We study the most general scalar potential of the Georgi-Machacek model, which adds isospin-triplet scalars to the Standard Model (SM). We show that this model possesses a decoupling limit, in which the predominantly-triplet states become heavy and degenerate while the couplings of the remaining light neutral scalar approach those of the SM Higgs boson. We find that the SM-like Higgs boson...
Bryan Ostdiek (University of Notre Dame)
The observation of the Higgs boson with a mass of 126 GeV is in tension with natural MSSM scenarios. Such a Higgs mass requires heavy third-generation squarks which reintroduces fine-tuning. Having a minimal model can be dropped in favor of naturalness. One such example is to add an $SU(2)_L$ triplet, hypercharge $Y=0$ chiral superfield to the MSSM. In this talk I will summarize recent work...
Dr Travis Martin (TRIUMF)
Little Higgs models are generally highly constrained by precision electroweak measurements, and the recent Higgs data does not appear to further constrain the parameter space. The bestest little Higgs model, with its tongue-in-cheek name, is designed to be less constrained by electroweak measurements, and thus may be sensitive to the Higgs results. I will discuss this model in light of the...
AJINKYA KAMAT (University of Virginia)
A model of electroweak-scale right-handed neutrino (EW$\nu_R$) model was put forward a few years ago, in which the right-handed neutrinos are members of mirror fermion weak doublets and where the Majorana masses of the right-handed neutrinos are found to be naturally of the order of the electroweak scale [P.Q.Hung, Phys. Lett. B. 249 (2007)]. This model contains, in addition to the mirror...
Jessica Goodman (The Ohio State University)
Low energy supersymmetry (SUSY) has long been one of the most elegant frameworks for solving the hierarchy problem and extending the Standard Model (SM) beyond the electroweak scale. However the LHC has found no evidence for the existence of SUSY pushing the bounds on squark and gluino masses above $1$TeV in the simplest models. Thus it becomes necessary to consider models beyond the...