Natural NMSSM with a Light Singlet Higgs and Singlino LSP

Supersymmetry (SUSY) is an attractive extension of the Standard Model (SM) of particle physics which solves the SM hierarchy problem. Motivated by the theoretical $\mu$-term problem of the Minimal Supersymmetric Model (MSSM), the Next-to MSSM (NMSSM) can also account for experimental deviations from the SM like the anomalous muon magnetic moment and the dark matter relic density. Natural SUSY, motivated by naturalness considerations, exhibits small fine tuning and a characteristic phenomenology with light higgsinos, stops and gluinos. We describe a scan in NMSSM parameter space motivated by Natural SUSY and guided by the phenomenology of an NMSSM with a slightly broken Peccei-Quinn symmetry and a lightly coupled singlet. We identify a scenario which survives experimental constraints with a light singlet Higgs and a singlino lightest SUSY particle. We then discuss how the scenario is not presently excluded by searches at the Large Hadron Collider (LHC) and which channels are promising for discovery at the LHC and International Linear Collider.Comment: Added results of checks on LHC Run 1 exclusion with CheckMAT

ATLAS Searches for Beyond the Standard Model Higgs Bosons

The present status of ATLAS searches for Higgs bosons in extensions of the Standard Model (SM) is presented. This includes searches for the Higgs bosons of the Two-Higgs-Doublet Model (2HDM), the Minimal Supersymmetric Model (MSSM), the Next-to-Minimal Supersymmetric Model (NMSSM) and models with an invisibly decaying Higgs boson. A review of the phenomenology of the Higgs sectors of these models is given together with the search strategy and the resulting experimental constraints.Comment: Presentation at the DPF 2013 Meeting of the American Physical Society Division of Particles and Fields, Santa Cruz, California, August 13-17, 201

Design details for helium heater

Design calculations for helium heate

A Tale of Three Northern Manhattan Communities: Case Studies of Political Empowerment in the Planning and Developing Process

This article reviews three development proposals in Northern Manhattan communities, how community boards responded to those proposals, and how the responses affected the outcome of each development. The article begins with a broad overview of the history of community boards\u27 role in urban planning in New York City. It finds that boards have become increasingly influential in new development plans, empowering the communities they represent. The Article goes on to analyze three recent proposals in turn (an expansion of Columbia University in Morningside Heights, a residential development in Central Harlem, and a comprehensive rezoning of East Harlem) according to zoning, community reaction, and result. It concludes that by proactively pushing for rezoning and hiring Civitas Citizens, Inc., an urban design, community advocacy organization to oversee a rezoning plan, the community board of East Harlem was able to take control of preserving the character of its neighborhood

Anomalous Supercurrent from Majorana States in Topological Insulator Josephson Junctions

We propose a Josephson junction setup based on a topological insulator (TI) thin film to detect Majorana states, which exploits the unique helical and extended nature of the TI surface state. When the magnetic flux through the junction is close to an integer number of flux quanta, Majorana states, present on both surfaces of the film, give rise to a narrow peak-dip structure in the current- phase relation by hybridizing at the edge of the junction. Moreover, the maximal Majorana-state contribution to Josephson current takes a (nearly) universal value, approximately equal to the supercurrent capacity of a single quantum-channel. These features provide a characteristic signature of Majorana states based entirely on supercurrent.Comment: 6 pages, 5 figure