Bulletin of the American Physical Society
2013 Annual Meeting of the California-Nevada Section of the APS
Volume 58, Number 14
Friday–Saturday, November 1–2, 2013; Rohnert Park, California
Session C3: High Energy and Accelerator Physics |
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Chair: Matthew Thompson, Tri Alpha Energy Room: Darwin 37 |
Friday, November 1, 2013 2:00PM - 2:24PM |
C3.00001: Albert Einstein's Impact on Accelerators and on the World Claudio Pellegrini, Andrew Sessler The impact of Albert Einstein's 1905 papers on physics is discussed from the viewpoint of an accelerator physicist. The impact on the world is also discussed, looking at his activities as a pacifist and a humanitarian. The last part of the talk includes his views on atomic bombs and arms control, social justice, anti-racism and civil rights. [Preview Abstract] |
Friday, November 1, 2013 2:24PM - 2:36PM |
C3.00002: Field localization and Nambu Jona-Lasinio mass generation mechanism in an alternative 5-dimensional brane model Preston Jones, Doug Singleton, Gerardo Munoz, Triyanta Triyanta We consider a 5-dimensional brane world model with a single brane which is distinct from the well known Randall-Sundrum model. We discuss the similarities and differences between our brane model and the Randall-Sundrum brane model. In particular we focus on the localization of 5D fields with different spins -- spin 0,spin 1/2, spin 1 -- to the brane, and a self-consistent mass generation mechanism. We find that the brane model studied here has different (and in some cases superior) localization properties for fields/particles with different spins to the brane, as compared to the original 5-dimensional brane models. In addition this alternative 5D brane model exhibits a self generation mechanism which recalls the self-consistent approach of Nambu and Jona-Lasinio. arXiv:1307.3599v1. [Preview Abstract] |
Friday, November 1, 2013 2:36PM - 2:48PM |
C3.00003: Effective WIMPs Jeff Hutchinson, Spencer Chang, Ralph Edezhath, Markus Luty Null results from collider and direct detection searches constrain dark matter candidates. We analyze these constraints in the context of minimal extensions to the Standard Model (SM). The ``WIMP miracle'' for the relic abundance of thermal dark matter motivates models of weak scale dark matter with renormalizable couplings to SM particles. These models contain a singlet dark matter particle with cubic couplings between SM particles and ``partner'' particles with the same gauge quantum numbers as the SM particle. We focus on the case of dark matter interactions with colored particles. Within this framework, we consider models where the dark matter is a scalar boson, fermion, or vector boson, and may or may not be its own antiparticle. We find that collider and direct detection searches are remarkably complementary for these models. Direct detection limits for the cases where the dark matter is not its own antiparticle require dark matter masses to be in the multi-TeV range, where they are extremely difficult to probe in collider experiments. The models where dark matter is its own antiparticle are constrained by direct detection near the degenerate limit and elsewhere by the collider searches for monojet and jets + MET signals. [Preview Abstract] |
Friday, November 1, 2013 2:48PM - 3:00PM |
C3.00004: Searching for Dark Matter Axions with ADMX and ADMX-HF Gianpaolo Carosi The axion is a neutral pseudoscalar boson predicted to exist as a consquence of the Peccei-Quinn solution to the Strong-CP problem. Axions with masses between $\mu$eV - meV are also a natural dark matter candidate. The Axion Dark Matter Experiment (ADMX) searches for dark matter axions by looking for their resonant conversion to detectable photons via the Primakoff Effect in a microwave cavity immersed in a strong static magnetic field. Here I will briefly discuss the progress on construction of the upgraded ADMX and ADMX-High Frequency experiments at the University of Washington and Yale University, respectively. In addition I will present on progress towards higher quality factor cavities based on superconducting thin film coatings which may benefit both experiments. [Preview Abstract] |
Friday, November 1, 2013 3:00PM - 3:12PM |
C3.00005: Measurements of the Electric Field in a Resonant Microwave Cavity for Dark Matter Axion Searches Jaben Root The Axion Dark Matter Experiment at High Frequency (ADMX HF) is an experiment in search for the Axion, a highly motivated dark matter candidate. The Axion can be measured by looking for its conversion to detectable microwave photons in a resonant microwave cavity that is in the presence of a large magnetic field. The power generated from axion-photon conversions in the cavity is a function of the electric field structure of the particular mode that the cavity is tuned to. Here I will present on techniques to directly measure the electric field of a microwave cavity by perturbing it with a small dielectric bead (also known as a ``bead-pull'' measurement) and comparing it with the natural resonant frequency. These results can be compared directly to expected field patterns from simulation. I also will present on plans for future measurements of cavities with tuning rods to measure mode localizations near the TM010 and higher order modes. [Preview Abstract] |
Friday, November 1, 2013 3:12PM - 3:24PM |
C3.00006: Detector R{\&}D for Free and Bound Neutron Oscillation and Annihilation at NNbarX Jeff C. Guevara, Kenneth S. Ganezer, Jim Hill, Brandon Hartfiel, Melissa Blacketer, Jose Venegas The NNbarX experiment is proposed to search for free neutron-antineutron oscillations using ultra-cold neutrons from a spallation (particle collisions on heavy nuclei) source at the Fermi National Accelerator Laboratory (Fermilab). Currently the CSUDH sub-group of the NNbarX Collaboration is working on simulations of free and bound neutron oscillations in several planned experiments involving oxygen, carbon, and liquid argon to help fix the design of the detectors, the experimental configuration, and the initial data selection criteria for NNbarX. CSUDH undergraduate students working on this project over the summer used a simulation program originally developed for nucleon event tracking for neutron-antineutron oscillations at Super-K I and modified it for use in NNbarX. When construction of the experiment is finished in 2021, it will be able to confirm or rule out the leading theories of grand unification; these include models with the seesaw mechanism, right-left symmetry, supersymmetry (SUSY), and strings. [Preview Abstract] |
Friday, November 1, 2013 3:24PM - 3:36PM |
C3.00007: CUORE: The Search for Neutrinoless Double Beta Decay -- Student Work Andrew Bianco, John Sekerak, Thomas Gutierrez One of the most important problems in physics today is determining the quantum nature of the neutrino. The underground research experiments CUORE and CUORE-0 do this by attempting to detect neutrinoless double beta decay in 130Te, which would demonstrate the neutrino is its own antiparticle. CUORE is a collaborative American and Italian experiment located at the Gran Sasso National Laboratory in Assergi, Italy. Cal Poly students traveled to Gran Sasso in the summer of 2013 to assist researchers with CUORE assembly, equipment upkeep, cleaning, and experimental shifts for CUORE-0. An overview and progress report for CUORE and CUORE-0 actives will be presented. The work is supported by NSF PHY-0969852. [Preview Abstract] |
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