Bulletin of the American Physical Society
Joint Spring 2013 Meeting of the Texas Sections of the APS and AAPT and Zone 13 of the SPS
Volume 58, Number 3
Thursday–Saturday, April 4–6, 2013; Stephenville, Texas
Session B1: High Energy Physics I |
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Chair: Jimmy J. McCoy, Tarleton State University Room: Science Builiding 102 |
Friday, April 5, 2013 11:00AM - 11:12AM |
B1.00001: Detector Design Studies for High Precision Particle Physics Experiment Timothy Watson, Samantha Lacombe, Amit Bashyal, Yvonne Ying High-energy physics is the field of physics utilizing powerful high-energy particle accelerators to probe and understand the fundamental particles of nature and the forces between them. Among the great accomplishments of the field of particle physics is a theoretical model that explains many of the phenomena we see in our universe: the Standard Model. While the Standard Model has been very successful in describing nature, it is necessary to push the limits of this model in an effort to truly understand its predictability. This search for new physics beyond the Standard Model requires the construction of next generation particle detectors capable of extreme high-precision measurements. The ORKA experiment, currently in the proposal stage, will search for rare kaon decays that may contradict Standard Model predictions and presents a paradigm changing new physics. In this talk, I will outline in detail design studies for the range stack, an essential detector component UTA is responsible for, incorporating novel components, specifically silicon photomultipliers (SiPMs) in place of photomultiplier tubes (PMTs) and the Gas Electron Multiplier (GEM) technology. [Preview Abstract] |
Friday, April 5, 2013 11:12AM - 11:24AM |
B1.00002: Clarifying the Structure of the Nucleon: Status of the SeaQuest Experiment (Fermilab E906) Larry Donald Isenhower SeaQuest (Fermilab E906) will make a number of measurements in kinematic ranges with a precision that have not been possible in previous experiments. It will probe the light antiquark sea of the nucleon to follow up on measurements made by Fermilab E866/NuSea, with a goal of answering important questions raised by that experiment. SeaQuest will determine the ratio of the anti-down to anti-up quarks in the nucleon at Bjorken x up to 0.4, where the number of anti-quarks in the nucleon is extremely small. Above x=0.25, NuSea data indicate this ratio could be changing in a surprising manner where the ratio could be dipping below one. SeaQuest started commissioning and data collection in March-April of 2012, just before the Fermilab 120 GeV Main Injector (MI) shut down for a year. The present status of the SeaQuest experiment as it prepares to start back up this summer when the Fermilab MI resumes operation will be discussed. Some of the initial commissioning issues will be described, along with upgrades of the SeaQuest detector being made for high intensity running this year. Some of the other planned physics measurements that are possible will be outlined during this talk as well. [Preview Abstract] |
Friday, April 5, 2013 11:24AM - 11:36AM |
B1.00003: Higgs in Hot and Dense Background Samina Masood We study the leptonic decays of Higgs boson in hot and dense medium. It is shown explicitly that the currently known Higgs mass will suppress the temperature and density effects to the ignorable level. However, since Higgs scale is related to the symmetry breaking scale, it is still interested to see how the symmetry breaking mechanism is affected in hot and dense media. [Preview Abstract] |
Friday, April 5, 2013 11:36AM - 11:48AM |
B1.00004: D-Dimensional Gauge Models Douglas Moore, Jared Greenwald, Gerald Cleaver Utilizing the Gauge Framework, software under development at Baylor University, we explicitly construct all layer 1 weakly coupled free fermionic heterotic string (WCFFHS) gauge models up to order 32 in four to ten large spacetime dimensions. These gauge models are well suited for large scale systematic surveys and, while they offer little phenomenologically, are useful for understanding the structure of the WCFFHS region of the string landscape. We present the gauge groups statistics for this swath of the landscape for both supersymmetric and non-supersymmetric models as well as consider a unique approach for analyzing model production. [Preview Abstract] |
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