Bulletin of the American Physical Society
83rd Annual Meeting of the APS Southeastern Section
Volume 61, Number 19
Thursday–Saturday, November 10–12, 2016; Charlottesville, Virginia
Session A3: JLab and TUNL Physics |
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Chair: Kent Paschke, University of Virginia Room: Monroe Room |
Thursday, November 10, 2016 8:30AM - 9:00AM |
A3.00001: Latest results from the GlueX experiment Invited Speaker: Mark Dalton The GlueX experiment aims to study the gluonic degrees of freedom in QCD by mapping the light meson spectrum with an emphasis on searching for and studying light hybrid mesons. A tagged, linearly-polarized 9~GeV photon beam is incident on a hydrogen target contained within a hermetic detector with near-complete neutral and charged particle coverage. In Spring of 2016 the experiment completed its commissioning and took its first substantial data in the design configuration. This data set already represents a significant increase in statistics for polarized photoproduction in this energy regime. The experiment will be introduced, ongoing data analysis will be summarized and some preliminary results presented. [Preview Abstract] |
Thursday, November 10, 2016 9:00AM - 9:30AM |
A3.00002: Upcoming Solid Polarized Target Experiments at JLAB and TUNL Invited Speaker: Dustin Keller Nuclear physics experiments using a solid polarized target attempt to extract polarized observables with optimal precision. A discussion is given on some of the proposed experiments using dynamically nuclear polarized (DNP) targets at Jefferson Lab and Triangle Universities Nuclear Laboratory. Some of the recent developments in the technology and techniques using DNP solid polarized target are also presented. [Preview Abstract] |
Thursday, November 10, 2016 9:30AM - 10:00AM |
A3.00003: Parity violating electron scattering at JLab: the MOLLER experiment Invited Speaker: Paul King Parity violating electron scattering (PVES) provides a tool which has been used at laboratories around the world to investigate aspects of nuclear and nucleon structure and to probe for physics beyond the Standard Model. Jefferson Lab has several proposed PVES experiments in the 12~GeV era, one of which is the MOLLER experiment. MOLLER proposes measuring the parity violating asymmetry in electron-electron scattering at a beam energy of 11~GeV, to determine the weak charge of the electron ($Q_w^e = 1-4\sin^2\theta_W$ at tree level) to a relative precision of 2.3\%. From this measurement, the weak mixing angle at low 4-momentum transfer can be extracted and compared to the precise Standard Model predictions. Deviations would indicate new physics interactions were contributing to the PVES asymmetry; interpreting possible new physics as a contact interaction, MOLLER would have a sensitivity of $\Lambda/g\simeq 7.5~\mathrm{TeV}$. [Preview Abstract] |
Thursday, November 10, 2016 10:00AM - 10:30AM |
A3.00004: The Weird Chemistry of Globular Cluster - Nuclear Physics to the Rescue? Invited Speaker: Arthur Champagne Globular clusters are the oldest structures to form in the galaxy and thus their ages provide a wealth of information about the evolution of the Milky Way. These ages assume that we understand stellar evolution and the chemical history of the clusters and both have been called into question. For example, clusters exhibit anomalous elemental and isotopic abundance patterns as compared with isolated stars, the best studied being the anticorrelation between sodium and oxygen. Various models have been constructed to explain this effect and some call into question the initial assumptions that go into ages of clusters. This talk will focus on measurements at LENA of the nuclear reactions that give rise to the observed Na vs. O and whether or not we can constrain the model space using nuclear physics. [Preview Abstract] |
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