Bulletin of the American Physical Society
APS April Meeting 2016
Volume 61, Number 6
Saturday–Tuesday, April 16–19, 2016; Salt Lake City, Utah
Session B18: Undergraduate Research/SPS IUndergraduate
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Sponsoring Units: APS Chair: Crystal Bailey, APS Room: 251F |
Saturday, April 16, 2016 10:45AM - 10:57AM |
B18.00001: Strangeness Production in Jets with ALICE at the LHC Chrismond Smith, Austin Harton, Edmundo Garcia The study of strange particle production is an important tool for understanding the properties of the hot and dense QCD medium created in heavy-ion collisions at ultra-relativistic energies. The study of strange particles in these collisions provides information on parton fragmentation, a fundamental QCD process. While measurements at low and intermediate p$_{\mathrm{T}}$, are already in progress at the LHC, the study of high momentum observables is equally important for a complete understanding of the QCD matter, this can be achieved by studying jet interactions. We propose the measurement of the characteristics of the jets containing strange particles. Starting with proton-proton collisions, we have calculated the inclusive $p_{T}^{Jet} $ spectra and the spectra for jets containing strange particles (K-short or lambda), and we are extending this analysis to lead-lead collisions. In this talk the ALICE experiment will be described, the methodology used for the data analysis and the available results will be discussed. This material is based upon work supported by the National Science Foundation under grants PHY-1305280 and PHY-1407051. [Preview Abstract] |
Saturday, April 16, 2016 10:57AM - 11:09AM |
B18.00002: Event Plane Resolution Simulations for The Fast Interaction Trigger Detector of ALICE at the LHC Isiaka Sulaimon, Austin Harton, Edmundo Garcia CERN (European Center for Nuclear Research) is a global laboratory that studies proton and heavy ion collisions at the Large Hadron Collider (LHC). ALICE (A Large Ion Collider Experiment) is one of four large experiments of the LHC. ALICE is dedicated to the study of the transition of matter to Quark Gluon Plasma in heavy ion collisions. In the present ALICE detector there are two sub-detectors, (the T0 and V0), that provide minimum bias trigger, multiplicity trigger, beam-gas event rejection, collision time for other sub detectors, on line multiplicity and event plane determination. In order to adapt these functionalities to the collision rates expected for the LHC upgrade after 2020, it is planned to replace these systems by a single detector system, called the Fast Interaction Trigger (FIT). In this presentation we describe the performance parameters of the FIT upgrade; show the proposed characteristics of the T0-Plus and the simulations that support the conceptual design of this detector. In particular we describe the performance simulations of the event plane resolution. This material is based upon work supported by the National Science Foundation under grants NSF-PHY-0968903 and NSF-PHY-1305280. [Preview Abstract] |
Saturday, April 16, 2016 11:09AM - 11:21AM |
B18.00003: ABSTRACT MOVED TO C18.009 |
Saturday, April 16, 2016 11:21AM - 11:33AM |
B18.00004: Minimal realistic SU(5) Grand Unified Theory Nima Assad Despite making predictions in unprecedented agreement with experiment, such as the magnetic dipole moment of the electron to one part in a billion, the experimental confirmation of neutrino flavor oscillations, and thus of massive neutrinos, implies that the Standard Model (SM) of particle physics is incomplete. An extension of the SM, which retains its low energy predictions while accounting for massive neutrinos, is achieved through the introduction of the dimension 5 Weinberg operator and its associated energy scale above the electroweak (10\textasciicircum 2 GeV), but below the Planck scale (10\textasciicircum 19 GeV). The Beyond Standard Model (BSM) class of Grand Unified Theories (GUTs) implicates such a scale (10\textasciicircum 16 GeV) in the unification of the three SM gauge couplings, thus making the origin of neutrino mass a theoretically appealing probe into particle behavior at energies currently inaccessible experimentally. Here, we compare the 24F and 15H extensions of the Georgi-Glashow SU(5) GUT to accommodate massive neutrinos and to unify SM gauge couplings while minimizing the theory's additional field content. Using the Monte Carlo event generator MadGraph, each extension is found to produce distinct signatures at the run II of the LHC. [Preview Abstract] |
Saturday, April 16, 2016 11:33AM - 11:45AM |
B18.00005: The Evolution of t dependence in Meson Photoproduction Daniel Puentes, Brian Raue, Lei Guo, Adam Freese Studies of single-meson photoproduction off the proton over the past few decades have yielded tremendous amounts of data on differential cross sections. The wealth of data can be used to understand the exchange mechanisms responsible for the production of specific final-state hadrons. At low momentum transfer the the differential cross section $d\sigma/dt $ can be parameterized by the t-slope parameter b, where $d\sigma/dt \sim e^{-bt} $. We have determined b as a function of photon beam energy for the reactions $\gamma \text{p} \rightarrow \text{K}^{+} \Sigma^{0} $, $\gamma \text{p} \rightarrow \text{K}^{+} \Lambda $, $\gamma \text{p} \rightarrow \text{p} \omega $, $\gamma \text{p} \rightarrow \text{p} \eta $, $\gamma \text{p} \rightarrow \text{p} \eta^{'} $, $\gamma \text{p} \rightarrow \text{p} \rho^{0} $, $\gamma \text{p} \rightarrow \text{p} \pi^{0} $, and $\gamma \text{p} \rightarrow \text{p} \phi $. Preliminary results will be presented. [Preview Abstract] |
Saturday, April 16, 2016 11:45AM - 11:57AM |
B18.00006: Shimming the Muon g-2 Magnet Paul Nebres The Muon g-2 experiment at Fermilab will determine the anomalous magnetic moment of the muon. A deviation between this experimental result and the Standard Model theoretical calculation has the potential to reveal New Physics. In the experiment, muons are contained in a storage ring with a highly uniform magnetic field. We will achieve the required field uniformity through a process called shimming, which involves mapping the field and adjusting components of the storage ring to tune the field appropriately. In this talk, I will describe the design of the tools used in this process and explain the procedure for mapping the magnetic field. [Preview Abstract] |
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