Physics Newsletter 2006
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Thesis Title Year First Job Now BOSTON BRANDEIS
Thesis Title Year First Job Now BOSTON Jeremy Love A Search For Technicolor At The Large Hadron Collider 2012 ANL PD ANL Clare Bernard Standard model and exotic physics with the top quark at ATLAS 2014 Tamr Tamr Michael Kruskal A search for dark matter with bottom quarks 2016 MathWorks Alex Long WWW production at the LHC 2016 Insight Tamr Efe Yigibasi Search for Dark Matter Produced in Association with a Higgs Boson Decaying to $b\bar b$ using 36 fb$^{-1}$ of $pp$ collisions 2018 Alex Sherman Measurement of the production cross-section of a single top quark in association with a $Z$ boson in proton-proton c2018 BRANDEIS Scott Aefsky Search for a High-Mass Electron-Muon Resonance 2011 Fusion Research Co Sr. Data Scientist, Agero Dan Pomeroy Search for Lepton Flavor Violation in the e-mu Continuum 2012 Policy Advisor, MIT Internt Serdar Gozpinar Search for Excited Muons at 7TeV 2012 Natl Academy of Scientists SUNY Buffalo Faculty Eric Fitzgerald Search for New Physics in the Dilepton Channel 2013 SUNY Buffalo Faculty Data Scientist, Nike Laurel Coffman A Serach for New Physics with Electron-Tau Final States Using the ATLAS Detector at the LHC 2015 Public Education Public Education Keith Zengel Search for a heavy neutral particle decaying into e-mu, e-tau, or mu-tau final states in pp collisions at sqrt(s) = 8 TeV with the AT 2015 Lecturer Preceptor, Harvard Stefano Zambito Measurement of the Higgs Boson Production and Couplings in the Four-Lepton Decay Channel with the ATLAS Detector 2015 Harvard Harvard Lou Bianchini A Search for a Left-Right Symmetric Model with the ATLAS Detector 2016 Data Scientist in Industry Glenn Amundsen Search for excited muons decaing via a contact interaction in proton-proton collisions at sqrt(s) = 8 TeV with the ATLAS detecto 2016 Financial Sector Financial Sector Alessio Ventufrini Searching for dark matter in the mono-jet channel with the ATLAS detector 2017 lastminute.com Financial Sector Kelsey Shea Stoddard Search for Heavy Neutral Leptons in pp Collisions at the LHC 2020 Industry- Satellite Imaging Co. -
Analysis and Instrumentation for a Xenon-Doped Liquid Argon System
Analysis and instrumentation for a xenon-doped liquid argon system Ryan Gibbons Work completed under the advisement of Professor Michael Gold Department of Physics and Astronomy The University of New Mexico May 27, 2020 1 Abstract Liquid argon is a scintillator frequently used in neutrino and dark matter exper- iments. In particular, is the upcoming LEGEND experiment, a neutrinoless double beta decay search, which will utilize liquid argon as an active veto system. Neutri- noless double beta decay is a theorized lepton number violating process that is only possible if neutrinos are Majorana in nature. To achieve the LEGEND background goal, the liquid argon veto must be more efficient. Past studies have shown the ad- dition of xenon in quantities of parts-per-million in liquid argon improves the light yield, and therefore efficiency, of such a system. Further work, however, is needed to fully understand the effects of this xenon doping. I present a physical model for the light intensity of xenon-doped liquid argon. This model is fitted to data from various xenon concentrations from BACoN, a liquid argon test stand. Additionally, I present preliminary work on the instrumentation of silicon photomultipliers for BACoN. 2 Contents 1 Introduction 4 1.1 Neutrinos and double beta decay . 4 1.2 LEGEND and BACoN . 5 1.3 Liquid argon . 6 2 Physical modeling of xenon-doped liquid argon 8 2.1 Model . 8 2.2 Fits to BACoN Data . 9 2.3 Analysis of Rate Constant . 12 3 Instrumentation of SiPMs 12 4 Conclusions and Future Work 13 3 1 Introduction 1.1 Neutrinos and double beta decay Neutrinos are neutral leptons that come in three flavors: electron, muon, and tao. -
ANTIMATTER a Review of Its Role in the Universe and Its Applications
A review of its role in the ANTIMATTER universe and its applications THE DISCOVERY OF NATURE’S SYMMETRIES ntimatter plays an intrinsic role in our Aunderstanding of the subatomic world THE UNIVERSE THROUGH THE LOOKING-GLASS C.D. Anderson, Anderson, Emilio VisualSegrè Archives C.D. The beginning of the 20th century or vice versa, it absorbed or emitted saw a cascade of brilliant insights into quanta of electromagnetic radiation the nature of matter and energy. The of definite energy, giving rise to a first was Max Planck’s realisation that characteristic spectrum of bright or energy (in the form of electromagnetic dark lines at specific wavelengths. radiation i.e. light) had discrete values The Austrian physicist, Erwin – it was quantised. The second was Schrödinger laid down a more precise that energy and mass were equivalent, mathematical formulation of this as described by Einstein’s special behaviour based on wave theory and theory of relativity and his iconic probability – quantum mechanics. The first image of a positron track found in cosmic rays equation, E = mc2, where c is the The Schrödinger wave equation could speed of light in a vacuum; the theory predict the spectrum of the simplest or positron; when an electron also predicted that objects behave atom, hydrogen, which consists of met a positron, they would annihilate somewhat differently when moving a single electron orbiting a positive according to Einstein’s equation, proton. However, the spectrum generating two gamma rays in the featured additional lines that were not process. The concept of antimatter explained. In 1928, the British physicist was born. -
Ten Years of PAMELA in Space
Ten Years of PAMELA in Space The PAMELA collaboration O. Adriani(1)(2), G. C. Barbarino(3)(4), G. A. Bazilevskaya(5), R. Bellotti(6)(7), M. Boezio(8), E. A. Bogomolov(9), M. Bongi(1)(2), V. Bonvicini(8), S. Bottai(2), A. Bruno(6)(7), F. Cafagna(7), D. Campana(4), P. Carlson(10), M. Casolino(11)(12), G. Castellini(13), C. De Santis(11), V. Di Felice(11)(14), A. M. Galper(15), A. V. Karelin(15), S. V. Koldashov(15), S. Koldobskiy(15), S. Y. Krutkov(9), A. N. Kvashnin(5), A. Leonov(15), V. Malakhov(15), L. Marcelli(11), M. Martucci(11)(16), A. G. Mayorov(15), W. Menn(17), M. Mergè(11)(16), V. V. Mikhailov(15), E. Mocchiutti(8), A. Monaco(6)(7), R. Munini(8), N. Mori(2), G. Osteria(4), B. Panico(4), P. Papini(2), M. Pearce(10), P. Picozza(11)(16), M. Ricci(18), S. B. Ricciarini(2)(13), M. Simon(17), R. Sparvoli(11)(16), P. Spillantini(1)(2), Y. I. Stozhkov(5), A. Vacchi(8)(19), E. Vannuccini(1), G. Vasilyev(9), S. A. Voronov(15), Y. T. Yurkin(15), G. Zampa(8) and N. Zampa(8) (1) University of Florence, Department of Physics, I-50019 Sesto Fiorentino, Florence, Italy (2) INFN, Sezione di Florence, I-50019 Sesto Fiorentino, Florence, Italy (3) University of Naples “Federico II”, Department of Physics, I-80126 Naples, Italy (4) INFN, Sezione di Naples, I-80126 Naples, Italy (5) Lebedev Physical Institute, RU-119991 Moscow, Russia (6) University of Bari, I-70126 Bari, Italy (7) INFN, Sezione di Bari, I-70126 Bari, Italy (8) INFN, Sezione di Trieste, I-34149 Trieste, Italy (9) Ioffe Physical Technical Institute, RU-194021 St. -
Observation of High-Energy Gamma-Rays with the Calorimetric
Louisiana State University LSU Digital Commons LSU Doctoral Dissertations Graduate School 10-22-2018 Observation of High-Energy Gamma-Rays with the Calorimetric Electron Telescope (CALET) On-board the International Space Station Nicholas Wade Cannady Louisiana State University and Agricultural and Mechanical College, [email protected] Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_dissertations Part of the Instrumentation Commons, and the Other Astrophysics and Astronomy Commons Recommended Citation Cannady, Nicholas Wade, "Observation of High-Energy Gamma-Rays with the Calorimetric Electron Telescope (CALET) On-board the International Space Station" (2018). LSU Doctoral Dissertations. 4736. https://digitalcommons.lsu.edu/gradschool_dissertations/4736 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Doctoral Dissertations by an authorized graduate school editor of LSU Digital Commons. For more information, please [email protected]. OBSERVATION OF HIGH-ENERGY GAMMA-RAYS WITH THE CALORIMETRIC ELECTRON TELESCOPE (CALET) ON-BOARD THE INTERNATIONAL SPACE STATION A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The Department of Physics and Astronomy by Nicholas Wade Cannady B.S., Louisiana State University, 2011 December 2018 To Laura and Mom ii Acknowledgments First and foremost, I would like to thank my partner, Laura, for the constant and unconditional support that she has provided during the research described in this thesis and my studies in general. Without her, this undertaking would not have been possible. -
New Device Uses Biochemistry Techniques to Detect Rare Radioactive Decays 27 March 2018, by Louisa Kellie
New device uses biochemistry techniques to detect rare radioactive decays 27 March 2018, by Louisa Kellie UTA researchers are now taking advantage of a biochemistry technique that uses fluorescence to detect ions to identify the product of a radioactive decay called neutrinoless double-beta decay that would demonstrate that the neutrino is its own antiparticle. Radioactive decay is the breakdown of an atomic nucleus releasing energy and matter from the nucleus. Ordinary double-beta decay is an unusual mode of radioactivity in which a nucleus emits two electrons and two antineutrinos at the same time. However, if neutrinos and antineutrinos are identical, then the two antineutrinos can, in effect, cancel each other, resulting in a neutrinoless decay, with all of the energy given to the two Dr. Ben Jones, UTA assistant professor of physics, who electrons. is leading this research for the American branch of the Neutrino Experiment with Xenon TPC -- Time Projection Chamber or NEXT program. Credit: UTA To find this neutrinoless double-beta decay, scientists are looking at a very rare event that occurs about once a year, when a xenon atom decays and converts to barium. If a neutrinoless UTA researchers are leading an international team double-beta decay has occurred, you would expect developing a new device that could enable to find a barium ion in coincidence with two physicists to take the next step toward a greater electrons of the right total energy. UTA researchers' understanding of the neutrino, a subatomic particle proposed new detector precisely would permit that may offer an answer to the lingering mystery identifying this single barium ion accompanying of the universe's matter-antimatter imbalance. -
Smutty Alchemy
University of Calgary PRISM: University of Calgary's Digital Repository Graduate Studies The Vault: Electronic Theses and Dissertations 2021-01-18 Smutty Alchemy Smith, Mallory E. Land Smith, M. E. L. (2021). Smutty Alchemy (Unpublished doctoral thesis). University of Calgary, Calgary, AB. http://hdl.handle.net/1880/113019 doctoral thesis University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Downloaded from PRISM: https://prism.ucalgary.ca UNIVERSITY OF CALGARY Smutty Alchemy by Mallory E. Land Smith A THESIS SUBMITTED TO THE FACULTY OF GRADUATE STUDIES IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY GRADUATE PROGRAM IN ENGLISH CALGARY, ALBERTA JANUARY, 2021 © Mallory E. Land Smith 2021 MELS ii Abstract Sina Queyras, in the essay “Lyric Conceptualism: A Manifesto in Progress,” describes the Lyric Conceptualist as a poet capable of recognizing the effects of disparate movements and employing a variety of lyric, conceptual, and language poetry techniques to continue to innovate in poetry without dismissing the work of other schools of poetic thought. Queyras sees the lyric conceptualist as an artistic curator who collects, modifies, selects, synthesizes, and adapts, to create verse that is both conceptual and accessible, using relevant materials and techniques from the past and present. This dissertation responds to Queyras’s idea with a collection of original poems in the lyric conceptualist mode, supported by a critical exegesis of that work. -
APS News January 2019, Vol. 28, No. 1
January 2019 • Vol. 28, No. 1 A PUBLICATION OF THE AMERICAN PHYSICAL SOCIETY Plasma physics and plants APS.ORG/APSNEWS Page 3 Highlights from 2018 Blending Paint with Physics The editors of Physics (physics. The experiments sparked a series By Leah Poffenberger aps.org) look back at their favorite of theoretical studies, each attempt- 2018 APS Division of Fluid stories of 2018, from groundbreak- ing to explain this unconventional Dynamics Meeting, Atlanta— ing research to a poem inspired by behavior (see physics.aps.org/ Five years ago, Roberto Zenit, a quantum physics. articles/v11/84). One prediction physics professor at the National Graphene: A New indicates that twisted graphene’s Autonomous University of Mexico, superconductivity might also be Superconductor later reported the first observation was studying biological flows when topological, a desirable property 2018’s splashiest condensed- of the Higgs boson decaying into art historian Sandra Zetina enlisted for quantum computation. matter-physics result came bottom quarks (see physics.aps.org/ him for a project: using fluid from two sheets of graphene. The Higgs Shows up with the articles/v11/91). This decay is the dynamics to uncover the secret Researchers in the USA and Japan Heaviest Quarks most likely fate of the Higgs boson, behind modern art techniques. reported finding superconductiv- After detecting the Higgs boson but it was extremely difficult to At this year’s Division of Fluid ity in stacked graphene bilayers in 2012, the next order of business see above the heavy background Dynamics meeting—his 20th— ids, a person who has developed in which one layer is twisted with was testing whether it behaves as of bottom quarks generated in a Zenit, an APS Fellow and member certain knowledge about the way respect to the other. -
Pursuit of Dark Matter Progresses At
New results from the Alpha Magnetic Spectrometer experiment show that a possible sign of dark matter is within scientists’ reach. Dark matter is a form of matter that neither emits nor absorbs light. Scientists think it is about five times as prevalent as regular matter, but so far have observed it only indirectly. The AMS experiment, which is secured to the side of the International Space Station 250 miles above Earth, studies cosmic rays, high-energy particles in space. A small fraction of these particles may have their origin in the collisions of dark matter particles that permeate our galaxy. Thus it may be possible that dark matter can be detected through measurements of cosmic rays. AMS scientists—based at the AMS control center at CERN research center in Europe and at collaborating institutions worldwide—compare the amount of matter and antimatter cosmic rays of different energies their detector picks up in space. AMS has collected information about 54 billion cosmic ray events, of which scientists have analyzed 41 billion. Theorists predict that at higher and higher energies, the proportion of antimatter particles called positrons should drop in comparison to the proportion of electrons. AMS found this to be true. However, in 2013 it also found that beyond a certain energy—8 billion electronvolts—the proportion of positrons begins to climb steeply. “This means there’s something new there,” says AMS leader and Nobel Laureate Sam Ting of the Massachusetts Institute of Technology and CERN. “It’s totally unexpected.” The excess was a clear sign of an additional source of positrons. -
Theory of Dual Horizonradius of Spacetime Curvature
Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 15 May 2020 doi:10.20944/preprints202005.0250.v1 Theory of Dual Horizon Radius of Spacetime Curvature Mohammed. B. Al Fadhli1* 1College of Science, University of Lincoln, Lincoln, LN6 7TS, UK. Abstract The necessity of the dark energy and dark matter in the present universe could be a consequence of the antimatter elimination assumption in the early universe. In this research, I derive a new model to obtain the potential cosmic topology and the horizon radius of spacetime curvature 푅ℎ(휂) utilising a new construal of the geometry of space inspired by large-angle correlations of the cosmic microwave background (CMB). I utilise the Big Bounce theory to tune the initial conditions of the curvature density, and to avoid the Big Bang singularity and inflationary constraints. The mathematical derivation of a positively curved universe governed by only gravity revealed ∓ horizon solutions. Although the positive horizon is conventionally associated with the evolution of the matter universe, the negative horizon solution could imply additional evolution in the opposite direction. This possibly suggests that the matter and antimatter could be evolving in opposite directions as distinct sides of the universe, such as visualised Sloan Digital Sky Survey Data. Using this model, we found a decelerated stage of expansion during the first ~10 Gyr, which is followed by a second stage of accelerated expansion; potentially matching the tension in Hubble parameter measurements. In addition, the model predicts a final time-reversal stage of spatial contraction leading to the Big Crunch of a cyclic universe. The predicted density is Ω0 = ~1.14 > 1. -
Patentable Subject [Anti]Matter
PATENTABLE SUBJECT [ANTI]MATTER Whether antihydrogen qualifies as patentable subject matter for the purposes of the United States patent law is not an easy question. In general, man-made inventions and new compositions of matter are proper subjects of patent protection, while products of nature are not. Antihydrogen, a newly created element made entirely of antimatter, has qualities of both a newly created composition of matter and a product of nature. As a result, antihydrogen approaches the theoretical boundaries of the product of nature doctrine because mankind finally has the opportunity to create for the very first time an element that has probably never existed before in the entire universe. This iBrief will begin by briefly explaining antimatter and antihydrogen. Then, a distinction will be drawn between a man-made invention and a product of nature by analyzing relevant case law. Finally, antihydrogen will be analyzed as hypothetical subject matter under the United States patent laws without considering the further requirements of novelty and non-obviousness. An Overview of Antimatter and Antihydrogen Antimatter In 1930, the theoretical physicist Paul Dirac predicted that for every particle of matter, there exists an equivalent particle of antimatter.1 The existence of antimatter was confirmed in 1933 with the discovery of the positron, the antimatter pair of the electron.2 The theory does not mean to say that every proton in the universe must have a ghostly antiproton pair; rather it simply means that matter in the universe can be made of “real” matter, like protons and electrons, or it can be made of antimatter, like antiprotons and positrons. -
Dark Matter, Symmetries and Cosmology
UNIVERSITY OF CALIFORNIA, IRVINE Symmetries, Dark Matter and Minicharged Particles DISSERTATION submitted in partial satisfaction of the requirements for the degree of DOCTOR OF PHILOSOPHY in Physics by Jennifer Rittenhouse West Dissertation Committee: Professor Tim Tait, Chair Professor Herbert Hamber Professor Yuri Shirman 2019 © 2019 Jennifer Rittenhouse West DEDICATION To my wonderful nieces & nephews, Vivian Violet, Sylvie Blue, Sage William, Micah James & Michelle Francesca with all my love and so much freedom for your beautiful souls To my siblings, Marlys Mitchell West, Jonathan Hopkins West, Matthew Blake Evans Tied together by the thread in Marlys’s poem, I love you so much and I see your light To my mother, Carolyn Blake Evans, formerly Margaret Carolyn Blake, also Dickie Blake, Chickie-Dickie, Chickie D, Mimikins, Mumsie For never giving up, for seeing me through to the absolute end, for trying to catch your siblings in your dreams. I love you forever. To my father, Hugh Hopkins West, Papa-san, with all my love. To my step-pop, Robert Joseph Evans, my step-mum, Ann Wilkinson West, for loving me and loving Dickie and Papa-san. In memory of Jane. My kingdom for you to still be here. My kingdom for you to have stayed so lionhearted and sane. I carry on. Piggy is with me. In memory of Giovanni, with love and sorrow. Io sono qui. Finally, to Physics, the study of Nature, which is so deeply in my bones that it cannot be removed. I am so grateful to be able to try to understand. ... "You see I am absorbed in painting with all my strength; I am absorbed in color - until now I have restrained myself, and I am not sorry for it.