Murray Gell-Mann Papers
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Tcomposite Weak Bosons, Leptons and Quarks
Subnuclear Physics: Past, Present and Future Pontifical Academy of Sciences, Scripta Varia 119, Vatican City 2014 www.pas.va/content/dam/accademia/pdf/sv119/sv119-fritzsch.pdf TComposite Weak Bosons, Leptons and Quarks HARALD FRITZSCH University of Munich Faculty of Physics, Arnold Sommerfeld Center for Theoretical Physics, Abstract The weak bosons consist of two fermions, bound by a new confin- ing gauge force. The mass scale of this new interaction is determined. At energies below 0.5 TeV the standard electroweak theory is valid. AneutralisoscalarweakbosonX must exist - its mass is less than 1TeV.Itwilldecaymainlyintoquarkandleptonpairsandintotwo or three weak bosons. Above the mass of 1 TeV one finds excitations of the weak bosons, which mainly decay into pairs of weak bosons. Leptons and quarks consist of a fermion and a scalar. Pairs of leptons and pairs of quarks form resonances at very high energy. 280 Subnuclear Physics: Past, Present and Future COMPOSITE WEAK BOSONS, LEPTONS AND QUARKS In the Standard Model the leptons, quarks and weak bosons are pointlike particles. I shall assume that they are composite particles with a finite size. The present limit on the size of the electron, the muon and of the light quarks is about 10−17 cm. The constituents of the weak bosons and of the leptons and quarks are bound by a new confining gauge interaction. Due to the parity violation in the weak interactions this theory must be a chiral gauge theory, unlike quantum chromodynamics. The Greek translation of ”simple” is ”haplos”. We denote the con- stituents as ”haplons” and the new confining gauge theory as quantum hap- lodynamics ( QHD ). -
Interactions the Newsletter of the UB Department of Physics Volume 4, Issue 2 Fall 2011
Interactions The Newsletter of the UB Department of Physics Volume 4, Issue 2 Fall 2011 established well formulated procedures for all the graduate studies. He continues to be a source of information and ad- vice for our graduate program. Our majors, headed by Alec Cheney, were instrumental in starting a new chapter of the Sigma Pi Sigma, the Phys- ics Honors Society, at UB. They collected signatures and petitioned the Society for a UB chapter. After successfully receiving approval, they also made arrangements for the installation. The President of the Sigma PI Sigma, Dr. Di- ane Jacobs, presided the chapter installation ceremony on November 4. Five students, Alec Cheney, Matthew Gorfien, Connor Gorman, Chun Kwan and Katherine Spoth, were in- Dear alumni and friends, ducted during the ceremony. It was very rewarding to see As I mentioned in the previous issue, the new President and our majors take charge, accomplish their goals and receive the Dean of CAS are now in office. The SUNY2020 legisla- recognition for their outstanding achievements. tion was passed and signed into law, which allows UB for This year’s Homecoming was made special by the return of the first time to plan on a five-year horizon. The new direc- our distinguished alumnus, Dr. Thomas Bogdan (featured tions and initiatives that are being implemented by the new in Alumni in Focus), to give an exciting public lecture on administration are therefore more tangible than symbolic. space weather. He has been the Director of the National This means opportunities for the Department. It is encour- Space Weather Prediction Center, and was recently named aging to see that the President’s plan for the University over- the President of the University Corporation for Atmospheric laps with some of the main concerns and aspirations of the Research, starting January 9, 2012. -
Facing Our Future
ABOUT THE COVER ART Get ready for the end of our world as we know it. How can we not despair at such a prospect? Roll up the sleeves on imagination, compassion, and science and let’s get ready for our new world. The poster for Gustavus Adolphus College’s Nobel Conference “Climate Changed” illustrates some of the solutions for living in a changed climate, as well as the attendant reality of mass migrations. Sharon Stevenson, Designer CLIMATE CHANGEDFACING OUR FUTURE 800 West College Avenue | Saint Peter, MN 56082 | gustavus.edu/nobelconference NOBEL CONFERENCE 55 | SEPTEMBER 24 & 25, 2019 | GUSTAVUS ADOLPHUS COLLEGE NOBEL CONFERENCE 55 I love being in nature, whether it is time at our family cabin WELCOin northern Minnesota, a walk in the Linnaeus Arboretum at ME Gustavus, or the trip I took this summer with my husband to camp and hike in the western national parks. Like many people, I find nature to be a source of renewal, a connection to the Earth and the Divine, and a reminder of the interconnectedness of creation. Also, like many people, I am concerned about our world. As scientific evidence of human-caused climate change is mounting, members of the Gustavus community are working to understand this crisis and its local and Alfred Nobel had a vision of global effects. On campus, several groups are working on this great challenge a better world. He believed of our time. For example, the President’s Environmental Sustainability Council that people were capable of and the student-led Environmental Action Coalition are leading campus initiatives to reduce our helping to improve society campus energy use by 25 percent in the next five years and make improvements in recycling and through knowledge, science, and waste management with the goal of becoming a zero-waste campus, with 90 percent of solid waste humanism. -
Asia Pacific Physics Newsletter
Asia Pacific Physics Newsletter March 2016 Volume 5 • Number 1 worldscinet.com/appn Takaaki Kajita 2015 Physics Nobel Laureate published by Institute of Advanced Studies, Nanyang Technological University (IAS@NTU) and South East Asia Theoretical Physics Association (SEATPA) South East Asia Theoretical Physics Association Asia Pacific Physics Newsletter March 2016 • Volume 5 • Number 1 A publication of the IAS@NTU Singapore and SEATPA Asia Pacific Physics Newsletter publishes articles reporting frontier discoveries in EDITORIAL physics, research highlights, and news to facilitate interaction, collaboration and 3 cooperation among physicists in Asia Pacific physics community. PEOPLE Editor-in-Chief 4 “Observing the Distant Supernova” — Interview with Kok Khoo Phua Nobel Laureate Prof Brian Schmidt Associate Editor-in-Chief “Discovering the W and Z Bosons” — Interview with Swee Cheng Lim Nobel Laureate Prof Carlo Rubbia SEATPA Committee Christopher C Bernido Phil Chan Leong Chuan Kwek Choy Heng Lai Swee Cheng Lim Ren Bao Liu Hwee Boon Low Anh Ký Nguyên Choo Hiap Oh OPINION AND COMMENTARY Kok Khoo Phua 10 China’s Great Scientific Leap Forward: Completion of a Roh Suan Tung Preecha Yupapin planned ‘Great Collider’ would transform particle physics Hishamuddin Zainuddin Freddy Zen Editorial Team NEWS Sen Mu 12 CityU’s Institute for Advanced Study will Champion Bold New Han Sun Chi Xiong Research Initiatives Case made for 'Ninth Planet' Graphic Designers Chuan Ming Loo Erin Ong Cover Photo: "Takaaki Kajita 5171- 2015" by Bengt Nyman - Own work. -
SHELDON LEE GLASHOW Lyman Laboratory of Physics Harvard University Cambridge, Mass., USA
TOWARDS A UNIFIED THEORY - THREADS IN A TAPESTRY Nobel Lecture, 8 December, 1979 by SHELDON LEE GLASHOW Lyman Laboratory of Physics Harvard University Cambridge, Mass., USA INTRODUCTION In 1956, when I began doing theoretical physics, the study of elementary particles was like a patchwork quilt. Electrodynamics, weak interactions, and strong interactions were clearly separate disciplines, separately taught and separately studied. There was no coherent theory that described them all. Developments such as the observation of parity violation, the successes of quantum electrodynamics, the discovery of hadron resonances and the appearance of strangeness were well-defined parts of the picture, but they could not be easily fitted together. Things have changed. Today we have what has been called a “standard theory” of elementary particle physics in which strong, weak, and electro- magnetic interactions all arise from a local symmetry principle. It is, in a sense, a complete and apparently correct theory, offering a qualitative description of all particle phenomena and precise quantitative predictions in many instances. There is no experimental data that contradicts the theory. In principle, if not yet in practice, all experimental data can be expressed in terms of a small number of “fundamental” masses and cou- pling constants. The theory we now have is an integral work of art: the patchwork quilt has become a tapestry. Tapestries are made by many artisans working together. The contribu- tions of separate workers cannot be discerned in the completed work, and the loose and false threads have been covered over. So it is in our picture of particle physics. Part of the picture is the unification of weak and electromagnetic interactions and the prediction of neutral currents, now being celebrated by the award of the Nobel Prize. -
April 17-19, 2018 the 2018 Franklin Institute Laureates the 2018 Franklin Institute AWARDS CONVOCATION APRIL 17–19, 2018
april 17-19, 2018 The 2018 Franklin Institute Laureates The 2018 Franklin Institute AWARDS CONVOCATION APRIL 17–19, 2018 Welcome to The Franklin Institute Awards, the a range of disciplines. The week culminates in a grand United States’ oldest comprehensive science and medaling ceremony, befitting the distinction of this technology awards program. Each year, the Institute historic awards program. celebrates extraordinary people who are shaping our In this convocation book, you will find a schedule of world through their groundbreaking achievements these events and biographies of our 2018 laureates. in science, engineering, and business. They stand as We invite you to read about each one and to attend modern-day exemplars of our namesake, Benjamin the events to learn even more. Unless noted otherwise, Franklin, whose impact as a statesman, scientist, all events are free, open to the public, and located in inventor, and humanitarian remains unmatched Philadelphia, Pennsylvania. in American history. Along with our laureates, we celebrate his legacy, which has fueled the Institute’s We hope this year’s remarkable class of laureates mission since its inception in 1824. sparks your curiosity as much as they have ours. We look forward to seeing you during The Franklin From sparking a gene editing revolution to saving Institute Awards Week. a technology giant, from making strides toward a unified theory to discovering the flow in everything, from finding clues to climate change deep in our forests to seeing the future in a terahertz wave, and from enabling us to unplug to connecting us with the III world, this year’s Franklin Institute laureates personify the trailblazing spirit so crucial to our future with its many challenges and opportunities. -
Richard Feynman by Harald Fritzsch
ARTSCIENCE MUSEUM™ PRESENTS ALL POSSIBLE Harald Fritzsch Richard Feynman RICHARD FEYNMAN’S CURIOUS LIFE In 1968, I escaped from East Germany with a folding canoe, crossing the Black In 1975, Feynman bought a Dodge Tradesman Maxivan and had it painted with Sea from Northern Bulgaria to Turkey. Then I worked as a Ph.D. student at the Feynman diagrams. Once, we were going camping with Feynman and his wife Max-Planck-Institute in Munich. In the Fall of 1970, I went for 6 months to the in the Anza Borrego desert park near Palm Springs. Feyman drove his big Stanford Linear Accelerator Center (SLAC) in Palo Alto, California. Since at that camping car. On the way back, Feynman stopped at a gas station in Palm time I collaborated with Murray Gell-Mann, I went twice a month for a few days Springs. The guy at the station asked Feynman: “Why you have these to the California Institute of Technology (Caltech) in Pasadena, about 360 miles Feynman Diagrams on your car?” Feynman told him, that he is Feynman, and south from Palo Alto. the guy answered: “Well, in this case you do not have to pay for the gasoline.” In Caltech I met Richard Feynman for the first time, and we discussed physics Feynman had a house at the beach near Ensenada in Baja California, Mexico. almost every day, in particular his parton model. He assumed that the nucleons He called the house “Casita Barranca”. Feynman invited us to plan a visit to consist of small pointlike constituents, which he called partons. -
Nobel Pris Og NBI
Hvilke forskere, både danske og udenlandske, med tilknytning til NBI har gennem tiden modtaget en nobelpris? M I Nobelpristagere med tilknytning til NBI Der er en lang række Nobelpristagere, som har været ansat i en eller anden form på NBI (Niels Bohr Institutet). Der er desuden en del, der har opholdt sig og arbejdet på institutet i en periode, men ikke har været ansat. De har så været lønnet af deres hjemmeuniversitet og brugt tiden til et samarbejde med en eller flere forskere på NBI, som oftest med en videnskabelig artikel som resultat. Endeligt har der i ”utallige” år været en skik, at fysik nobelpristagere blev inviteret til at komme til København, give en forelæsning, og efter eget ønske blive lidt tid umiddelbart efter modtagelsen af Nobelprisen (hvor de jo alligevel var i Stockholm). I den form har en meget stor del af nobelpristagerne efter institutets oprettelse, været på besøg.. Jeg husker selv fra et af mine første studieår en strålende forelæsning af: Donald Arthur Glaser f: 1926 i USA nobelpris i 1960, med en efterfølgende animeret fest med nobelpristageren i fysik- matematik- og kemi- studerendes forening (som hed parentesen). Der har især i Bohrs tid men været en lang række konferencer og møder, hvor stort set hele den videnskabelige verdens store, har været tilstede f.eks.: Max Karl Ernst Ludwig Planck f: D 1858 d: 1947 nobelpris 1916, Albert Einstein f: D 1879 d: 1955 nobelrpis 1921, Douglas D. Osheroff f: USA 1945 nobelpris 1996 og mange, mange andre. I den nedenstående liste er udvalgt de, der dokumenterbart har haft en eller anden form for regulær ansættelse på NBI. -
Tribute to Valentine Telegdi
Tribute to Valentine Telegdi who passed away on April 8th in Pasadena by K. Freudenreich, ETHZ/IPP/LHP Plenary CHIPP Meeting, PSI, October 2, 2006 Val Telegdi: years 1922 - 1943 Born on January 11th, 1922 in Budapest, spent only a few years in Hungary. According to his own words in his younger years he was a master of “involuntary tourism” , participating passively in German occupations in three countries: Austria, Belgium and Northern Italy. He attended grammar school in Vienna and then a technical school in Brussels. From 1940 - 1943 he worked in a patent attorney’s office in Milan. He used to say that - contrary to Albert Einstein in Berne - being on the other side of the fence he really had to work hard. When the Germans occupied Northern Italy Val, together with his mother, fled to Switzerland. October 2, 2006, Plenary CHIPP Meeting, PSI, K. Freudenreich, ETHZ 1/20 Val Telegdi: years 1943 - 1946 After a short internment in a refugee camp he joined his father in Lausanne where he studied chemical engineering at the EPUL with a grant from the F onds Europ´een de Secours aux Etudiants. At the EPUL he also attended lectures in theoretical physics given by E.C.G. Stuckelberg¨ von Breidenbach whom he estimated very highly. Ironic telegram by Gell-Mann to “congratulate” Feynman for his Nobel prize: “Now you can give back my notes”, signed Stuckelberg¨ Stuckelberg¨ helped Val to be accepted by P. Scherrer at ETHZ. October 2, 2006, Plenary CHIPP Meeting, PSI, K. Freudenreich, ETHZ 2/20 Val Telegdi: years 1946 - 1951 In 1946 the institute of physics was located at the Gloriastrasse. -
Louisa Pritchard Associates Frankfurt Book Fair 2018
LOUISA PRITCHARD ASSOCIATES FRANKFURT BOOK FAIR 2018 Louisa Pritchard Associates, Flat 5, 81 Battersea Church Road, London SW11 3LY Tel: + 44 20 7193 7145 Email: [email protected] The complete list LPA is proud to represent: Geraldine Cooke Literary Agency (translation rights) Elliott & Thompson (ANZ, translation) Annette Green Authors’ Agency (US and translation rights) Influx Press (ANZ, US and translation rights) Andrew Mann Ltd (translation, excluding Germany) MBA Literary Agents (translation rights) Moth Publishing (ANZ, US and translation rights) Myriad Editions (ANZ, US and translation rights) Emily Sweet Associates (translation rights) The Science Factory (translation rights, excluding Japan and Korea) Robert Smith Literary Agency (translation rights) The Zeno Agency (Brazil, France, Greece, Netherlands, Portugal, Spain, Nordic countries) For all enquiries, please contact: Louisa Pritchard LPA Flat 5 81 Battersea Church Road London SW11 3LY Email: [email protected] Tel: + 44 20 7193 7145 Mobile: + 44 7714 721 787 We’ll be based at table 8N in the agents’ centre at the Frankfurt Book Fair. 1 CONTENTS FICTION Crime and thrillers 3 General fiction 12 YA and children’s 39 Science fiction and fantasy 40 Gift books and graphic novels 45 NON-FICTION Health and well-being 52 Philosophy 57 Popular science 61 Economics 93 Current affairs, feminism 94 and politics History, biography and memoir 98 2 LPA 2018 Crime and thrillers THE KENNEDY MOMENT Peter Adamson ‘It reads like an Elmore Leonard novel, only with more emotion and more depth. I was spellbound, in genuine suspense, the writing is so damned good.’ Adam Fifield Compelling and convincing political thriller about five professionals at the top of their careers who hatch an ‘unthinkable’ plot to blackmail the government of the United States. -
Gustavus Quarterly
01 Fall 07 masters.2bak:Winter 03-04 MASTERS.1 8/8/07 11:11 AM Page 1 THE GustavusGustavus Adolphus College Fall 2007 QUARTERLY BigBig stinkstink onon campuscampus Plus I Three Views of Virginia I Stadiums Come and Go I Stringing Along with the Rydell Professor 01 Fall 07 masters.2bak:Winter 03-04 MASTERS.1 8/8/07 11:11 AM Page 2 G THE GUSTAVUS QUARTERLY Fall 2007 • Vol. LXIII, No. 4 Managing Editor Steven L. Waldhauser ’70 [email protected] Alumni Editors Randall M. Stuckey ’83 [email protected] Barbara Larson Taylor ’93 [email protected] Design Sharon Stevenson [email protected] Contributing Writers Laura Behling, Kathryn Christenson, Gwendolyn Freed, Teresa Harland ’94, Tim Kennedy ’82, Donald Myers ’83, Brian O’Brien, Paul Saulnier, Dana Setterholm ’07, Randall Stuckey ’83, Matt Thomas ’00, Thomas Young ’88 Contributing Photographers Anders Björling ’58, Ashley Henningsgaard ’07, Joel Jackson ’71, Joe Lencioni ’05, Tom Roster, Wayne Schmidt, Sharon Stevenson, Matt Thomas ’00, Stan Waldhauser ’71 Articles and opinions presented in this magazine do not necessarily reflect the views of the editors or official policies of the College or its board of trustees. The Gustavus Quarterly (USPS 227-580) is published four times annually, in February, May, August, and November, by Gustavus Adolphus College, St. Peter, Minn. Periodicals postage is paid at St. Peter, MN 56082, and additional mailing offices. It is mailed free of charge to alumni and friends of the College. Circulation is approximately 35,000. Postmaster: Send address changes to The Gustavus Quarterly, Office of Alumni Relations, Gustavus Adolphus College, 800 W. -
The Strong and Weak Senses of Theory-Ladenness of Experimentation: Theory-Driven Versus Exploratory Experiments in the History of High-Energy Particle Physics
[Accepted for Publication in Science in Context] The Strong and Weak Senses of Theory-Ladenness of Experimentation: Theory-Driven versus Exploratory Experiments in the History of High-Energy Particle Physics Koray Karaca University of Wuppertal Interdisciplinary Centre for Science and Technology Studies (IZWT) University of Wuppertal Gaußstr. 20 42119 Wuppertal, Germany [email protected] Argument In the theory-dominated view of scientific experimentation, all relations of theory and experiment are taken on a par; namely, that experiments are performed solely to ascertain the conclusions of scientific theories. As a result, different aspects of experimentation and of the relation of theory to experiment remain undifferentiated. This in turn fosters a notion of theory- ladenness of experimentation (TLE) that is too coarse-grained to accurately describe the relations of theory and experiment in scientific practice. By contrast, in this article, I suggest that TLE should be understood as an umbrella concept that has different senses. To this end, I introduce a three-fold distinction among the theories of high-energy particle physics (HEP) as background theories, model theories and phenomenological models. Drawing on this categorization, I contrast two types of experimentation, namely, “theory-driven” and “exploratory” experiments, and I distinguish between the “weak” and “strong” senses of TLE in the context of scattering experiments from the history of HEP. This distinction enables to identify the exploratory character of the deep-inelastic electron-proton scattering experiments— performed at the Stanford Linear Accelerator Center (SLAC) between the years 1967 and 1973—thereby shedding light on a crucial phase of the history of HEP, namely, the discovery of “scaling”, which was the decisive step towards the construction of quantum chromo-dynamics (QCD) as a gauge theory of strong interactions.