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Curriculum Vitae Dr
Curriculum Vitae Dr. rer. nat. Michael Wohlgenannt Universit´adel Piemonte Orientale Facolt´adi Scienze M.F.N. Dipartimento di Scienze e Tecnologie Avanzate Via Bellini 25/G, I-15100 Alessandria, Italy. Tel.: +39-0131-360163 [email protected] Personal data Date of birth: April 1, 1974 Place of birth: Dornbirn, Austria Nationality: Austrian Languages: German (mother tongue), English (fluent). Education Ludwig-Maximilians-Universit¨at M¨unchen, 1999 - 2003 Doctor rerum naturalium in mathematical physics - with magna cum laude Advisor: Prof. Julius Wess Thesis: Field Theoretical Models on Non-Commutative Spaces Karl-Franzens-Universit¨at Graz, 1992 - 1998 Magister Rerum Naturalium in theoretical physics - mit Auszeichnung Advisor: Prof. Christian B. Lang Thesis: The Schwinger Model - From Strong Coupling to Fixed-Point Actions University of Kent at Canterbury, 1994 - 1995 Diploma in Physics (B.Sc.) - with Distinction Tutor: Prof. John Rogers Theoretical essay: Non-Linear Coupled Pendulum 1 Experience Universita degli studi del Piemonte Orientale, Alessandria (Italy), from June 2008, Postdoctoral position Universit¨at Wien, from Jan 2008 - May 2008 Postdoctoral position, Fonds zur F¨orderung der wissenschaftlichen Forschung (Austrian Science Fund) project P20017-N16 The Erwin Schr¨odinger International Institute for Mathematical Physics, Vienna, July 2007 - Jan 2008 Junior Research Fellow Universit¨at Wien, Jan 2006 - Jun 2007 Postdoctoral position, Fonds zur F¨orderung der wissenschaftlichen Forschung (Austrian Science Fund) -
Jul/Aug 2013
I NTERNATIONAL J OURNAL OF H IGH -E NERGY P HYSICS CERNCOURIER WELCOME V OLUME 5 3 N UMBER 6 J ULY /A UGUST 2 0 1 3 CERN Courier – digital edition Welcome to the digital edition of the July/August 2013 issue of CERN Courier. This “double issue” provides plenty to read during what is for many people the holiday season. The feature articles illustrate well the breadth of modern IceCube brings particle physics – from the Standard Model, which is still being tested in the analysis of data from Fermilab’s Tevatron, to the tantalizing hints of news from the deep extraterrestrial neutrinos from the IceCube Observatory at the South Pole. A connection of a different kind between space and particle physics emerges in the interview with the astronaut who started his postgraduate life at CERN, while connections between particle physics and everyday life come into focus in the application of particle detectors to the diagnosis of breast cancer. And if this is not enough, take a look at Summer Bookshelf, with its selection of suggestions for more relaxed reading. To sign up to the new issue alert, please visit: http://cerncourier.com/cws/sign-up. To subscribe to the magazine, the e-mail new-issue alert, please visit: http://cerncourier.com/cws/how-to-subscribe. ISOLDE OUTREACH TEVATRON From new magic LHC tourist trail to the rarest of gets off to a LEGACY EDITOR: CHRISTINE SUTTON, CERN elements great start Results continue DIGITAL EDITION CREATED BY JESSE KARJALAINEN/IOP PUBLISHING, UK p6 p43 to excite p17 CERNCOURIER www. -
CERN Inaugurates LHC Cyrogenics
FACES AND PLACES SYMPOSIUM CERN inaugurates LHC cyrogenics Inauguration and ribbon-cutting ceremony of LHC cryogenics by CERN officials: from left, Giorgio Passardi, leader of cryogenics for experiments group; Philippe Lebrun, head of the accelerator Members of the CERN cryogenic groups in front of the Globe of technology department; Giorgio Brianti, founder of the LHC Science and Innovation, where the symposium took place. (Globe project; Lyn Evans, LHC project leader and Laurent Tavian, leader conception T Buchi, Charpente Concept and H Dessimoz, Group H.) of the cryogenics for accelerators group. The beginning of June saw the start of a coils operating at 1.9 K. Besides enhancing Tennessee. Although the commissioning new phase at the LHC project, with the the performance of the niobium-titanium work is far from finished, the cyrogenics inauguration of LHC cryogenics. This was superconductor, this temperature regime groups at CERN felt that after 10 years of marked with a symposium in the Globe makes use of the excellent heat-transfer construction it was now a good time to of Science and Innovation attended by properties of helium in its superfluid state. celebrate, organizing the Symposium for the 178 representatives of the research The design for the LHC cryogenics had to Inauguration of LHC Cryogenics that took institutes involved and industrial partners. incorporate both newly ordered and reused place on 31 May-1 June at CERN's Globe of It also coincided with the stable low- refrigeration plant from LEP operating Science and Innovation. After an inaugural temperature operation of the cryogenic plant at 4.5 K – together with a second stage address by CERN’s director-general, for sector 7–8, the first sector to be cooled operating at 1.9 K – in a system that could Robert Aymar, the programme included down (CERN Courier May 2007 p5). -
Final Report
Revealing the Hidden Nature of Space and Time: Charting the Course for Elementary Particle Physics Committee on Elementary Particle Physics in the 21st Century, National Research Council ISBN: 0-309-66039-4, 176 pages, 7 x 10, (2006) This free PDF was downloaded from: http://www.nap.edu/catalog/11641.html Visit the National Academies Press online, the authoritative source for all books from the National Academy of Sciences, the National Academy of Engineering, the Institute of Medicine, and the National Research Council: • Download hundreds of free books in PDF • Read thousands of books online, free • Sign up to be notified when new books are published • Purchase printed books • Purchase PDFs • Explore with our innovative research tools Thank you for downloading this free PDF. If you have comments, questions or just want more information about the books published by the National Academies Press, you may contact our customer service department toll-free at 888-624-8373, visit us online, or send an email to [email protected]. This free book plus thousands more books are available at http://www.nap.edu. Copyright © National Academy of Sciences. Permission is granted for this material to be shared for noncommercial, educational purposes, provided that this notice appears on the reproduced materials, the Web address of the online, full authoritative version is retained, and copies are not altered. To disseminate otherwise or to republish requires written permission from the National Academies Press. Revealing the Hidden Nature of Space and Time: Charting the Course for Elementary Particle Physics http://www.nap.edu/catalog/11641.html REVEALING THE HIDDEN NATURE OF SPACE AND TIME Charting the Course for Elementary Particle Physics Committee on Elementary Particle Physics in the 21st Century Board on Physics and Astronomy Division on Engineering and Physical Sciences THE NATIONAL ACADEMIES PRESS Washington, D.C. -
Die Entdeckung Des Higgs-Teilchens Am CERN
Die Entdeckung des Higgs-Teilchens am CERN Prof. Karl Jakobs Physikalisches Institut Universität Freiburg From the editorial: “The top Breakthrough of the Year – the discovery of the Higgs boson – was an unusually easy choice, representing both a triumph of the human intellect and the culmination of decades of work by many thousands of physicists and engineers.” Nobel-Preis für Physik 2013: François Englert und Peter Higgs “ … for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of sub-atomic particles, and which recently was confirmed through the discovery of the predicted fundamental particle, by the ATLAS and CMS experiments at CERN’s Large Hadron Collider.” EPS Prize 2013: The 2013 High Energy and Particle Physics Prize, for an outstanding contribution to High Energy Physics, is awarded to the ATLAS and CMS collaborations, “for the discovery of a Higgs boson, as predicted by the Brout-Englert-Higgs mechanism”, and to Michel Della Negra, Peter Jenni, and Tejinder Virdee, “for their pioneering and outstanding leadership rôles in the making of the ATLAS and CMS experiments”. Physik-Journal Februar 2015: “.. Obwohl in diesen großen Kollaborationen eine große Zahl von Forschern mitarbeitet, ist es möglich, einzelne Forscherpersönlichkeiten herauszuheben, deren Ideen und Arbeit für den Erfolg des Experiments von besonderer Bedeutung waren. Zu diesen gehört neben den Sprechern der Experimente Karl Jakobs.” The Standard Model of Particle Physics γ mW ≈ 80.4 GeV mZ ≈ 91.2 GeV (i) Matter particles: quarks and leptons (spin ½, fermions) (ii) Four fundamental forces: described by quantum field theories (except gravitation) à massless spin-1 gauge bosons (iii) The Higgs field à scalar field, spin-0 Higgs boson The Brout-Englert-Higgs Mechanism F. -
2014André Lagarrigue Prize
2014 André Lagarrigue Prize The international jury1 of the André Lagarrigue prize, meeting under the chairmanship of Jacques Martino, director of IN2P3, has awarded the 2014 prize to Michel Della Negra, physicist emeritus of the CERN Physics Department, presently CMS emeritus at Imperial College, London. The award, established in 2005 under the aegis of the French Physical Society, pays tribute to Professor André Lagarrigue, director of the Laboratory of Linear Accelerator (LAL, Orsay) from 1969 to 1975, who had a major role in the discovery of neutral weak interactions with the Gargamelle bubble chamber at CERN, thus establishing the validity of the electroweak theory. The award, co-funded by the CEA, CERN, Ecole Polytechnique, IN2P3-CNRS, LAL and Université Paris-Sud, is awarded every two years. Born leader, with deep understanding of physics, in direct André Lagarrigue’s lineage, Michel Della Negra has shown outstanding qualities as a builder of experimental devices of great complexity. He is one of the major players in two fundamental discoveries: the W and Z bosons, carriers of the weak interaction with the UA1 SppS, and the Higgs boson with CMS at the LHC. Born in 1942, a graduate of the Ecole Polytechnique, Paris, he begins his career at the Laboratory of Nuclear Physics of the College de France. He defends his thesis in 1967 on the study of proton-antiproton annihilations at rest, using bubble chamber photographs. He is recruited by the CNRS in 1968. During a postdoctoral stay at SLAC (1970-1972), he joins the first deep inelastic scattering experiment using a 17 GeV muon beam interacting on the protons of a rapid cycling bubble chamber, and he is given the responsibility of the muon system. -
30 Years of Hadron Colliders
30 Years of Hadron Colliders M. Della Negra/CERN Islamabad, 16 December 2004 Hadron & Electron Colliders 4 10 Accelerators LHC electron 3 10 hadron Higgs boson Tevatron SppS LEPII t quark 2 10 SLC TRISTAN W, Z bosons PEP CESR 1 10 ISR SPEAR b quark c quark 0 10 Prin-Stan Constituent CM Energy (GeV) Parton-parton C.M. Energy (GeV) C.M. Parton-parton s quark -1 10 1960 1970 1980 1990 2000 2010 StartingStarting Year Year Michel Della Negra/Islamabad 16 December 2004 2 Intersecting Storage Rings, ISR First hadron collider (p-p) (approved by CERN Council Dec 1965) CCRS 1976 First collisions in Jan 1971 √s = 23, 30, 44, 53, 62 GeV L~ 1031cm-2s-1 Most experiments: Inclusive spectra in small solid angle spectrometers looking at forward angles. Three Collaborations looked at large angle: BS, SS, CCR (1973) Excess at large pT Parton-parton collisions? Michel Della Negra/Islamabad 16 December 2004 3 -8 ISR: the pT puzzle (1) Expectations from the parton model: From dimension arguments the parton-parton scattering cross- CCRS 1976 section should behave as dσ = f (tˆ / sˆ )sˆ −2 dtˆ Then the inclusive cross- section should behave as -4 pT at fixed xT: d 3σ 1 E 3 = 4 f (xT ,cosθ) dp pT 2 p with x = T T s d 3σ 1 -8 E 3 ≈ A 8 exp(−26xT ) But CCRS data scale as pT dp pT Michel Della Negra/Islamabad 16 December 2004 4 -8 ISR: the pT puzzle (2) -8 Force pT ? meson+quark→ meson+quark (CIM) or adhoc “black box” cross section (FF1) dσ 1 1 ∝ → dtˆ sˆ 2 sˆ 4 Or improve parton model : CCHK 1977 keep natural dimensional scaling for pointlike constituents. -
The Future of Fermilab
CERN & Fermilab LHC & Neutrinos Nigel S. Lockyer CERN Council 3/16/2015 P5 Report…still very impactful in Washington • P5 report has had and is having a major impact on US planning for particle physics because: – Excellent report that made difficult choices and has focused field – Community support very high • Secretary of Energy has expressed strong support for report because of community support • P5 top priorities: LHC and Neutrinos Nigel Lockyer | CERN Council 2015 CERN/DOE Agreement: The Signers…Moniz, Heuer, Cordova Nigel Lockyer | CERN Council 2015 CERN & Fermilab….together we are stronger • CERN is the world’s leading high energy lab now that Fermilab has relinquished the energy frontier with closing of Tevatron • CERN is mandated to “steward” all European particle physics • Fermilab is only “single program” HEP laboratory in US • CERN needs the US to execute the HL-LHC successfully and we need CERN to help with LBNF • By supporting a world class long baseline neutrino program in US, CERN is supporting the European neutrino community • CERN and Fermilab both have tremendous technical depth • Interests & technology overlap on FCC • Success of both CERN & Fermilab are highly intertwined Nigel Lockyer | CERN Council 2015 NY Times:U.S. & European Scientists Sign Cooperation Pact • “a model for the kinds of international scientific collaboration that can enable breakthrough insights and innovations.”…John Holdren, President’s Science Advisor • “This agreement is also historic since it formalizes CERN’s participation in U.S.-based programs such as prospective future neutrino facilities for the first time.” Rolf Heuer DG CERN • “Our research programs in the U.S. -
Data-Driven Estimation of Z Background Contributions to The
IEKP-KA/2011-21 Data-driven Estimation of Z0 Background Contributions to the + Higgs Search in the H τ τ − ! Channel with the CMS Experiment at the LHC Armin Burgmeier Diploma Thesis at the Physics Department of the Karlsruhe Institute of Technology Referent: Prof. Dr. G. Quast Institut für Experimentelle Kernphysik Korreferent: Prof. Dr. W. de Boer Institut für Experimentelle Kernphysik August 1, 2011 Deutsche Zusammenfassung Schon seit jeher erforschen Menschen systematisch ihre Umgebung und versuchen sie zu ihrem Vorteil zu verändern. Diese Anstrengungen haben den heutigen Wohlstand erst ermöglicht. Dennoch ist die gezielte Forschung heute intensiver denn je - ein Zeichen dafür dass noch längst nicht alles verstanden ist was es zu verstehen gibt und dass eine Entdeckung oftmals viele neue Fragen aufwirft. In der Grundlagenforschung wird die Erweiterung des Wissens der Menschheit an- gestrebt ohne gezielt Anwendungsfälle im Hinterkopf zu haben. Oft haben sich solche Entdeckungen später jedoch als äußerst nützlich erwiesen, darunter beispielsweise die Supraleitung. Die technischen Herausforderungen sind heutzutage so groß, dass alleine um die Experimente zu errichten neue Konzepte und Technologien entwickelt werden müssen. Das prominenteste Beispiel hierzu ist wohl das World Wide Web, das 1989 am Forschungszentrum CERN entwickelt wurde um Forschungsergebnisse innerhalb immer größer werdenden Teams austauschen zu können. Im Bereich der Elementarteilchenphysik, in den diese Arbeit einzuordnen ist, führten Messungen an Teilchenbeschleunigern und kosmischer Strahlung zur Entwicklung des Standardmodells der Teilchenphysik. Das Standardmodell beschreibt die kleinsten bisher bekannten Bauteile der Materie, genannt Teilchen, und mit Ausnahme der Gravitation auch deren Wechselwirkungen. Es erlaubt Rückschlüsse auf die Entwicklung des frühen Universums zu ziehen als auch Vorhersagen für zukünftige Experimente zu treffen. -
Julius–Maximilians–Universität Würzburg
Julius–Maximilians–Universitat¨ Wurzburg¨ Institut f¨ur Theoretische Physik und Astronomie Theoretische Physik II A Supersymmetric Higgsless Model Of Electroweak Symmetry Breaking Diploma thesis by Karoline K¨opp Supervised by Prof. Dr. Thorsten Ohl 31. 03. 2009 Zusammenfassung Die vorliegende Diplomarbeit besch¨aftigt sich mit einem supersymmetrischen higgslosen Model mit einer gekrummten¨ Extradimension. In Modellen mit kompakten zus¨atzlichen r¨aumlichen Di- mensionen kann die elektroschwache Eichsymmetrie ohne ein Higgs-Feld, wie es vom Standard- modell der Elementarteilchenphysik vorhergesagt wird, durch Randbedingungen gebrochen wer- den. Die Erforschung dieser Modellen stellt daher einen alternativen Zugang zum Verst¨andnis der elektroschwachen Symmetriebrechung dar, deren zugrundeliegender Mechanismus bisher experimentell noch nicht bestimmt werden konnte. Modelle mit einem exponentiell gekrummten¨ Randall-Sundrum Raumzeithintergrund, haben sich in den vergangenen Jahren als besonders vielversprechend erwiesen. In einer Erweiterung [1] des ursprunglichen¨ Modells [2] werden gekrummte¨ Extradimensionen mit Supersymmetrie (SUSY) verbunden. Der Schwerpunkt dieser Arbeit liegt auf der Untersuchung einer neuen und vergleichsweise sanften Art der SUSY-Brechung auf einer getrennten infraroten Brane“ in der ” neuen Dimension. Die Arbeit ist wie folgt aufgebaut: Zun¨achst werden in Kapitel eins und zwei die notwendigen Grundlagen zu Extradimensionen und Supersymmetrie besprochen, um das Modell im dritten Kapitel einfuhren¨ zu k¨onnen. Der Aufbau des Modells auf zwei back-to-back“ Intervallen und ” das resultierende Massenspektrum bilden den Ausgangspunkt fur¨ alle weiteren Untersuchungen. Die konkrete Wahl der Randbedingungen und Modellparameter wird in den anschliessenden Kapiteln vier und funf¨ fur¨ den Eich- und den Materiesektor getrennt diskutiert und konkret begrundet.¨ Wir untersuchen die Kaluza-Klein Wellenfunktionen und geben N¨aherungsl¨osungen fur¨ die leichtesten Moden des Spektrums an. -
ESI NEWS Volume 2, Issue 2, Autumn 2007
The Erwin Schrodinger¨ International Boltzmanngasse 9/2 Institute for Mathematical Physics A-1090 Vienna, Austria ESI NEWS Volume 2, Issue 2, Autumn 2007 Editorial lation. Klaus Schmidt JULIUS WESS was a key participant Contents in the workshop Interfaces between Math- Editorial 1 ematics and Physics in Vienna in May This summer saw the 1991 which laid the foundation for the Er- Wolfgang Kummer 1935 – 2007 1 deaths of two eminent win Schrodinger¨ Institute, both scientifi- Julius Wess 1934 – 2007 2 physicists who had cally and politically. He helped to impress had close links with on the Minister for Science at that time, Reminiscences of old Friendships 2 the ESI over many Erhard Busek, the desirability and, indeed, In memoriam Julius Wess 3 years and to whom necessity of creating a research institute the ESI remains grate- to provide a meeting place where scien- Entanglement in many-body quan- ful for their friendship tists from Eastern Europe could interact tum physics 4 over many years. with the international scientific community Kazhdan’s Property (T) 8 WOLFGANG KUMMER, Professor for at a period of great political and financial Theoretical Physics at the Vienna Univer- uncertainty in the post-communist world. Perturbative Quantum Field The- sity of Technology (VUT), was a mem- Julius Wess helped the ESI on a second oc- ory 9 ber of the ‘Vorstand’ (Governing Board) casion, when Walter Thirring fell seriously Interaction of Mathematics and of the Erwin Schrodinger¨ Institute from ill in early 1992 and Julius Wess chaired Physics 11 1993 until 2005 and was elected Honorary a second workshop on Interfaces between Member of the Institute when he resigned Mathematics and Physics in March 1992 ESI News 11 from the board in 2005. -
Tevatron Physics
Tevatron Physics Welcome new Fermilab director Nigel Lockyer Reinhard Schwienhorst Outline • Tevatron proton-antiproton collider • Heavy flavor production • QCD events • Electroweak results • Top quark measurements • Higgs boson coupling to fermions • Conclusions 2 Reinhard Schwienhorst Tevatron at Fermilab •Run II from 2002 to 2011 •CDF and D0: 400 + 400 members from 60 + 70 institutions 3 Reinhard Schwienhorst Tevatron collider in Run II • proton-antiproton collider • 1.96 TeV • 12 fb-1 delivered • 10 fb-1 recorded per experiment • 10 pByte dataset (incl. MC) per experiment 4 Reinhard Schwienhorst Unique Tevatron physics • proton-antiproton collider - quark-antiquark interactions - top pairs - forward-backward asymmetries - single top in the s-channel • lower CM energy - Higgs to bb in associated production - lower QCD background - coupling to fermions • Much less pileup than LHC - clean events, low trigger thresholds - precision top quark mass - precision W boson mass 5 Reinhard Schwienhorst Heavy flavor physics • Trigger and detector systems for heavy flavor - low-pT di-muons and regular reversal of B field (DØ) - track trigger and high-precision tracking (CDF) 6 Reinhard Schwienhorst CP Asymmetries • Tevatron Proton-Antiproton initial state - CP conserving • Look for neutral meson mixing • Look for asymmetries in heavy flavor decay rates • Sensitive to new physics - in weak and strong interactions 7 Reinhard Schwienhorst Like-sign di-muon asymmetry • DØ di-muon asymmetry in semi-leptonic B decays - Significance 3.9 s.d. PRD 84, 052007