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Emerging Issues in Cosmology & Particle Physics
Organizing Committee Patron Principal, Siksha Bhavana, Visva-Bharati Conveners Swarup Kumar Majee & Biswajit Pandey Program Advisory Committee AJIT KEMBHAVI, IUCAA, India AJIT SRIVASTAVA, IOPB , India International Conference on ALAKABHA DATTA, Univ. of Mississippi, USA AMITAVA RAYCHAUDHURI, Univ. Of Calcutta, India AMOL DIGHE, TIFR, India Emerging Issues ASANTHA R. COORAY, UC-Irvine, USA BISWARUP MUKHOPADHYAYA, HRI, India CHENG-WEI CHIANG, NTU, Taiwan in DIEGO PAVON, AUB, Spain EUNG JIN CHUN, KIAS, South Korea GORAN SENJANOVIC, INFN, Italy Cosmology & KAI-FENG CHEN, NTU, Taiwan NABA KUMAR MONDAL, SINP, India NOBUCHIKA OKADA, Univ. of Alabama, USA Particle Physics Organized by QAISAR SHAFI, Univ. of Delaware, USA RABINDRA MOHAPATRA, Univ. of Maryland, USA Department of Physics, RENNAN BARKANA, Tel Aviv University, Israel January 12 -14, 2020 SOMAK RAYCHAUDHURY, IUCAA, India VISVA-BHARATI UNIVERSITY SOMNATH BHARADWAJ, IIT, Kharagpur, India Visva-Bharati University THOMAS BUCHERT, CRAL, Univ. of Lyon, France Santiniketan Email: [email protected] UTPAL SARKAR, IIT, Kharagpur, India Mob.: (+91) 7908272177/ 7602198961 / 8972889271 VOLKER SPRINGEL, MPA, Garching, Germany India Conference webpage: https://indico.cern.ch/event/849205/ Local Organizing Committee Registration Fee Details All faculty members of the Department Indian participants Foreign participants of Physics, Visva-Bharati university Faculty Members INR 4000 USD 200 Ph.D. Students/ Postdocs INR 2000 USD 100 Conference Topics Undergraduate/M.Sc. Students INR 500 USD 75 The registration fee will cover registration kits, refreshments, lunch, dinner, conference dinner and Dark Matter & Dark Energy local transportation. Neutrino Physics Accelerator Physics The main objective of the conference is to provide a common platform to discuss the emerging issues Physics Beyond the Standard Model in cosmology and particle physics, to set out possible future collaborative research works and to nail 21 cm Cosmology down some existing common problems. -
Table of Contents (Print)
PERIODICALS PHYSICAL REVIEW Dä For editorial and subscription correspondence, Postmaster send address changes to: please see inside front cover (ISSN: 1550-7998) APS Subscription Services P.O. Box 41 Annapolis Junction, MD 20701 THIRD SERIES, VOLUME 90, NUMBER 5 CONTENTS D1 SEPTEMBER 2014 RAPID COMMUNICATIONS Measurement of the electric charge of the top quark in tt¯ events (8 pages) ........................................................ 051101(R) V. M. Abazov et al. (D0 Collaboration) BRST-symmetry breaking and Bose-ghost propagator in lattice minimal Landau gauge (5 pages) ............................. 051501(R) Attilio Cucchieri, David Dudal, Tereza Mendes, and Nele Vandersickel ARTICLES pffiffiffi Search for supersymmetry in events with four or more leptons in s ¼ 8 TeV pp collisions with the ATLAS detector (33 pages) ................................................................................................................................. 052001 G. Aad et al. (ATLAS Collaboration) pffiffiffi Low-mass vector-meson production at forward rapidity in p þ p collisions at s ¼ 200 GeV (12 pages) .................. 052002 A. Adare et al. (PHENIX Collaboration) Measurement of Collins asymmetries in inclusive production of charged pion pairs in eþe− annihilation at BABAR (26 pages) 052003 J. P. Lees et al. (BABAR Collaboration) Measurement of the Higgs boson mass from the H → γγ and H → ZZÃ → 4l channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector (35 pages) ................................................................... 052004 G. Aad et al. (ATLAS Collaboration) pffiffiffi Search for high-mass dilepton resonances in pp collisions at s ¼ 8 TeV with the ATLAS detector (30 pages) .......... 052005 G. Aad et al. (ATLAS Collaboration) Search for low-mass dark matter with CsI(Tl) crystal detectors (6 pages) .......................................................... 052006 H. -
UC Berkeley UC Berkeley Electronic Theses and Dissertations
UC Berkeley UC Berkeley Electronic Theses and Dissertations Title Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It Permalink https://escholarship.org/uc/item/2sv8b4x5 Author Mcgehee Jr., Robert Stephen Publication Date 2020 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It by Robert Stephen Mcgehee Jr. A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Physics in the Graduate Division of the University of California, Berkeley Committee in charge: Professor Hitoshi Murayama, Chair Professor Alexander Givental Professor Yasunori Nomura Summer 2020 Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It Copyright 2020 by Robert Stephen Mcgehee Jr. 1 Abstract Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It by Robert Stephen Mcgehee Jr. Doctor of Philosophy in Physics University of California, Berkeley Professor Hitoshi Murayama, Chair An abundance of evidence from diverse cosmological times and scales demonstrates that 85% of the matter in the Universe is comprised of nonluminous, non-baryonic dark matter. Discovering its fundamental nature has become one of the greatest outstanding problems in modern science. Other persistent problems in physics have lingered for decades, among them the electroweak hierarchy and origin of the baryon asymmetry. Little is known about the solutions to these problems except that they must lie beyond the Standard Model. The first half of this dissertation explores dark matter models motivated by their solution to not only the dark matter conundrum but other issues such as electroweak naturalness and baryon asymmetry. -
Future Experimental Programs
Future Experimental Programs Hitoshi Murayama Department of Physics, University of California, Berkeley, California 94720, USA Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa 277-8583, Japan E-mail: [email protected], [email protected], [email protected] Abstract. I was asked to discuss future experimental programs even though I'm a theorist. As a result, I present my own personal views on where the field is, and where it is going, based on what I myself have been working on. In particular, I discuss why we need expeditions into high energies to find clues to where the relevant energy scale is for dark matter, baryon asymmetry, and neutrino mass. I also argue that the next energy frontier machine should be justified on the basis of what we know, namely the mass of the Higgs boson, so that we will learn what energy we should aim at once we nail the Higgs sector. Finally I make remarks on dark energy. arXiv:1401.0966v1 [hep-ph] 6 Jan 2014 Future Experimental Programs Murayama 2 1. Introduction The discovery of a \Higgs-like particle" on July 4, 2012 was a truly historic moment in the history of science [1, 2]. Many of us in the United States watched the seminar at CERN over webcast in the midnight hours. Given that it was announced on the Independence Day of the United States, we celebrated the Higgsdependence Day in the early morning. -
A Journey Into the Quantum Universe
Dr. Hitoshi Murayama is a professor in the Department of Physics at the University of California, Berkeley as well as Why are we here? the founding director of the Kavli Institute for the Physics and Mathematics of the Universe at the University of Tokyo. A Journey Into In October 2014, he gave a speech at the United Nations headquarters in New York about how science unites people the Quantum and brings peace. He received the Yukawa Commemoration Prize in Theoretical Physics and is a Fellow of the American Physical Society and the American Academy of Arts and Universe Sciences. In this interview, we discuss Dr. Murayama’s work at the intersection of theoretical particle physics, string theory, and cosmology. Interview with Dr. Hitoshi Murayama : How did your early experiences in Japan shape your career BSJand motivations? What led you to practice physics in both the United States and Japan? : It started when I was a little kid. I had really bad asthma, HMso every year, I missed quite a few days of school. When I was at home, I did not have anything to do but watch TV, and on TV, there were some very interesting educational programs. These programs are what got me interested in science and math. Then, throughout university, I had a very keen interest in the area of physics that I am working in right now, namely at the interface of theoretical particle physics and cosmology. It turned out that, back in those days, this was not a very active area of physics in Japan, so I did not really get to further my studies in this area. -
Qaisar Shafi Studied for His B
Qaisar Shafi received his BSc and his PhD in Theoretical Physics from Imperial College, London. England. His PhD advisor was the late Abdus Salam who received the Nobel Prize for Theoretical Physics in 1979. After completing his PhD, Professor Shafi held prestigious postdoctoral and research fellowships including an Alexander von Humboldt fellowship at the Universities of Munich and Aachen, Germany, and a senior fellowship at CERN in Geneva, Switzerland. He also completed his Habilitation with venia legendi at the University of Freiburg, Germany. He joined the Bartol Research Institute at the University of Delaware in 1983. Throughout his career at the University of Delaware, Professor Shafi has maintained close ties to the ICTP (International Center for Theoretical Physics) in Trieste, Italy where he directed more than a dozen summer schools in High Energy Physics and Cosmology. He also (co-)directed a NATO school and several summer schools in High Energy Physics organized under BCSVPIN (an acronym denoting the countries Bangladesh, China, Sri Lanka, Vietnam, Pakistan, and India), an international science network, founded in collaboration with Abdus Salam and Jogesh Pati, and continued by Professor Shafi. Qaisar Shafi is an internationally recognized expert in Elementary Particle (High Energy) Physics and Cosmology; his current research areas include Higgs boson, supersymmetry, new physics at the LHC, dark matter particle, inflationary cosmology and primordial gravity waves, origin of matter in the universe and nature of dark energy. Professor Shafi has supervised a large number of postdoctoral fellows and PhD students, and created a global network of collaborators. Many of his former students and postdocs have become highly respected scientists in their home countries. -
Two Notions of Naturalness
For almost 40 years, the requirement that models of BSM physics be natural has heavily inuenced model-building in high-energy physics. Porter Williams (University of Pittsburgh) Two notions of naturalness February 28, 2018 1 / 60 The expectation of a natural solution to the hierarchy problem was probably the most popular argument for expecting new particles at the LHC. Porter Williams (University of Pittsburgh) Two notions of naturalness February 28, 2018 2 / 60 The Standard Model reigns supreme. As of today, the LHC has discovered no evidence for SUSY or any other mechanism for naturally stabilizing the weak scale. Porter Williams (University of Pittsburgh) Two notions of naturalness February 28, 2018 4 / 60 As of today, the LHC has discovered no evidence for SUSY or any other mechanism for naturally stabilizing the weak scale. The Standard Model reigns supreme. Porter Williams (University of Pittsburgh) Two notions of naturalness February 28, 2018 4 / 60 This has left many people in the HEP community unsure about how to proceed. Porter Williams (University of Pittsburgh) Two notions of naturalness February 28, 2018 5 / 60 Now What? Aspen 2013 - Higgs Quo Vadis Nathan Seiberg IAS TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: AAAAAA AA If neither supersymmetry nor any other sort of natural solution...appears in the data...[t]his would...give theorists a strong incentive to take the ideas of the multiverse more seriously. – Nima Arkani-Hamed (2012) Porter Williams (University of Pittsburgh) Two notions of naturalness February 28, 2018 8 / 60 If the electroweak symmetry breaking scale is anthropically xed, then we can give up the decades long search for a natural solution to the hierarchy problem. -
Cern Quick Facts 2017
BUDGET Total Member States’ and additional contributions 1141.7 million CHF COUNCIL CERN QUICK FACTS 2017 Normalized contributions from the Member States (%) Austria 2.17 Belgium 2.76 Bulgaria 0.29 Czech Republic 0.94 Denmark 1.77 Finland 1.35 MANAGEMENT France 14.32 Directorate Germany 20.44 Greece 1.20 Director-General Fabiola Gianotti Hungary 0.60 Director for Accelerators and Technology Frédérick Bordry Israel 1.49 Director for Finance and Human Resources Martin Steinacher Italy 10.62 Director for International Relations Charlotte Warakaulle Netherlands 4.77 Director for Research and Computing Eckhard Elsen Norway 2.90 Poland 2.82 Council Support John Pym Portugal 1.11 Internal Audit John Steel Romania 0.99 Legal Service Eva-Maria Gröniger-Voss Slovakia 0.48 Occupational Health & Safety and Environmental Protection Simon Baird Spain 7.22 Ombuds Sudeshna Datta Cockerill Sweden 2.73 Switzerland 3.92 Scientific Information Services Jens Vigen United Kingdom 15.10 Education, Communications and Outreach Ana Godinho Associate Member States in the pre-stage Host States Relations Friedemann Eder to Membership Media and Press Relations Arnaud Marsollier Cyprus 0.01 Member State Relations Pippa Wells Serbia 0.17 Non-Member State Relations Emmanuel Tsesmelis Slovenia 0.03 Protocol Service Wendy Korda Relations with International Organizations Olivier Martin Associate Member States India 1.03 Departments Pakistan 0.13 Beams (BE) Paul Collier Turkey 0.43 Engineering (EN) Roberto Losito Ukraine 0.09 Experimental Physics (EP) Manfred Krammer Finance -
Annual Report 2010 Report Annual IPMU ANNUAL REPORT 2010 April 2010 April – March 2011March
IPMU April 2010–March 2011 Annual Report 2010 IPMU ANNUAL REPORT 2010 April 2010 – March 2011 World Premier International Institute for the Physics and Mathematics of the Universe (IPMU) Research Center Initiative Todai Institutes for Advanced Study Todai Institutes for Advanced Study The University of Tokyo 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan TEL: +81-4-7136-4940 FAX: +81-4-7136-4941 http://www.ipmu.jp/ History (April 2010–March 2011) April • Workshop “Recent advances in mathematics at IPMU II” • Press Release “Shape of dark matter distribution” • Mini-Workshop “Cosmic Dust” May • Shaw Prize to David Spergel • Press Release “Discovery of the most distant cluster of galaxies” • Press Release “An unusual supernova may be a missing link in stellar evolution” June • CL J2010: From Massive Galaxy Formation to Dark Energy • Press Conference “Study of type Ia supernovae strengthens the case for the dark energy” July • Institut d’Astrophysique de Paris Medal (France) to Ken’ichi Nomoto • IPMU Day of Extra-galactic Astrophysics Seminars: Chemical Evolution August • Workshop “Galaxy and cosmology with Thirty Meter Telescope (TMT)” September • Subaru Future Instrumentation Workshop • Horiba International Conference COSMO/CosPA October • The 3rd Anniversary of IPMU, All Hands Meeting and Reception • Focus Week “String Cosmology” • Nishinomiya-Yukawa Memorial Prize to Eiichiro Komatsu • Workshop “Evolution of massive galaxies and their AGNs with the SDSS-III/BOSS survey” • Open Campus Day: Public lecture, mini-lecture and exhibits November -
Higgs Collider Phenomenology: Important Backgrounds, Naturalness Probes and the Electroweak Phase Transition
Higgs collider phenomenology: important backgrounds, naturalness probes and the electroweak phase transition. A Dissertation presented by Harikrishnan Ramani to The Graduate School in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Physics and Astronomy Stony Brook University August 2017 (include this copyright page only if you are selecting copyright through ProQuest, which is optional) Copyright by Harikrishnan Ramani 2017 Stony Brook University The Graduate School Harikrishnan Ramani We, the dissertation committee for the above candidate for the Doctor of Philosophy degree, hereby recommend acceptance of this dissertation Patrick Meade - Dissertation Advisor Associate Professor, Department of Physics and Astronomy George Sterman - Chairperson of Defense Distinguished Professor, Department of Physics and Astronomy Dmitri Tsybychev - Committee Member Associate Professor, Department of Physics and Astronomy Eder Izaguirre - Outside Member Assistant Physicist, Department of Physics, Brookhaven National Laboratory This dissertation is accepted by the Graduate School Charles Taber Dean of the Graduate School ii Abstract of the Dissertation Higgs collider phenomenology: important backgrounds, naturalness probes and the electroweak phase transition. by Harikrishnan Ramani Doctor of Philosophy in Physics and Astronomy Stony Brook University 2017 The Higgs boson discovered in 2012, might be the portal to new physics. With the Higgs as the common theme we present the following research arcs. In order to study the Higgs, it is important to have a very good handle on Standard model(SM) backgrounds. One such background process is SM WW production, which reported routine 3 sigma excesses in early run 1 of the LHC. However, experiments use Parton Showers for theoreti- cal prediction and this might be inadequate for exclusive cross-sections. -
Largest Temperature of the Radiation Era and Its Cosmological
View metadata, citation and similar papers at core.ac.ukLargest temperature of the radiation era brought to you by CORE and its cosmological implications provided by CERN Document Server Gian Francesco Giudice∗ CERN Theory Division, CH-1211 Geneva 23, Switzerland Edward W. Kolb NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500, and Department of Astronomy and Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433 Antonio Riotto Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy, and INFN, Sezione di Pisa, I-56127 Pisa, Italy (May 2000) The thermal history of the universe before the epoch of nucleosynthesis is unknown. The maxi- mum temperature in the radiation-dominated era, which we will refer to as the reheat temperature, may have been as low as 0.7 MeV. In this paper we show that a low reheat temperature has impor- tant implications for many topics in cosmology. We show that weakly interacting massive particles (WIMPs) may be produced even if the reheat temperature is much smaller than the freeze-out temperature of the WIMP, and that the dependence of the present abundance on the mass and the annihilation cross section of the WIMP differs drastically from familiar results. We revisit predic- tions of the relic abundance and resulting model constraints of supersymmetric dark matter, axions, massive neutrinos, and other dark matter candidates, nucleosynthesis constraints on decaying parti- cles, and leptogenesis by decay of superheavy -
On Future High-Energy Colliders
On Future High-Energy Colliders Gian Francesco Giudice CERN, Theoretical Physics Department, Geneva, Switzerland Abstract An outline of the physics reasons to pursue a future programme in high-energy colliders is presented. While the LHC physics programme is still in full swing, the preparations for the European Strategy for Particle Physics and the recent release of the FCC Conceptual Design Report bring attention to the future of high-energy physics. How do results from the LHC impact the future of particle physics? Why are new high-energy colliders needed? Where do we stand after the LHC discovery of the Higgs boson? Undoubtedly, the highlight of the LHC programme so far has been the discovery of the Higgs boson, which was announced at CERN on 4 July 2012. The result has had a profound impact on particle physics, establishing new fundamental questions and opening a new experimental programme aimed at exploring the nature of the newly found particle. The revolutionary aspect of this discovery can be understood by comparing it with the previous discovery of a new elementary particle { the one of the top quark, which took place at Fermilab in 1995. The situation at the time was completely different. The properties of the top quark were exactly what was needed to complete satisfactorily the existing theoretical framework and the new particle fell into its place like the missing piece of a jigsaw puzzle. Instead, the discovery of the Higgs boson leaves us wondering about many questions still left unanswered. The top quark was the culmination of a discovery process; the Higgs boson appears to be the starting point of an exploration process.