IOP SCHOOLS LECTURE. Particles and the Universe
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The Institute of Physics
REGIONAL NEWS 21 The Institute of Physics The forerunner of the Institute of do involves physics - switching on a light, physicists in commerce and industry. The Physics, the Physical Society of London, making a phone call or even baking a Council has established several Profession was created in 1874 at a time when the potato in a microwave oven. In industry, al Groups in areas such as consultancy, understanding of the physical world had physicists are helping companies to devel engineering physics and advanced been given an enormous impetus with the op novel materials that have physical prop systems. publication by James Clerk Maxwell of his erties more versatile that those previously In these days of shrinking science theory of electromagnetism. The creation developed, and they are designing new budgets, the academic physics community of the Physical Society was the response of generations of microchips which are has turned increasingly to its professional the embryonic society of professional and smaller and hence faster. The information representative, the Institute of Physics, to amateur physicists in Britain to what they revolution within which we are currently lobby Government about the importance believed was a major progression of their being buffeted would have been impos and relevance of physics. In common with ideas. Indeed, one could say that it was at sible without physicists and their research other science subjects, calls to justify Gov this time that much of physics began to - transistors, liquid crystal displays, mag ernment expenditure have increased in take on the appearance we recognize netic discs, optical fibres, semiconductor recent years. -
The WISP Paradigm
The WISP Paradigm Javier Redondo Max Planck Institut (Werner Heisenberg Institut) Munich MPI 14/12/2009 Hidden Sectors in PBSM Extensions of SM often include Hidden Sectors Fields coupled to SM only through gravity or high energy “messenger” fields... This is the case in string theory (compactifications produce many particles, new gauge symmetries, and KKs) Desirable for SUSY Also in GUT theories... Massive Messengers Standard Model Hidden Sector e−, ν, q, γ, W ±, Z, g...H a, γ, ψMCP... Hidden Sectors can be quite complicated we certainly don’t know! Hidden Sector BIG guys Light guys (live in the mountains) (mass is protected by a symmetry) Goldstone Chiral Bosons fermions Gauge and more... Bosons hard to detect; not only as hidden they have suppressed interactions but as hidden, also heavy! light they have no thresholds and they can have maybe at LHC or ILC... coherent forces Let symmetry be our guide ! Hidden Sectors can be quite complicated we certainly don’t know! Hidden Sector BIG guys Light guys (live in the mountains) (mass is protected by a symmetry) Goldstone Chiral Bosons WISPsfermions (very) weakly interacting sub-eV Particles Gauge and more... Bosons hard to detect; not only as hidden they have suppressed interactions but as hidden, also heavy! light they have no thresholds and they can have maybe at LHC or ILC... coherent forces Let symmetry be our guide ! Axion-like-Particles and Axions 1 µν Axions are GB of a color anomalous U(1) Tr Gµν G a 4fa { } The color anomalous term creates a potential with CP conserving minimum Solution to Strong CP which gives the axion a mass m f 10 10GeV 1 m π π 0.6 meV − − . -
Axions & Wisps
FACULTY OF SCIENCE AXIONS & WISPS STEPHEN PARKER 2nd Joint CoEPP-CAASTRO Workshop September 28 – 30, 2014 Great Western, Victoria 2 Talk Outline • Frequency & Quantum Metrology Group at UWA • Basic background / theory for axions and hidden sector photons • Photon-based experimental searches + bounds • Focus on resonant cavity “Haloscope” experiments for CDM axions • Work at UWA: Past, Present, Future A Few Useful Review Articles: J.E. Kim & G. Carosi, Axions and the strong CP problem, Rev. Mod. Phys., 82(1), 557 – 601, 2010. M. Kuster et al. (Eds.), Axions: Theory, Cosmology, and Experimental Searches, Lect. Notes Phys. 741 (Springer), 2008. P. Arias et al., WISPy Cold Dark Matter, arXiv:1201.5902, 2012. [email protected] The University of Western Australia 3 Frequency & Quantum Metrology Research Group ~ 3 staff, 6 postdocs, 8 students Hosts node of ARC CoE EQuS Many areas of research from fundamental to applied: Cryogenic Sapphire Oscillator Tests of Lorentz Symmetry & fundamental constants Ytterbium Lattice Clock for ACES mission Material characterization Frequency sources, synthesis, measurement Low noise microwaves + millimetrewaves …and lab based searches for WISPs! Core WISP team: Stephen Parker, Ben McAllister, Eugene Ivanov, Mike Tobar [email protected] The University of Western Australia 4 Axions, ALPs and WISPs Weakly Interacting Slim Particles Axion Like Particles Slim = sub-eV Origins in particle physics (see: strong CP problem, extensions to Standard Model) but become pretty handy elsewhere WISPs Can be formulated as: Dark Matter (i.e. Axions, hidden photons) ALPs Dark Energy (i.e. Chameleons) Low energy scale dictates experimental approach Axions WISP searches are complementary to WIMP searches [email protected] The University of Western Australia 5 The Axion – Origins in Particle Physics CP violating term in QCD Lagrangian implies neutron electric dipole moment: But measurements place constraint: Why is the neutron electric dipole moment (and thus θ) so small? This is the Strong CP Problem. -
Rare Event Physics WG1
Rare event physics WG1 Our ambitious mission : ● Show the state of the art of the physics of rare events ● Cover for both experimental and theoretical aspects ● Provide hints for the exploration of next generation experiments (link with WG5) ● Provide a guideline for experimental and technological efforts, like constraints for low cosmo- and radio-purity techniques(WG2), for detection methods (WG3) and analysis tools (WG4) ● Being inclusive to any other scientific field that would profit of deep underground sites Christine Marquet, CENBG Mariangela Settimo, Subatech May 31, 2021 - visioconference Luca Scotto Lavina, LPNHE Two major axes 1. Dark Matter WG1 We will keep a particular eye on direct search of dark matter : ● Scoping the whole zoology of models (WIMP, WISP, axions, …), nucleo- or lepto-philic ● Exploring a wide (and experimentally accessible) range of masses/energies ( >GeV, sub-GeV, down to μeV) ● Looking for any trace of daily and seasonal modulation ● Using a plethora of targets and combinations of energy losses ● Complementarity with colliders (new particles) and indirect evidences (annihilation) Christine Marquet, CENBG Mariangela Settimo, Subatech May 31, 2021 - visioconference Luca Scotto Lavina, LPNHE Two major axes 2. Neutrinoless double beta decay WG1 We will keep an eye on the search for the intimate nature of neutrinos : ● Nature of neutrino (Majorana/Dirac) ● Fixing the neutrino mass scale and possible mass scenarii ● Proof of a lepton number violation ● Neutrino hierarchy ● Impact on baryon asymmetry of the Universe -
2013 January
Online Newsletter January 2013 Issue no 24 Branch committee REMS At Home - An Environmental Miscellany Dr Mark Telling CPhys MInstP, Chair On 10 January 71 members and guests were educated and entertained E-mail [email protected] by 5 invited speakers. The meeting was organised and orchestrated by Bob Boutland CPhys MInstP George Freeman, who unfortunately could not attend during Treasurer recuperation following an operation. Mike Quinton, (pictured below) Education representative introduced the speakers. and online newsletter editor E-mail [email protected] David Parkes CPhys MInstP Berkshire Centre representative E-mail [email protected] Stephen Elsmere Berkshire Centre representative E-mail [email protected] Leonard Lewell CPhys MInstP, London Centre Representative E-mail [email protected] Prof. R Mackintosh CPhys FInstP Milton Keynes Centre representative E-mail [email protected] Dr Diane Crann MInstP Hertfordshire Centre representative E-mail [email protected] J A Belling MInstP REMS visit secretary E-mail [email protected] The Barometer and its early use in forecasting on land and on sea” Marta Caballero E-mail [email protected] Anita McConnell Provided a very detailed story from the early days. It Student Representative was Torricelli and Viviani who showed in 1643-4 that there is such a thing as a vacuum noting that the height of the column mercury varied James Kneller daily with changes in the weather, but also with temperature. Pascal E-mail [email protected] Student Representative noted that a barometer recorded a lower pressure when taken up a mountain, the Puy de Dôme. -
Peter Kalmus, Rubab Khan, Luca Matone, Szabolcs Márka
Search Method for Gravitational Wave Transients Associated with the SGR 1806-20 Giant Flare We describe a method for searching for transient gravitational waves associated with the SGR 1806-20 T Peter Kalmus, Rubab Khan, Luca Matone, Szabolcs Márka C giant flare of 27 December 2004 using data collected by the LIGO 4 km detector located at Hanford, WA. A We create an excess power time series from a time-frequency tiling by projecting elements in the R T frequency band of interest onto the time axis. This time series is calibrated with injections of known Columbia University Experimental Gravity Group S strength. An upper limit estimate can then be obtained by selecting the loudest event in the on-source B A region. Validations for the search and estimated sensitivity, obtained by performing the search on realistic simulated LIGO data, are presented. 7. Estimated Sensitivity From Simulated Data 5. The Search Algorithm Simulated Noise 1. An Extraordinary Event To create simulated noise, a segment of LIGO noise is taken as a model. The individual On 27 December 2004, SGR 1806-20, a 'Soft Gamma Repeater' located 6-15 kpc Creation of Tiling and Band Plot data samples are randomly shuffled. The amplitude spectral density of the result is then away [1, 2], emitted the brightest transient ever observed [1, 6, 8, 11, 15]. Data Conditioning Conditioned data is transformed into a spectrogram, which is a linear time- matched to the LIGO noise bin by bin in frequency space, and the resulting series is frequency tiling. We take the complex magnitude of the resulting matrix. -
The International Axion Observatory IAXO
Letter of Intent to the CERN SPSC The International Axion Observatory IAXO IAXO Collaboration August 7, 2013 CERN-SPSC-2013-022 / SPSC-I-242 08/08/2013 Version: 1.0 IAXO The International Axion Observatory Letter of Intent Date: August 7, 2013 Page 3 of 80 Letter of Intent to the CERN SPSC The International Axion Observatory IAXO E. Armengaud1, F. T. Avignone2, M. Betz3, P. Brax4, P. Brun1, G. Cantatore5, J. M. Carmona6, G. P. Carosi7, F. Caspers3, S. Caspi8, S. A. Cetin9, D. Chelouche10, F. E. Christensen11, A. Dael1, T. Dafni6, M. Davenport3, A.V. Derbin12, K. Desch13, A. Diago6, B. Dobrich¨ 14, I. Dratchnev12, A. Dudarev3, C. Eleftheriadis15, G. Fanourakis16, E. Ferrer-Ribas1, J. Galan´ 1, J. A. Garc´ıa6, J. G. Garza6, T. Geralis16, B. Gimeno17, I. Giomataris1, S. Gninenko18, H. Gomez´ 6, D. Gonzalez-D´ ´ıaz6, E. Guendelman19, C. J. Hailey20, T. Hiramatsu21, D. H. H. Hoffmann22, D. Horns23, F. J. Iguaz6, I. G. Irastorza6;∗, J. Isern24, K. Imai25, A. C. Jakobsen11, J. Jaeckel26, K. Jakovciˇ c´27, J. Kaminski13, M. Kawasaki28, M. Karuza29, M. Krcmarˇ 27, K. Kousouris3, C. Krieger13, B. Lakic´27, O. Limousin1, A. Lindner14, A. Liolios15, G. Luzon´ 6, S. Matsuki30, V. N. Muratova12, C. Nones1, I. Ortega6, T. Papaevangelou1, M. J. Pivovaroff7, G. Raffelt31, J. Redondo31, A. Ringwald14, S. Russenschuck3, J. Ruz7, K. Saikawa32, I. Savvidis15, T. Sekiguchi28, Y. K. Semertzidis33, I. Shilon3, P. Sikivie34, H. Silva3, H. ten Kate3, A. Tomas6, S. Troitsky18, T. Vafeiadis3, K. van Bibber35, P. Vedrine1, J. A. Villar6, J. K. Vogel7, L. Walckiers3, A. -
WISP Dark Matter Theory
WISP Dark Matter Theory. Andreas Ringwald (DESY) Latest Results in Dark Matter Searches Stockholm, Sweden 12-14 May 2014 Introduction > Plenty of dark matter (DM) candi- dates spanning huge parameter range in masses and couplings > Two classes stand out because of their convincing physics case and the variety of experimental and observational probes: § Weakly Interacting Massive Particles (WIMPs), such as neutralinos § Very Weakly Interacting Slim (=ultra- light) Particles (WISPs), such as axions, axion-like particles and hidden photons [Kim,Carosi `10] Andreas Ringwald | WISP Dark Matter Theory, Latest Results in Dark Matter Searches, Stockholm, 12-14 May 2014 | Page 2 Theoretically favored WISP candidates > Pseudo Nambu-Goldstone bosons: § “Axion-Like Particles” (ALPs) arising from breaking of global U(1) symmetries at high energy scale f a ; angular part of complex SM singlet Higgs-like field • Low energy effective field theory has shift symmetry a ( x ) a ( x ) + const . , forbidding 2 2 explicit mass terms, m a a ( x ) , in the Lagrangian ! • Effective couplings to/ SM particles suppressed by powers of high energy scale f a , e.g. coupling to photons, ↵ a C F F˜µ⌫ aγ µ⌫ L ⊃−8⇡ fa • Examples: • Axion from breaking of global chiral symmetry; axion field acts as dynamical theta parameter, [Peccei,Quinn 77; Weinberg 78; Wilczek 78] spontaneously relaxing to zero, (thus CP conserved in strong interactions) • mass due to chiral symmetry breaking, • Majoron from breaking of global lepton number symmetry [Chikashige et al. 78] • high scale -
The Many Faces of the Inflaton Field
The many faces of the inflaton field Tommi Tenkanen in collaboration with T. Alanne, F. Sannino, K. Tuominen, and V. Vaskonen Queen Mary University of London Talk based on arXiv: 1606.06063, 1607.01379, 1611.04932 University of Helsinki 8/3/2017 E-mail: [email protected] Tommi Tenkanen The many faces of the inflaton field 8/3/2017 1 / 30 Open problems in cosmology Tommi Tenkanen The many faces of the inflaton field 8/3/2017 2 / 30 Evidence for Dark Matter Great deal of evidence for the existence of dark matter: rotational velocity curves of galaxies, Bullet Cluster1, acoustic peaks in the Cosmic Microwave Background (CMB) radiation spectrum... Still the nature of dark matter is unknown 1 Image: Chandra X-ray Observatory Tommi Tenkanen The many faces of the inflaton field 8/3/2017 3 / 30 What is Dark Matter? What is the correct explanation for the invisible matter content observed in the universe? Does the dark matter particle exist? Or are there many dark matter particles? Are they WIMP’s, FIMP’s, SIMP’s, GIMP’s, PIDM’s, WISP’s, ALP’s, Wimpzillas, or sterile neutrinos? Or should gravity be modified? How can we tell which model is the correct one (if any)? Tommi Tenkanen The many faces of the inflaton field 8/3/2017 4 / 30 Search for Dark Matter Many on-going experiments exist2 Yet no conclusive detection. 2 Original image: Max-Planck-Institut Für Kernphysik Tommi Tenkanen The many faces of the inflaton field 8/3/2017 5 / 30 Matter–antimatter asymmetry Why is there more matter than antimatter? How and at what point in the history of the universe was this asymmetry generated? Electroweak baryogenesis remains as a viable candidate for explaining the origin of this asymmetry. -
Wisp Unification Theory Particles of Nothingness
WISP UNIFICATION THEORY PARTICLES OF NOTHINGNESS KEVIN HARKESS Wisp Unification Theory Particles of Nothingness Kevin Harkess BSc (Hons) HR Harkess Research 95 Sibelius Close Basingstoke Hampshire RG22 4HX England. First published in 2003 by Harkess Research 95 Sibelius Close, Basingstoke, Hampshire, RG22 4HX. Reprinted 2011 (with revisions). Copyright © Kevin Harkess 2002 Kevin Harkess has asserted his right under the Copyright, Design and Patents Act 1988 to be identified as author of this work. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, (other than short extracts for the purpose of review) or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording or otherwise, without the prior written permission of the publisher and copyright holder. The material contained in this CD-ROM eBook is set out in good faith for the development of new scientific theories and no liability can be accepted for the loss or expense incurred as a result of relying in particular circumstances on statements made in it. A catalogue record for this book is available from the British Library. ISBN 0-9543694-0-8 (eBook CD-ROM) ISBN 0-9543694-1-6 (paperback) Design and origination by Kevin Harkess Illustrations by Kim Albinson and Kevin Harkess Front cover illustration by Paul Privitera Printed in Great Britain by Harkess Research Dedication To Dawn, Michael and Bethany CONTENTS Introduction . .xiii 1 Matter, Space and Time . .1 1.1 Basic understanding . .1 1.1.1 – Matter . .1 1.1.2 – Space . .1 1.1.3 – Time . .1 1.1.4 – Perception of reality . -
Symposium Celebrating CERN's Discoveries and Looking Into the Future
CERN–EP–2003–073 CERN–TH–2003–281 December 1st, 2003 Proceedings Symposium celebrating the Anniversary of CERN’s Discoveries and a Look into the Future 111999777333::: NNNeeeuuutttrrraaalll CCCuuurrrrrreeennntttsss 111999888333::: WWW±±± &&& ZZZ000 BBBooosssooonnnsss Tuesday 16 September 2003 CERN, Geneva, Switzerland Editors: Roger Cashmore, Luciano Maiani & Jean-Pierre Revol Table of contents Table of contents 2 Programme of the Symposium 4 Foreword (L. Maiani) 7 Acknowledgements 8 Selected Photographs of the Event 9 Contributions: Welcome (L. Maiani) 13 The Making of the Standard Model (S. Weinberg) 16 CERN’s Contribution to Accelerators and Beams (G. Brianti) 30 The Discovery of Neutral Currents (D. Haidt) 44 The Discovery of the W & Z, a personal recollection (P. Darriulat) 57 W & Z Physics at LEP (P. Zerwas) 70 Physics at the LHC (J. Ellis) 85 Challenges of the LHC: – the accelerator challenge (L. Evans) 96 – the detector challenge (J. Engelen) 103 – the computing challenge (P. Messina) 110 Particle Detectors and Society (G. Charpak) 126 The future for CERN (L. Maiani) 136 – 2 – Table of contents (cont.) Panel discussion on the Future of Particle Physics (chaired by Carlo Rubbia) 145 Participants: Robert Aymar, Georges Charpak, Pierre Darriulat, Luciano Maiani, Simon van der Meer, Lev Okun, Donald Perkins, Carlo Rubbia, Martinus Veltman, and Steven Weinberg. Statements from the floor by: Fabiola Gianotti, Ignatios Antoniadis, S. Glashow, H. Schopper, C. Llewellyn Smith, V. Telegdi, G. Bellettini, and V. Soergel. Additional contributions: Comment on the occasion (S. L. Glashow) 174 Comment on Perturbative QCD in early CERN experiments (D. H. Perkins) 175 Personal remarks on the discovery of Neutral Currents (A. -
Newsletter, November 2017
ISSN 1756-168X (Print) ISSN 2516-3353 (Online) Newsletter No. 35 November 2017 Published by the History of Physics Group of the Institute of Physics (UK & Ireland) ISSN 1756-168X IOP History of Physics Newsletter November 2017 Contents Editorial 2 Meeting Reports Chairman’s Report 3 Rutherford’s chemists - abstracts 5 ‘60 Years on from ZETA’ by Chris Warrick 10 Letters to the editor 13 Obituary John W Warren by Stuart Leadstone 15 Features Anti-matter or anti-substance? by John W Warren 16 A Laboratory in the Clouds - Horace-Bénédict de Saussure by Peter Tyson 18 On Prof. W.H.Bragg’s December 1914 Letter to the Vice- Chancellor of the University of Leeds by Chris Hammond 34 Book Reviews Crystal Clear - Autobiographies of Sir Lawrence and Lady Bragg by Peter Ford 54 Forthcoming Meetings 69 Committee and contacts 70 61 2 Editorial A big ‘Thank you’! Around 45 people attended the Bristol meeting on the History of Particle Colliders, in April. It was a joint meeting between the History of Physics Group, the High Energy Physics Group, and the Particle Accelerators and Beams Group. With a joint membership of around 2000, that works out at well under 3% - and that was a good turnout. The Rutherford’s Chemists meeting held in Glasgow attracted probably a similar percentage - not very high you might think. But time and travel costs to attend come at a premium so any means by which the content of our meetings may be promulgated - reports in our newsletter and in those of the other groups - is a very worthwhile task.