January 1998 Communication, APS Centennial Are Sessler’S Top Priorities in 1998
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CERN Courier–Digital Edition
CERNMarch/April 2021 cerncourier.com COURIERReporting on international high-energy physics WELCOME CERN Courier – digital edition Welcome to the digital edition of the March/April 2021 issue of CERN Courier. Hadron colliders have contributed to a golden era of discovery in high-energy physics, hosting experiments that have enabled physicists to unearth the cornerstones of the Standard Model. This success story began 50 years ago with CERN’s Intersecting Storage Rings (featured on the cover of this issue) and culminated in the Large Hadron Collider (p38) – which has spawned thousands of papers in its first 10 years of operations alone (p47). It also bodes well for a potential future circular collider at CERN operating at a centre-of-mass energy of at least 100 TeV, a feasibility study for which is now in full swing. Even hadron colliders have their limits, however. To explore possible new physics at the highest energy scales, physicists are mounting a series of experiments to search for very weakly interacting “slim” particles that arise from extensions in the Standard Model (p25). Also celebrating a golden anniversary this year is the Institute for Nuclear Research in Moscow (p33), while, elsewhere in this issue: quantum sensors HADRON COLLIDERS target gravitational waves (p10); X-rays go behind the scenes of supernova 50 years of discovery 1987A (p12); a high-performance computing collaboration forms to handle the big-physics data onslaught (p22); Steven Weinberg talks about his latest work (p51); and much more. To sign up to the new-issue alert, please visit: http://comms.iop.org/k/iop/cerncourier To subscribe to the magazine, please visit: https://cerncourier.com/p/about-cern-courier EDITOR: MATTHEW CHALMERS, CERN DIGITAL EDITION CREATED BY IOP PUBLISHING ATLAS spots rare Higgs decay Weinberg on effective field theory Hunting for WISPs CCMarApr21_Cover_v1.indd 1 12/02/2021 09:24 CERNCOURIER www. -
TAE 2018 Javier Redondo Universidad De Zaragoza Max Planck Institute Für Physik Overview
Axions TAE 2018 Javier Redondo Universidad de Zaragoza Max Planck Institute für Physik Overview - Strong CP problem - Axions - Axion Dark matter - Searching for axions in the sky in the lab Parity and Time reversal in particle physics (electroweak interactions) P-violation (Wu 56) T-violation (CPLEAR 90’s) R(K¯ 0 K0) R(K0 K¯ 0) ! − ! R(K¯ 0 K0)+R(K0 K¯ 0) 60% ! ! 40% ... but not in the strong interactions many theories based on SU(3)c (QCD) 1 ↵ = G Gµ⌫ + iq¯γµD q qmq¯ + s ✓G Gµ⌫ LQCD −4 µ⌫a a µ − 8⇡ µ⌫a a q X e P,T conserving P,T violating we tend to forget this ↵s µ⌫ ✓Gµ⌫aGa induces P and T (CP) violation ✓ 8⇡ / e ✓ ( ⇡, ⇡) infinitely versions of QCD... all are P,T violating 2 − Neutron EDM 15 Most important P, T violating observable dn ✓ (10− )e cm ⇠ ⇥ O ✓ (1) ⇠ O EDM violates P,T The theta angle of the strong interactions - The value of ✓ controls P,T violation in QCD ✓ ⇡ ⇡ − 0 n n n n¯ n¯ n¯ 10 Measured today ✓ < 10− | | (strong CP problem) Roberto Peccei and Helen Quinn 77 QCD vacuum energy minimised at theta = 0 - ... if ✓ ( t, x ) is dynamical field, relaxes to its minimum Energy generated by QCD! ✓ ⇡ ⇡ − 0 n n¯ 10 Measured today ✓ < 10− | | (strong CP problem) ain’t you forgetting something? P. Higgs and a new particle is born ... - if ✓ ( t, x ) is dynamical field Energy generated by QCD! ✓ ⇡ ⇡ − 0 Field Excitations around the vacuum are particles clears the strong CP problem it’s a higgslet! like my favorite soap S. -
Dark-Matter QCD-Axion Searches COLLOQUIUM
PAPER Dark-matter QCD-axion searches COLLOQUIUM Leslie J Rosenberg1 Department of Physics, University of Washington, Seattle, WA 98195 Edited by Neta A. Bahcall, Princeton University, Princeton, NJ, and approved October 30, 2014 (received for review July 26, 2013) In the late 20th century, cosmology became a precision science. Now, hadronic jets and the “running” of the strong coupling constant. at the beginning of the next century, the parameters describing how However, by the mid-1970s, it was realized that this theory our universe evolved from the Big Bang are generally known to predicts large violations of CP, the product of charge-reversal a few percent. One key parameter is the total mass density of the (C) and parity inversion (P), due to “instanton” (multiple de- universe. Normal matter constitutes only a small fraction of the total generate QCD vacuua) effects. It would be uncomfortable to mass density. Observations suggest this additional mass, the dark have QCD without instanton-mediated CP violation, as de- matter, is cold (that is, moving nonrelativistically in the early generate vacuua neatly explain hadron masses. One such CP- universe) and interacts feebly if at all with normal matter and violating effect is a permanent electric dipole moment for a spin- radiation. There’s no known such elementary particle, so the strong ning nondegenerate object bound by strong interactions (e.g., presumption is the dark matter consists of particle relics of a new the neutron). kind left over from the Big Bang. One of the most important ques- In a pleasing series of measurements, the neutron is constrained tions in science is the nature of this dark matter. -
CERN Celebrates Discoveries
INTERNATIONAL JOURNAL OF HIGH-ENERGY PHYSICS CERN COURIER VOLUME 43 NUMBER 10 DECEMBER 2003 CERN celebrates discoveries NEW PARTICLES NETWORKS SPAIN Protons make pentaquarks p5 Measuring the digital divide pl7 Particle physics thrives p30 16 KPH impact 113 KPH impact series VISyN High Voltage Power Supplies When the objective is to measure the almost immeasurable, the VISyN-Series is the detector power supply of choice. These multi-output, card based high voltage power supplies are stable, predictable, and versatile. VISyN is now manufactured by Universal High Voltage, a world leader in high voltage power supplies, whose products are in use in every national laboratory. For worldwide sales and service, contact the VISyN product group at Universal High Voltage. Universal High Voltage Your High Voltage Power Partner 57 Commerce Drive, Brookfield CT 06804 USA « (203) 740-8555 • Fax (203) 740-9555 www.universalhv.com Covering current developments in high- energy physics and related fields worldwide CERN Courier (ISSN 0304-288X) is distributed to member state governments, institutes and laboratories affiliated with CERN, and to their personnel. It is published monthly, except for January and August, in English and French editions. The views expressed are CERN not necessarily those of the CERN management. Editor Christine Sutton CERN, 1211 Geneva 23, Switzerland E-mail: [email protected] Fax:+41 (22) 782 1906 Web: cerncourier.com COURIER Advisory Board R Landua (Chairman), P Sphicas, K Potter, E Lillest0l, C Detraz, H Hoffmann, R Bailey -
April Meeting Goes Mile-High in 2004 Highlights New Techniques For
January 2004 Volume 13, No. 1 NEWS http://www.physics2005.org A Publication of The American Physical Society http://www.aps.org/apsnews April Meeting Goes Junior Members Respond to Mile-High in 2004 APS Ethics Survey By Ernie Tretkoff The “Mile High” city of Denver, International Affairs, Colorado, will host as many as History of Physics, and Few physicists received for- to include not just research mis- 1500 physicists at the 2004 APS Graduate Student Af- mal ethics training as part of their conduct such as data fabrication, April meeting, to be held May 1-4 fairs; and the Topical education, though many are con- falsification, and plagiarism, but 2004. Groups on Few-Body cerned about professional ethics, also issues such as authorship, Attendees will be drawn from a Systems, Precision a study by the APS Ethics Task proper credit of previous work, wide range of research areas. APS Measurement and Force has found. and data handling and reporting. units represented at the meeting Fundamental Con- Photo Credit: The Denver Metro Convention and Visitors Bureau The task force report was sub- “This was an interesting and include the Divisions of Astrophys- stants, Gravitation, Denver has the 10th largest downtown in America. mitted to and accepted by the sobering project,” said task force ics, Nuclear Physics, Particles and Plasma Astrophysics, APS Council at its meeting in chair Frances Houle of the IBM Fields, Plasma Physics, and Com- and Hadronic Physics. approximately 45 invited sessions. November. Almaden Research Center in San putational Physics; the Forums on The scientific program will fea- There will also be numerous con- The task force, which was con- Jose. -
A Time of Great Growth
Newsletter | Spring 2019 A Time of Great Growth Heartfelt greetings from the UC Riverside Department of Physics and Astronomy. This is our annual newsletter, sent out each Spring to stay connected with our former students, retired faculty, and friends in the wider community. The Department continues to grow, not merely in size but also in stature and reputation. For the 2018-2019 academic year, we were pleased to welcome two new faculty: Professors Thomas Kuhlman and Barry Barish. Professor Kuhlman was previously on the faculty at the University of Illinois at Urbana-Champaign. He joins our efforts in the emerging field of biophysics. His research lies in the quantitative imaging and theoretical modeling of biological systems. He works on genome dynamics, quantification of the activity of transposable elements in living cells, and applications to the engineering of genome editing. Professor Barry Barish, who joins us from Caltech, is the winner of the 2017 Nobel Prize in Physics. He brings great prestige to our Department. Along with Professor Richard Schrock of the Department of Chemistry, who also joined UCR in 2018, UCR now has two Nobel Prize winners on its faculty. Professor Barish is an expert on the detection and physics of gravitational waves. He has been one of the key figures in the conception, construction, and operation of the LIGO detector, where gravitational waves were first discovered in 2015, and which led to his Nobel Prize. He is a member of the National Academy of Sciences and the winner of many other prestigious awards. The discovery of gravitational waves is one of the most exciting developments in physics so far this century. -
NMD, National Security Issues Featured at 2001 April Meeting In
April 2001 NEWS Volume 10, No. 4 A Publication of The American Physical Society http://www.aps.org/apsnews NMD, National Security Issues Featured Phase I CPU Report to be at 2001 April Meeting in Washington Discussed at Attendees of the 2001 APS April include a talk on how the news me- Meeting, which returns to Wash- dia cover science by David April Meeting ington, DC, this year, should arrive Kestenbaum, a self-described “es- The first phase of a new Na- just in time to catch the last of the caped physicist who is hiding out tional Research Council report of cherry blossom season in between at National Public Radio,” and a lec- the Committee on the Physics of scheduled sessions and special ture on entangled photons for the Universe (CPU) will be the events. The conference will run quantum information by the Uni- topic of discussion during a spe- April 28 through May 1, and will versity of Illinois’ Paul Kwiat. Other cial Sunday evening session at the feature the latest results in nuclear scheduled topics include imaging APS April Meeting in Washing- physics, astrophysics, chemical the cosmic background wave back- ton, DC. The session is intended physics, particles and fields, com- ground, searching for extra to begin the process of collect- putational physics, plasma physics, dimensions, CP violation in B me- ing input from the scientific the physics of beams, and physics sons, neutrino oscillations, and the community on some of the is- history, among other subdisci- amplification of atoms and light in The White House and (inset) some of its famous fictional sues outlined in the draft report, plines. -
Professor Helen Quinn
Professor Helen Quinn Helen Quinn was born in Australia and grew up in the Melbourne suburbs of Blackburn and Mitcham. She attended Tintern Girls Grammar School in Ringwood East. She matriculated successfully and obtained a cadetship from the Australian Department of Meteorology to fund her studies at the University of Melbourne. After beginning her undergraduate studies at the University, her family migrated to San Francisco in the early 1960s. Professor Quinn finished her undergraduate, and eventually graduate education at Stanford University. After receiving her doctorate from Stanford in 1967, she held a postdoctoral position at Deutsches Elektronen Synchrotron in Hamburg, Germany, then served as a research fellow at Harvard in 1971, joining the faculty there in 1972. She returned to Stanford in 1976 as a visitor on a Sloan Fellowship and joined the staff at the Stanford Linear Accelerator Centre (SLAC) in 1977. In her current position as a theoretical physicist at the Stanford Linear Accelerator Center (SLAC), Professor Quinn has made important contributions towards unifying the strong, weak and electromagnetic interactions into a single coherent model of particle physics. In 2000 she was awarded the Dirac Medal and Prize for pioneering contributions to the quest for a unified theory of quarks and leptons and of the strong, weak, and electromagnetic interactions. The award, shared with Professors Howard Georgi of Harvard and Jogesh Pati of the University of Maryland, recognized Professor Quinn for her work on the unification of the three interactions, and for fundamental insights about charge-parity conservation. She has also recently developed basic analysis methods used to search for the origin of particle-antiparticle asymmetry in nature. -
6 8 Myriam Sarachik Elected APS Vice President
November 2000 NEWS Volume 9, No. 10 A Publication of The American Physical Society http://www.aps.org/apsnews Myriam Sarachik Elected APS Vice President Members of the APS have chosen Sciences Research at Lucent. Only and government labs, and to pro- Myriam Sarachik, a distinguished two new general councillors were vide the next generation of professor of physics at City College elected, compared to the four educators at our universities,” she of New York’s City University of New elected in previous years, to reflect says. One of her goals as President York, to be the Society’s next vice recent changes in the APS Consti- will be to strengthen the society’s president. Sarachik is the third tution, designed to reduce the size efforts to make a career in physics woman to be elected to the presi- of the APS Council. These changes attractive. “We need to be more ef- dential line in the Society’s 101-year were published in the March 2000 fective in explaining the pleasures history, following C.S. Wu of Colum- issue of APS News. that a career in physics can bring, bia in 1975, and Mildred the satisfaction garnered from VICE PRESIDENT CHAIR-ELECT OF THE Dresselhaus of MIT (who became VICE PRESIDENT teaching, and the excitement of re- Myriam Sarachik NOMINATING COMMITTEE Director of the Department of MYRIAM SARACHIK search and discovery; we must also Susan Coppersmith Energy’s Office of Science in August) City College of New York/CUNY have salaries competitive with other in 1984. Sarachik’s term begins Born in Antwerp, Belgium, professional options,” she says. -
A Selected Bibliography of Publications By, and About, J
A Selected Bibliography of Publications by, and about, J. Robert Oppenheimer Nelson H. F. Beebe University of Utah Department of Mathematics, 110 LCB 155 S 1400 E RM 233 Salt Lake City, UT 84112-0090 USA Tel: +1 801 581 5254 FAX: +1 801 581 4148 E-mail: [email protected], [email protected], [email protected] (Internet) WWW URL: http://www.math.utah.edu/~beebe/ 17 March 2021 Version 1.47 Title word cross-reference $1 [Duf46]. $12.95 [Edg91]. $13.50 [Tho03]. $14.00 [Hug07]. $15.95 [Hen81]. $16.00 [RS06]. $16.95 [RS06]. $17.50 [Hen81]. $2.50 [Opp28g]. $20.00 [Hen81, Jor80]. $24.95 [Fra01]. $25.00 [Ger06]. $26.95 [Wol05]. $27.95 [Ger06]. $29.95 [Goo09]. $30.00 [Kev03, Kle07]. $32.50 [Edg91]. $35 [Wol05]. $35.00 [Bed06]. $37.50 [Hug09, Pol07, Dys13]. $39.50 [Edg91]. $39.95 [Bad95]. $8.95 [Edg91]. α [Opp27a, Rut27]. γ [LO34]. -particles [Opp27a]. -rays [Rut27]. -Teilchen [Opp27a]. 0-226-79845-3 [Guy07, Hug09]. 0-8014-8661-0 [Tho03]. 0-8047-1713-3 [Edg91]. 0-8047-1714-1 [Edg91]. 0-8047-1721-4 [Edg91]. 0-8047-1722-2 [Edg91]. 0-9672617-3-2 [Bro06, Hug07]. 1 [Opp57f]. 109 [Con05, Mur05, Nas07, Sap05a, Wol05, Kru07]. 112 [FW07]. 1 2 14.99/$25.00 [Ber04a]. 16 [GHK+96]. 1890-1960 [McG02]. 1911 [Meh75]. 1945 [GHK+96, Gow81, Haw61, Bad95, Gol95a, Hew66, She82, HBP94]. 1945-47 [Hew66]. 1950 [Ano50]. 1954 [Ano01b, GM54, SZC54]. 1960s [Sch08a]. 1963 [Kuh63]. 1967 [Bet67a, Bet97, Pun67, RB67]. 1976 [Sag79a, Sag79b]. 1981 [Ano81]. 20 [Goe88]. 2005 [Dre07]. 20th [Opp65a, Anoxx, Kai02]. -
2005 Annual Report American Physical Society
1 2005 Annual Report American Physical Society APS 20052 APS OFFICERS 2006 APS OFFICERS PRESIDENT: PRESIDENT: Marvin L. Cohen John J. Hopfield University of California, Berkeley Princeton University PRESIDENT ELECT: PRESIDENT ELECT: John N. Bahcall Leo P. Kadanoff Institue for Advanced Study, Princeton University of Chicago VICE PRESIDENT: VICE PRESIDENT: John J. Hopfield Arthur Bienenstock Princeton University Stanford University PAST PRESIDENT: PAST PRESIDENT: Helen R. Quinn Marvin L. Cohen Stanford University, (SLAC) University of California, Berkeley EXECUTIVE OFFICER: EXECUTIVE OFFICER: Judy R. Franz Judy R. Franz University of Alabama, Huntsville University of Alabama, Huntsville TREASURER: TREASURER: Thomas McIlrath Thomas McIlrath University of Maryland (Emeritus) University of Maryland (Emeritus) EDITOR-IN-CHIEF: EDITOR-IN-CHIEF: Martin Blume Martin Blume Brookhaven National Laboratory (Emeritus) Brookhaven National Laboratory (Emeritus) PHOTO CREDITS: Cover (l-r): 1Diffraction patterns of a GaN quantum dot particle—UCLA; Spring-8/Riken, Japan; Stanford Synchrotron Radiation Lab, SLAC & UC Davis, Phys. Rev. Lett. 95 085503 (2005) 2TESLA 9-cell 1.3 GHz SRF cavities from ACCEL Corp. in Germany for ILC. (Courtesy Fermilab Visual Media Service 3G0 detector studying strange quarks in the proton—Jefferson Lab 4Sections of a resistive magnet (Florida-Bitter magnet) from NHMFL at Talahassee LETTER FROM THE PRESIDENT APS IN 2005 3 2005 was a very special year for the physics community and the American Physical Society. Declared the World Year of Physics by the United Nations, the year provided a unique opportunity for the international physics community to reach out to the general public while celebrating the centennial of Einstein’s “miraculous year.” The year started with an international Launching Conference in Paris, France that brought together more than 500 students from around the world to interact with leading physicists. -
DPF NEWSLETTER - April 15, 1996
DPF NEWSLETTER - April 15, 1996 To: Members of the Division of Particles and Fields From: Jonathan Bagger, Secretary-Treasurer, [email protected] 1995 DPF Elections Howard Georgi was elected Vice-Chair of the DPF. Tom Devlin and Heidi Schellman were elected to the Executive Committee. George Trilling was elected as a Division Councillor. The current members of the DPF Executive Committee and the final years of their terms are Chair: Frank Sciulli (1996) Chair-Elect: Paul Grannis (1996) Vice-Chair: Howard Georgi (1996) Past Chair: David Cassel (1996) Secretary-Treasurer: Jonathan Bagger (1997) Division Councillor: Henry Frisch (1997), George Trilling (1998) Executive Board: Sally Dawson (1996), Tom Devlin (1998), Martin Einhorn (1997), John Rutherfoord (1997), Heidi Schellman (1998), Michael Shaevitz (1996) Call for Nominations: 1996 DPF Elections The 1996 Nominating Committee is hard at work. Please send suggestions for candidates to the Chair, Abe Seiden of Santa Cruz ([email protected]). The other members of the Nominating Committee are Melissa Franklin, Robert Jaffe, Michael Murtagh, Helen Quinn, and Bill Reay. DPF Members are also entitled to nominate candidates by petition. Twenty signatures from DPF members are required. Nominations will be accepted by Jonathan Bagger until May 15, 1996. Snowmass 1996: New Directions for High Energy Physics The 1996 Snowmass Workshop on New Directions in High Energy Physics will be held in Snowmass, Colorado, from June 24 to July 12, 1996. Arrival, registration, and a reception will be on June 24. Full-day plenary sessions will be held on June 25-26 and July 11-12. This workshop will provide an opportunity to begin to develop a coherent plan for the longer term future for U.S.