Greg Landsberg | |
---|---|
Education | SUNY Stony Brook (PhD 1994) |
Scientific career | |
Fields | Particle physics |
Institutions | DØ experiment (Fermilab) Brown University CMS (CERN) |
Academic advisors | Paul Grannis |
Greg Landsberg is an American particle physicist. He is the Thomas J. Watson Sr. Professor of Physics at Brown University.
Landsberg obtained his doctor of philosophy from SUNY Stony Brook in 1994, supervized by Paul Grannis. He worked at the DØ experiment at Fermilab during and after his PhD. He entered Brown University's faculty in 1998. [1]
In 2001 Landsberg became a Alfred P. Sloan Fellow. [2] In the same year, he wrote with Savas Dimopoulos about the generation of minuscule blackholes in the Large Hadron Collider (LHC). [3] [4] [5] Landsberg was also the Deputy Physics Coordinator of DØ, before he led the Brown team to join the CMS Experiment at CERN in 2004. [1]
In 2009 he was elected a Fellow of the American Physical Society, see list and announcement by his department. [6]
In 2010, Landsberg proposed a theory in which the universe's dimensions grow as it expands. [7] He also participated in the search of the Higgs Boson. [8] From 2012 to 2013, he was the Physics Coordinator at the CMS Experiment. [1] He became the Thomas J. Watson Sr. Professor of Physics at Brown University in 2014. [9] [10]
The Large Hadron Collider (LHC) is the world's largest and highest-energy particle collider. It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and hundreds of universities and laboratories across more than 100 countries. It lies in a tunnel 27 kilometres (17 mi) in circumference and as deep as 175 metres (574 ft) beneath the France–Switzerland border near Geneva.
In particle physics, a tetraquark is an exotic meson composed of four valence quarks. A tetraquark state has long been suspected to be allowed by quantum chromodynamics, the modern theory of strong interactions. A tetraquark state is an example of an exotic hadron which lies outside the conventional quark model classification. A number of different types of tetraquark have been observed.
Micro black holes, also called mini black holes or quantum mechanical black holes, are hypothetical tiny black holes, for which quantum mechanical effects play an important role. The concept that black holes may exist that are smaller than stellar mass was introduced in 1971 by Stephen Hawking.
The LHCb experiment is a particle physics detector experiment collecting data at the Large Hadron Collider at CERN. LHCb is a specialized b-physics experiment, designed primarily to measure the parameters of CP violation in the interactions of b-hadrons. Such studies can help to explain the matter-antimatter asymmetry of the Universe. The detector is also able to perform measurements of production cross sections, exotic hadron spectroscopy, charm physics and electroweak physics in the forward region. The LHCb collaborators, who built, operate and analyse data from the experiment, are composed of approximately 1650 people from 98 scientific institutes, representing 22 countries. Vincenzo Vagnoni succeeded on July 1, 2023 as spokesperson for the collaboration from Chris Parkes. The experiment is located at point 8 on the LHC tunnel close to Ferney-Voltaire, France just over the border from Geneva. The (small) MoEDAL experiment shares the same cavern.
Savas Dimopoulos is a particle physicist at Stanford University. He worked at CERN from 1994 to 1997. Dimopoulos is well known for his work on constructing theories beyond the Standard Model.
In particle physics and string theory (M-theory), the ADD model, also known as the model with large extra dimensions (LED), is a model framework that attempts to solve the hierarchy problem. The model tries to explain this problem by postulating that our universe, with its four dimensions, exists on a membrane in a higher dimensional space. It is then suggested that the other forces of nature operate within this membrane and its four dimensions, while the hypothetical gravity-bearing particle, the graviton, can propagate across the extra dimensions. This would explain why gravity is very weak compared to the other fundamental forces. The size of the dimensions in ADD is around the order of the TeV scale, which results in it being experimentally probeable by current colliders, unlike many exotic extra dimensional hypotheses that have the relevant size around the Planck scale.
The safety of high energy particle collisions was a topic of widespread discussion and topical interest during the time when the Relativistic Heavy Ion Collider (RHIC) and later the Large Hadron Collider (LHC)—currently the world's largest and most powerful particle accelerator—were being constructed and commissioned. Concerns arose that such high energy experiments—designed to produce novel particles and forms of matter—had the potential to create harmful states of matter or even doomsday scenarios. Claims escalated as commissioning of the LHC drew closer, around 2008–2010. The claimed dangers included the production of stable micro black holes and the creation of hypothetical particles called strangelets, and these questions were explored in the media, on the Internet and at times through the courts.
Guido Tonelli is an Italian particle physicist who was involved with the discovery of the Higgs boson at the Large Hadron Collider. He is a professor of General Physics at the University of Pisa (Italy) and a CERN visiting scientist.
Sir Tejinder Singh Virdee,, is a Kenyan-born British experimental particle physicist and Professor of Physics at Imperial College London. He is best known for originating the concept of the Compact Muon Solenoid (CMS) with a few other colleagues and has been referred to as one of the 'founding fathers' of the project. CMS is a world-wide collaboration which started in 1991 and now has over 3500 participants from 50 countries.
Philip Michael Tuts is an American high-energy experimental particle physicist, and Professor and Chair of the Columbia University Physics Department. Tuts is a Fellow of the American Physical Society. He holds a seat on the executive committees of the United States LHC Users' Association and the American Physics Society Forum on Physics and Society, and is Divisional Councilor of the Division of Particles and Fields of APS. Tuts earned his Bachelor's in Physics from MIT in 1974, and his MA and PhD from the State University of New York at Stony Brook in 1976 and 1979, respectively. He joined the physics department at Columbia University in the City of New York in 1983 and was appointed Chair in 2014. Tuts is currently a member of the ATLAS experiment team at CERN and formerly served as US ATLAS Operations Program Manager.
Daniela Bortoletto is an Italian-British high energy physicist, head of Particle Physics at the University of Oxford and Nicholas Kurti Senior Research Fellow in Physics at Brasenose College, University of Oxford. She works in silicon detector development and was a co-discoverer of both the Higgs boson and the top quark.
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Paraskevas Andreas Sphicas is a particle physicist who focuses on studies of High energy collisions in the Large Hadron Collider through which he explores supersymmetry and the mechanism of spontaneous symmetry breaking. He is a senior scientist at CERN and professor of physics at the National and Kapodistrian University of Athens. He was elected a Fellow of the Royal Society (FRS) in 2019.
Felicitas Pauss is an Austrian physicist. She was elected Professor for Experimental Particle physics at ETH Zurich, Switzerland, in 1993. Her research activities concentrated on two main research fields: particle physics at the high-energy frontier and astroparticle physics, addressing fundamental open questions about the structure of the Universe and the underlying mechanisms that govern its evolution.
Tulika Bose is a professor of physics at the University of Wisconsin-Madison, whose research focuses on developing triggers for experimental searches of new phenomena in high energy physics. Bose is a leader within the Compact Muon Solenoid (CMS) experiment, a CERN collaboration famous for its experimental observation of the Higgs boson in 2012.
Stephanie Zimmermann was a German physicist who worked on the ATLAS experiment at the Large Hadron Collider at CERN. As a researcher from the University of Freiburg, she was involved in the Muon Detector Control System activities, and she served as muon run-coordinator. She was elected and served as ATLAS Run-Coordinator in 2012–2014. She then became Project Leader of the New Small Wheel project (NSW), part of an extensive upgrade, the largest phase 1 upgrade project for the ATLAS detector.
Oliver Buchmueller is a scientist and professor of physics at the Faculty of Natural Science, Imperial College London. Buchmueller is presently serving as one of the lead scientists on the Compact Muon Solenoid experiment at CERN’s Large Hadron Collider, the principal investigator of the Atom Interferometer Observatory and Network and also one of the lead authors at Atomic Experiment for Dark Matter and Gravity Exploration in Space (AEDGE). Previously he has been associated with the ALEPH experiment at CERN’s LEP collider and the BaBar experiment at SLAC. Buchmueller was among the group of scientists responsible for the discovery of Higgs Boson particle at the LHC, CERN and later in the scientific exploration to find the traces of dark matter through the LHC.
Geoffrey Hall, is a British particle physicist, currently Professor of Physics at Imperial College London. He is best known for developing radiation and particle detectors and other electronic instruments for use in particle physics experiments, notably the CMS detector in CERN's Large Hadron Collider.
James Lewis Pinfold is a British-Canadian physicist, specializing in particle physics.
Florencia Canelli is since 2021 the appointed Swiss scientific delegate to the CERN council, the supreme decision-making authority of the CERN Organization. From 2021-2024, she was appointed chair of the IUPAP division of particles and field (C11). From 2021-2023, she was co-coordinator of the physics program of the CMS collaboration, a CERN experiment with over 3000 physicists. In 2010, Canelli was awarded the IUPAP Young scientist prize, an international prize awarded to one experimental and one theoretical physicist per year, for "her pioneering contribution to the identification and precision measurements of rare phenomenon through the use of advanced analysis techniques to separate very small signals from large background processes at the Tevatron collider." She has been an author on four multi-purpose collider experiments, namely the CMS experiment and ATLAS experiment at the CERN LHC, and the CDF experiment and D0 experiment at the Fermilab Tevatron. She is currently a full professor at the University of Zurich, Physics Institute, specializing in particle physics.