A muon is an elementary particle similar to the electron, with an electric charge of −1 e and spin-1/2, but with a much greater mass. It is classified as a lepton. As with other leptons, the muon is not thought to be composed of any simpler particles.
Particle physics or high-energy physics is the study of fundamental particles and forces that constitute matter and radiation. The field also studies combinations of elementary particles up to the scale of protons and neutrons, while the study of combination of protons and neutrons is called nuclear physics.
Brookhaven National Laboratory (BNL) is a United States Department of Energy national laboratory located in Upton, New York, a hamlet of the Town of Brookhaven. It was formally established in 1947 at the site of Camp Upton, a former U.S. Army base on Long Island. Located approximately 60 miles east of New York City, it is managed by Stony Brook University and Battelle Memorial Institute.
Fermi National Accelerator Laboratory (Fermilab), located in Batavia, Illinois, near Chicago, is a United States Department of Energy national laboratory specializing in high-energy particle physics.
The Relativistic Heavy Ion Collider is the first and one of only two operating heavy-ion colliders, and the only spin-polarized proton collider ever built. Located at Brookhaven National Laboratory (BNL) in Upton, New York, and used by an international team of researchers, it is the only operating particle collider in the US. By using RHIC to collide ions traveling at relativistic speeds, physicists study the primordial form of matter that existed in the universe shortly after the Big Bang. By colliding spin-polarized protons, the spin structure of the proton is explored.
Maurice Goldhaber was an American physicist, who in 1957 established that neutrinos have negative helicity.
In quantum electrodynamics, the anomalous magnetic moment of a particle is a contribution of effects of quantum mechanics, expressed by Feynman diagrams with loops, to the magnetic moment of that particle. The magnetic moment, also called magnetic dipole moment, is a measure of the strength of a magnetic source.
A g-factor is a dimensionless quantity that characterizes the magnetic moment and angular momentum of an atom, a particle or the nucleus. It is the ratio of the magnetic moment of a particle to that expected of a classical particle of the same charge and angular momentum. In nuclear physics, the nuclear magneton replaces the classically expected magnetic moment in the definition. The two definitions coincide for the proton.
George Randolph Kalbfleisch was an American particle physicist.
Quantum electrodynamics (QED), a relativistic quantum field theory of electrodynamics, is among the most stringently tested theories in physics. The most precise and specific tests of QED consist of measurements of the electromagnetic fine-structure constant, α, in various physical systems. Checking the consistency of such measurements tests the theory.
Francis James Macdonald Farley FRS was a British scientist. He was elected Fellow of the Royal Society on 16 March 1972 earning the designation FRS. He was also a Fellow of the Institute of Physics and an honorary fellow of Trinity College Dublin. He was educated at Clifton College and at Clare College, Cambridge. Farley obtained his PhD from Cambridge in 1950.
High-precision experiments could reveal small previously unseen differences between the behavior of matter and antimatter. This prospect is appealing to physicists because it may show that nature is not Lorentz symmetric.
Muon g − 2 is a particle physics experiment at Fermilab to measure the anomalous magnetic dipole moment of a muon to a precision of 0.14 ppm, which is a sensitive test of the Standard Model. It might also provide evidence of the existence of new particles.
Christine Angela Aidala is an American high-energy nuclear physicist, Alfred P. Sloan Research Fellow and Associate Professor of Physics at the University of Michigan. She studies nucleon structure and parton dynamics in quantum chromodynamics.
Kevin Insik Hahn is a South Korean physicist who is an expert in the fields of nuclear physics and nuclear astrophysics. Since December 2019, he has been the director of the Center for Exotic Nuclear Studies at the Institute for Basic Science (IBS) in South Korea. He also holds an endowed professorship in the Department of Science Education at Ewha Womans University, where he has worked since 1999. In his research, he has worked on accelerator-based as well as non-accelerator-based experiments. His current research activities involve a number of accelerators around the world, including the RI Beam Factory (RIBF) at RIKEN, Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, and the soon-to-open Rare isotope Accelerator complex for ON-line experiment (RAON). During his tenure at Ewha Womans University, he promoted STEM/STEAM education by serving for multiple years as the director of the Advanced STEAM Teacher Education Center. He also wrote several physics textbooks for high school students and undergraduate students.
Genda Gu is a condensed matter physicist at the Brookhaven National Laboratory. In his research, Gu specializes in the synthesis of large, high quality crystals for the production of superconductors. He works in the Brookhaven Laboratory's crystal growth lab, and as an adjunct professor at Stony Brook University. In 2012, Gu became a fellow of the American Physical Society.
Zoltan Fodor is a Hungarian-German theoretical particle physicist, best known for his works in lattice quantum chromodynamics.
William Joseph Marciano is an American theoretical physicist, specializing in elementary particle physics.
David William Hertzog is an American particle physicist, known for his research in precision muon physics.
Mary R. M. Bishai is an American physicist who is a Distinguished Scientist at Brookhaven National Laboratory. In 2023, she was elected spokesperson of Deep Underground Neutrino Experiment, and was made responsible for the 1,400 person collaboration. She was named a Fellow of the American Physical Society in 2015.
