A gluon is a type of massless elementary particle that mediates the strong interaction between quarks, acting as the exchange particle for the interaction. Gluons are massless vector bosons, thereby having a spin of 1. Through the strong interaction, gluons bind quarks into groups according to quantum chromodynamics (QCD), forming hadrons such as protons and neutrons.
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, Long Island 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. Located approximately 60 miles east of New York City, it is managed by Stony Brook University and Battelle Memorial Institute.
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.
High-energy nuclear physics studies the behavior of nuclear matter in energy regimes typical of high-energy physics. The primary focus of this field is the study of heavy-ion collisions, as compared to lighter atoms in other particle accelerators. At sufficient collision energies, these types of collisions are theorized to produce the quark–gluon plasma. In peripheral nuclear collisions at high energies one expects to obtain information on the electromagnetic production of leptons and mesons that are not accessible in electron–positron colliders due to their much smaller luminosities.
Quark–gluon plasma is an interacting localized assembly of quarks and gluons at thermal and chemical (abundance) equilibrium. The word plasma signals that free color charges are allowed. In a 1987 summary, Léon van Hove pointed out the equivalence of the three terms: quark gluon plasma, quark matter and a new state of matter. Since the temperature is above the Hagedorn temperature—and thus above the scale of light u,d-quark mass—the pressure exhibits the relativistic Stefan-Boltzmann format governed by temperature to the fourth power and many practically massless quark and gluon constituents. It can be said that QGP emerges to be the new phase of strongly interacting matter which manifests its physical properties in terms of nearly free dynamics of practically massless gluons and quarks. Both quarks and gluons must be present in conditions near chemical (yield) equilibrium with their colour charge open for a new state of matter to be referred to as QGP.
Arie Bodek is an American experimental particle physicist and the George E. Pake Professor of Physics at the University of Rochester.
The idea that matter consists of smaller particles and that there exists a limited number of sorts of primary, smallest particles in nature has existed in natural philosophy at least since the 6th century BC. Such ideas gained physical credibility beginning in the 19th century, but the concept of "elementary particle" underwent some changes in its meaning: notably, modern physics no longer deems elementary particles indestructible. Even elementary particles can decay or collide destructively; they can cease to exist and create (other) particles in result.
Homer Alfred Neal was an American particle physicist and a distinguished professor at the University of Michigan. Neal was president of the American Physical Society in 2016. He was also a board member of Ford Motor Company, a council member of the National Museum of African American History and Culture, and a director of the Richard Lounsbery Foundation. Neal was the interim President of the University of Michigan in 1996. Neal's research group works as part of the ATLAS experiment hosted at CERN in Geneva.
An electron–ion collider (EIC) is a type of particle accelerator collider designed to collide spin-polarized beams of electrons and ions, in order to study the properties of nuclear matter in detail via deep inelastic scattering. In 2012, a whitepaper was published, proposing the developing and building of an EIC accelerator, and in 2015, the Department of Energy Nuclear Science Advisory Committee (NSAC) named the construction of an electron–ion collider one of the top priorities for the near future in nuclear physics in the United States.
Ágnes Mócsy is a Professor of Physics at the Pratt Institute who works on theoretical nuclear physics. She is also a filmmaker, science communicator and a Fellow of the American Physical Society.
Helen Louise Caines is a Professor of Physics at Yale University. She studies the quark–gluon plasma and is the co-spokesperson for the STAR experiment.
Henriette D. Elvang is a Theoretical Particle Physicist and Professor at the University of Michigan. She works on quantum field theory and scattering processes.
Sarah Louise Veatch is an American biophysicist, associate professor of biophysics at University of Michigan.
Xiangdong Ji is a Chinese theoretical nuclear and elementary particle physicist. He is a Distinguished University Professor at the University of Maryland, College Park.
Phiala Elisabeth Shanahan is an Australian theoretical physicist who lives and works in the United States. She is known for her work on the structure and interactions of hadrons and nuclei and her innovative use of machine learning techniques in lattice quantum field theory calculations.
Arthur Kent Kerman was a Canadian-American nuclear physicist, a fellow of the American Physical Society, Fellow of the American Academy of Arts and Sciences, and Fellow of the New York Academy of Sciences. He was a professor emeritus of physics at Massachusetts Institute of Technology’s Center for Theoretical Physics (CTP) and Laboratory for Nuclear Science He was known for his work on the theory of the structure of nuclei and on the theory of nuclear reactions.
Haiyan Gao is a Chinese-American nuclear physicist whose research concerns the structure of nucleons, quantum chromodynamics, and low-energy fundamental symmetries and symmetry violations, and has included accurate measurements of the size of protons. She is the Henry W. Newson Distinguished Professor of Physics at Duke University, and associate laboratory director for nuclear and particle physics at the Brookhaven National Laboratory. Beyond her research in physics, she is also known as having a "keen interest in promoting diversity, equity, and inclusion in the sciences".
Julia Apostolova Velkovska is a Bulgarian-American high energy particle physicist who is the Cornelius Vanderbilt Professor of Physics at Vanderbilt University. Her research considers nuclear matter in the extreme conditions generated at the Relativistic Heavy Ion Collider. She hopes that this work will help to explain the mechanisms that underpin the strong force.
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.
