NP 2025 | U.S. DOE Office of Science(SC)

A depiction of proposed four-quark structures and their sizes relative to the proton. The labels u and c represent the up and charm quarks, respectively, while the labels u and c with bars indicate the corresponding antiquarks.

Can Four-Quark States Arise from Inside the Proton Itself?

Theoretical calculations suggest charm tetraquarks may be less compact than previously thought.

An artist’s impression of a quantum electrodynamics simulation using 100 qubits of an IBM quantum computer. The spheres and lines denote the qubits and connectivity of the IBM quantum processor; gold spheres denote the qubits used in the simulation.

Nuclear Physicists Create Scalable Quantum Circuits to Simulate Fundamental Physics

Researchers developed and executed algorithms for preparing the quantum vacuum and hadrons on more than 100 qubits of IBM quantum computers.

A photon (γ) and a jet of other particles emerges from a proton-proton (p-p) collision (left). But in a deuteron (d)-gold nucleus (Au) collision (right), the jet loses energy while the photon is not affected. Neutral pions (π0) are proxies for the jet.

Fresh Direct Evidence for Tiny Drops of Quark-Gluon Plasma

Particles of light from collisions of deuterons with gold ions provide direct evidence that energetic jets get stuck.

An artist’s impression of an analog quantum computer in which atoms are manipulated by lasers to simulate quantum many-body systems.

Scientists Take an Important Step toward Mitigating Errors in Analog Quantum Simulations of Many-Body Problems

A new framework for quantifying uncertainties increases the predictive power of analog quantum simulations.

Illustration of quarkonium states interacting with co-moving particles in relativistic heavy ion collisions.

Scientists Measure the Temperature Achieved in Heavy Ion Collisions by Looking at Broken Particles

First precise measurement of a hard to detect bound charm quark pair state indicates it is not affected by the medium in high-energy proton-lead collisions.

2025

Can Four-Quark States Arise from Inside the Proton Itself?

Nuclear Physicists Create Scalable Quantum Circuits to Simulate Fundamental Physics

Fresh Direct Evidence for Tiny Drops of Quark-Gluon Plasma

Scientists Take an Important Step toward Mitigating Errors in Analog Quantum Simulations of Many-Body Problems

Scientists Measure the Temperature Achieved in Heavy Ion Collisions by Looking at Broken Particles

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