Exotic atomic nucleus sheds light on the world of quarks

Experiments at CERN and the Accelerator Laboratory in Jyväskylä, Finland, have revealed that the radius of an exotic nucleus of aluminum, 26mAl, is much larger than previously thought. The result, described in a paper just ...

LHCb: Correlations show nuances of the particle birth process

High-energy ion collisions at the Large Hadron Collider are capable of producing a quark-gluon plasma. But are heavy atomic nuclei really necessary for its formation? And above all: how are secondary particles later born ...

The quark model: A personal perspective

The idea that protons and neutrons were composed of even smaller particles, with non-integral electric charges, was proposed in 1963/64 by Andre Petermann, George Zweig and Murray Gell-Mann, who dubbed them "quarks." It was ...

The LHC lead-ion collision run starts

The LHC is back delivering collisions to the experiments after the successful leak repair in August. But instead of protons, it is now the turn of lead ion beams to collide, marking the first heavy-ion run in five years.

Researchers make progress in vector meson spin physics

A research team led by Prof. Wang Qun from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) has made significant progress in the theoretical study of vector meson spin physics, ...

New driver for shapes of small quark-gluon plasma drops?

New measurements of how particles flow from collisions of different types of particles at the Relativistic Heavy Ion Collider (RHIC) have provided new insights into the origin of the shape of hot specks of matter generated ...

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