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Exotic four-quark particle spotted at Large Hadron Collider
LHC four-quark composite particle
2021/8/11
Rare tetraquark is one of dozens of non-elementary particles discovered by the accelerator, and could help to test theories about strong nuclear force.
Using particle accelerators to investigate the quark-gluon plasma of the infant universe
QGP atom neutron
2021/8/10
A new special edition of EPJ Special Topics brings together several papers that detail our understanding of Quark-Gluon Plasma (QGP) and the processes that transformed it into the baryonic matter we a...
CERN's Large Hadron Collider announced Tuesday that researchers discovered a remarkable class of particles known as pentaquarks that could reshape scientists' understanding about the properties of mat...
Traditionally, particle accelerators have relied on electric fields generated by radio waves to drive electrons and other particles close to the speed of light. But in radio-frequency machines there i...
Information propagation for interacting particle systems
Information propagation interacting particle systems
2010/11/8
We show that excitations of interacting quantum particles in lattice models always propagate with a finite speed of sound. Our argument is simple yet general and shows that by focusing on the physical...
Effect of particle size on nonlinear refractive index of Au nanoparticle in PVA solution
Nonlinear properties Z-scan technique nanoparticles
2010/6/30
Nonlinear refractive index of Au nanoparticle suspended in PVA solution was measured using a single beam Z-scan technique. Measurements were carried out using a green CW laser beam operated at 532 nm ...
Green´s Function for Particle of Spin 0 and 1/2 in the Field of Volkov Plane Wave
Green´ s function Langevin equation stochastic quantization
2010/4/9
The Green´s functions for relativistic particles, with and without spin in interaction with an electromagnetic plane wave, are obtained via Parisi-Wu stochastic quantization method after having ...
The electromagnetic current of spin-1 composite particles does not transform properly under rotations if only the valence contribution is considered in the light-front model. In particular, the plus c...
Particle Ratio Fluctuations and Isobaric Ensemble for Chemical Freeze-out Scenario
Particle Ratio Fluctuations Isobaric Ensemble Chemical Freeze-out Scenario
2010/10/19
In this work, we study the behavior of event-by-event distribution of particle ratios in Gran Canonical and Isobaric ensemble.We show that the experimental value of the width in the K=¼ ratio d...