Hadrons are composite physical systems consisting of quarks bound together by gluons via the non-Abelian SU(3) color gauge interaction of quantum chromodynamics (QCD). They are color-neutral and fall into two main classes: baryons, composed of three valence quarks (qqq), and mesons, composed of a quark–antiquark pair (q\bar{q}). Their structure is governed by confinement, asymptotic freedom, and dynamical chiral symmetry breaking, leading to rich spectra of resonances and internal parton distributions. Hadrons dominate strongly interacting matter, determine the properties of nuclear systems, and serve as primary probes of QCD in both perturbative and nonperturbative regimes.
χc1(3872) is an intriguing particle. It was first discovered over 20 years ago in B+ meson decays by the BELLE collaboration, KEK, Japan. Since then, the LHCb collaboration reported it in 2010 and has measured some of its ...
General Physics
Jul 16, 2024
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The Belle II experiment is a large research effort aimed at precisely measuring weak-interaction parameters, studying exotic hadrons (i.e., a class of subatomic particles) and searching for new physical phenomena. This effort ...
The LHCb collaboration reported the observation of the hyperon Σ+→pμ+μ- rare decay at the XV International Conference on Beauty, Charm, Hyperons in Hadronic Interactions (BEACH 2024) in Charleston, South Carolina, U.S. A ...
General Physics
Jun 28, 2024
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438
The molecules that make up the matter around us are in constant motion. What if we could harness that energy and put it to use?
General Physics
Jun 6, 2024
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93
Exploring the complex domain of subatomic particles, researchers at the The Institute of Mathematical Science (IMSc) and the Tata Institute of Fundamental Research (TIFR) have recently published a novel finding in the journal ...
General Physics
May 15, 2024
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163
The team of physicists working on the LHCb Collaboration at CERN has found that bottom quarks are more likely to exist in baryons than mesons as the density of the environment in which they exist increases. In their paper ...
The LHCb collaboration recently reported on the arXiv preprint server the first observation of the decay of the Bc+ meson (composed of two heavy quarks, b and c) into a J/ψ charm-anticharm quark bound state and a pair of ...
General Physics
Mar 4, 2024
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118
When a high-energy photon strikes a proton, secondary particles diverge in a way that indicates that the inside of the proton is maximally entangled. An international team of physicists with the participation of the Institute ...
Quantum Physics
Jan 18, 2024
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500
Quark gluon plasma (QGP) is an exciting state of matter that scientists create in a laboratory by colliding two heavy nuclei. These collisions produce a QGP fireball. The fireball expands and cools following the laws of hydrodynamics, ...
General Physics
Dec 20, 2023
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