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Lattice Qcd

All articles tagged with #lattice qcd

Muon g-2 Mystery Reconciled as Standard Model Gains Ground
science29 days ago

Muon g-2 Mystery Reconciled as Standard Model Gains Ground

A long-standing puzzle about the muon's anomalous magnetic moment (g-2) is resolved by a new, ultra-precise lattice QCD calculation that aligns the Standard Model prediction with experimental measurements within half a standard deviation. The result removes the need for a hypothetical fifth force and reinforces quantum field theory as the foundation of particle physics, though it may still leave a narrow window for new physics to appear in future experiments.

via SciTechDaily|
#g-2#lattice-qcd#muon
Muon mystery solved: precision calc keeps the Standard Model intact
science1 month ago

Muon mystery solved: precision calc keeps the Standard Model intact

A Nature paper using lattice QCD and hybrid simulations shows the muon's anomalous magnetic moment is consistent with the Standard Model within about half a standard deviation and 11 decimal places. The result suggests the earlier discrepancy hinting at a fifth force was a calculation artefact, not new physics, while tightening constraints on possible beyond‑SM explanations through a precise treatment of hadronic vacuum polarization.

via Ars Technica|
#hadronic-vacuum-polarization#lattice-qcd#muon
"New Insights into Proton Spin from Combined Theory and Experiment"
science2 years ago

"New Insights into Proton Spin from Combined Theory and Experiment"

A new study combining experimental data and lattice Quantum Chromodynamics (QCD) calculations has provided deeper insights into the contributions of gluons to the proton's spin. This collaborative effort, led by Joseph Karpie at Jefferson Lab, aims to resolve the decades-old mystery of proton spin and paves the way for a three-dimensional understanding of the proton's structure.

via Phys.org|
#gluons#jefferson-lab#lattice-qcd
Discovery of the Beautiful Strongly Bound Dibaryon Particle.
physics3 years ago

Discovery of the Beautiful Strongly Bound Dibaryon Particle.

Physicists from the Tata Institute of Fundamental Research and The Institute of Mathematical Science have predicted the existence of a new subatomic particle, a deeply bound dibaryon made entirely from bottom quarks. The dibaryon, named D6b, is composed of two triply bottom Omega baryons and is predicted to be 40 times stronger than the deuteron, making it the most strongly bound beautiful dibaryon in the visible universe. The finding provides insight into the strong forces in baryon-baryon interactions and motivates the search for heavier exotic subatomic particles in next-generation experiments.

via SciTechDaily|
#dibaryons#lattice-qcd#physics
Unveiling the Mysteries of Proton's Inner Structure and Gluonic Gravitational Form Factors.
physics3 years ago

Unveiling the Mysteries of Proton's Inner Structure and Gluonic Gravitational Form Factors.

Scientists have determined the gluonic gravitational form factors of the proton, which describe the distribution of the proton's mass and energy. The research was conducted using data from an electron-proton scattering experiment and analyzed using quantum chromodynamics and lattice QCD. The results provide insight into the structure of the proton and could aid in the development of an electron-ion collider, a proposed particle accelerator that could further advance our understanding of the fundamental building blocks of matter.

via Nature.com|
#electron-ion-collider#gluonic-gravitational-form-factors#lattice-qcd