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Top Quarks

All articles tagged with #top quarks

science1 year ago

Historic Lead Atom Collision Yields Top Quarks

The ATLAS collaboration at CERN's Large Hadron Collider has observed top quarks in collisions between lead ions for the first time, marking a significant step in understanding the early universe's conditions. This discovery allows scientists to study the quark-gluon plasma, a state of matter present just after the Big Bang, and use top quarks as time markers to probe its evolution. The findings also open avenues for exploring momentum distribution within atomic nuclei and further understanding fundamental forces.

via IFLScience|
#cern#large-hadron-collider#particle-physics
physics2 years ago

Advancements in Quantum Entanglement: Observing Top Quarks and Accelerating Creation

Physicists at CERN's ATLAS experiment have observed entanglement between pairs of top quarks, demonstrating that entanglement can occur at energies much higher than typical laboratory experiments. This finding suggests that particle-physics facilities like the Large Hadron Collider can be used to study quantum mechanics and quantum information. The top quark's spin was inferred by measuring the spins of its decay products, and the degree of entanglement was deduced from the angular separation between the charged leptons formed in the collision. This result opens up possibilities for studying other quantum information concepts and interdisciplinary collaboration in the search for physics beyond the Standard Model.

via physicsworld.com|
#atlas-experiment#cern#large-hadron-collider
science2 years ago

"Particle Trio Shatters Expectations at Large Hadron Collider"

The ATLAS experiment at the Large Hadron Collider has found that the production rate of a trio of particles, known as ttW, is about 20% higher than predicted by the Standard Model of particle physics. The excess could be due to new physics beyond the Standard Model or the lack of necessary elements in the current models. The measurement will help refine the Standard Model and aid in the study of even rarer processes occurring during proton collisions.

via Phys.org|
#large-hadron-collider#particle-physics#science
science2 years ago

"New Observations in Particle Physics: Four Top Quarks and W Boson Mass"

The ATLAS and CMS collaborations have both observed the simultaneous production of four top quarks, a very rare process predicted by the Standard Model theory. This is the first direct observation of this phenomenon, which is 70 thousand times rarer than the production of top quark-antiquark pairs. Both experiments used novel machine-learning techniques to detect the elusive four-top-quark signature, which can be highly varied and challenging to detect. This observation is an exciting new step in learning more about top quarks and physics beyond the Standard Model.

via Phys.org|
#atlas#cms#large-hadron-collider