Topic: Physics

Physicists from The University of Manchester have discovered a new subatomic particle called Ξcc⁺ (Xi-cc-plus) at the Large Hadron Collider. This particle is similar to protons but made up of heavier charm quarks and down quark.

The newly discovered Ξcc⁺ is part of the same family as the proton, which was first identified in Manchester by Ernest Rutherford and colleagues between 1917-1919. While a proton contains two up quarks and one down quark, the Ξcc⁺ replaces the up quarks with heavier charm quarks.

The discovery marks the first particle detection using the upgraded LHCb detector, which is part of a major international effort involving more than 1,000 researchers across 20 countries. The United Kingdom contributed more than any other nation, with Manchester providing significant leadership in the project.

Professor Chris Parkes, head of the University's Department of Physics and Astronomy, led the international collaboration during the installation and early operation of the upgraded LHCb detector. He also oversaw the United Kingdom's involvement in the project for more than ten years, guiding it from initial approval through completion.

The Manchester LHCb team designed and built essential parts of the upgraded tracking system, including silicon pixel detector modules assembled in the University's Schuster Building. These components are critical for accurately tracking particle decays and identifying signals such as the Ξcc⁺.

Why It Matters

This discovery showcases the extraordinary capability of the upgraded LHCb detector and the strength of UK and Manchester contributions to the experiment. It also highlights the importance of curiosity-driven research in advancing our understanding of the universe.

Key Facts

• Physicists from The University of Manchester discovered a new subatomic particle called Ξcc⁺ (Xi-cc-plus) at CERN's Large Hadron Collider.
• The Ξcc⁺ is similar to protons but made up of heavier charm quarks and down quark.
• This marks the first particle detection using the upgraded LHCb detector, which is part of a major international effort involving more than 1,000 researchers across 20 countries.
• The United Kingdom contributed more than any other nation, with Manchester providing significant leadership in the project.
• Professor Chris Parkes led the international collaboration during the installation and early operation of the upgraded LHCb detector.

Key Terms

Charm quarks

A type of subatomic particle that is heavier than up or down quarks.

Implications

This discovery showcases the extraordinary capability of the upgraded LHCb detector and the strength of UK and Manchester contributions to the experiment. It also highlights the importance of curiosity-driven research in advancing our understanding of the universe.