Proton collision C014 / 1794
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Proton collision C014 / 1794
Particle tracks from a proton-proton collision seen by the CMS (compact muon solenoid) detector at CERN (the European particle physics laboratory) near Geneva, Switzerland. Before the collision the ions had been accelerated to 7 TeV (tera electron volts) by the large hadron collider (LHC). The collision (yellow dot) produced a xi-zero-b-star particle. The particle was not seen, but was revealed by its decay products. The xi-zero-b-star particle decayed into a pion (blue line) and a xi-b particle, which in turn decayed into a xi-minus particle and J/psi particle. None of these three particles lasted long enough to be seen, but their decay products were detected. The J/psi decayed into a pair of muons (red lines). The xi-minus decayed into a pion (pink line) and a lambda baryon (yellow dotted line), which then decayed into a proton and a pion (purple lines)
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Media ID 9226359
© CMS EXPERIMENT, CERN/SCIENCE PHOTO LIBRARY
Apparatus Baryon Cern Collision Compact Muon Solenoid Cosmological Cosmology Decay Products European Particle Physics Laboratory Experiment Fundamental Particles Geneva Lambda Large Hadron Collider Matter Muon Particle Accelerator Particle Detector Particle Physics Particle Track Pion Proton Proton Proton Proton Proton Collision Structure Of Matter Subatomic Particles Switzerland Trace Traces Tracks Trajectories Trajectory Physical
EDITORS COMMENTS
This print captures the intricate dance of subatomic particles resulting from a proton-proton collision at CERN, the renowned European particle physics laboratory near Geneva, Switzerland. The collision occurred within the CMS (compact muon solenoid) detector, which meticulously traces and records these elusive events. Before this momentous collision, protons were accelerated to an astonishing 7 TeV by the powerful large hadron collider (LHC). The yellow dot in the image represents the actual point of impact where a xi-zero-b-star particle was produced. Although invisible to our eyes, its existence was unveiled through its decay products. The complex chain reaction began with the xi-zero-b-star decaying into a pion (blue line) and a xi-b particle. Subsequently, the xi-b particle further disintegrated into a xi-minus particle and J/psi particle. None of these three fleeting particles lasted long enough to be directly observed; however, their decay products were skillfully detected. The J/psi decayed into two muons represented by red lines in this mesmerizing snapshot. Additionally, we can trace the trajectory of other particles such as pions (pink and purple lines), lambda baryons (yellow dotted line), and protons (purple lines). This photograph not only showcases cutting-edge research but also offers us a glimpse into fundamental aspects of matter's structure on an infinitesimally small scale. It serves as a testament to humanity's relentless pursuit of understanding our universe's most mysterious building blocks through experiments conducted at CERN's remarkable facility.
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