A watershed: the emergence of QCD

Published 2013 | Version v1

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David Gross and Frank Wilczek, when they received the Nobel prize in 2004. (Image credit: D Gross.) md5:112fef3228cfc55aaf8ab2b578ab9b5c	272.1 kB	Preview Download
Fig. 1. Asymptotic freedom, a principal dynamical property of QCD, predicts the logarithmic decrease of the strong interaction coupling as energy increases or distance decreases. This fi gure shows the current agreement of QCD predictions with many experiments. md5:5be9daf9084c94ba73590a580a1b24c0	72.5 kB	Preview Download
Fig. 2. Hadrons emerging from high-energy collisions at large transverse momentum occur in nearly collinear “jets”. According to QCD the jets are initiated by quarks, antiquarks, and gluons, and inherit their energy and momentum. Pictured here is an event from the CMS collaboration at the LHC, which features six jets. md5:7c394c821dc1fdfec97ae89968d2868c	281.5 kB	Preview Download