The PrimEx experiment
(Laboratory web sites)
The image shows the crystal calorimeter built for PrimEx.
The Primakoff experiment (PrimEx) is to perform a precise measurement of the neutral pion lifetime using the small angle coherent photoproduction of the pi-zero in the Coulomb field of a nucleus, i.e. the Primakoff effect. The pi0 to gamma-gamma decay proceeds primarily via the chiral anomaly and represents one of the most definitive tests of low-energy QCD.
Prof. Ashot Gasparian (NC A&T) is spokesperson for PrimEx.
More information can be found at the PrimEx experiment website.
The Feynman diagram for the Primakoff effect
The NCA&T group in 2003. Mr. Marvin Payen, 2nd from the left, has enrolled in Hampton University's physics graduate program.
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