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Observation of color-transparency in diffractive dissociation of pions

E791 Collaboration·E. M. Aitala
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Abstract

We have studied the diffractive dissociation into di-jets of 500 GeV/c pions scattering coherently from carbon and platinum targets. Extrapolating to asymptotically high energies (where t_{min} approaches 0) we find that when the per-nucleus cross-section for this process is parameterized as $σ= σ_0 A^α, α$ has values near 1.6, the exact result depending on jet transverse momentum. These values are in agreement with those predicted by theoretical calculations of color-transparency.

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E791 Collaboration, E. M. Aitala. 2000-10-17. Observation of color-transparency in diffractive dissociation of pions. https://doi.org/10.1103/physrevlett.86.4773

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