Quantum color transparency
We propose a quantum description of color transparency in terms of light-cone operator matrix elements. The fundamental quantity needed is the distribution amplitude {phi}{sub {ital A}}({ital x},{ital Q}{sup 2}) for each hadron that participates in the elastic scattering in the nuclear target. Two l...
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Veröffentlicht in: | Physical review letters 1990-11, Vol.65 (19), p.2343-2346 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We propose a quantum description of color transparency in terms of light-cone operator matrix elements. The fundamental quantity needed is the distribution amplitude {phi}{sub {ital A}}({ital x},{ital Q}{sup 2}) for each hadron that participates in the elastic scattering in the nuclear target. Two large scales, {ital Q}{sup 2} and a mass scale going like {ital A}{sup 1/3} for {ital A}{much gt}1, occur in a perturbatively consistent description. We find that the limit of large {ital A} and moderate {ital Q}{sup 2} may shed light on controversies over the applicability of perturbative QCD to exclusive processes. |
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ISSN: | 0031-9007 1079-7114 |
DOI: | 10.1103/PhysRevLett.65.2343 |