Onset of quark-hadron duality in pion electroproduction

T. Navasardyan, G. S. Adams, A. Ahmidouch, T. Angelescu, J. Arrington, R. Asaturyan, O. K. Baker, N. Benmouna, C. Bertoncini, H. P. Blok, W. U. Boeglin, P. E. Bosted, H. Breuer, M. E. Christy, S. H. Connell, Y. Cui, M. M. Dalton, S. Danagoulian, D. Day, T. DodarioJ. A. Dunne, D. Dutta, N. El Khayari, R. Ent, H. C. Fenker, V. V. Frolov, L. Gan, D. Gaskell, K. Hafidi, W. Hinton, R. J. Holt, T. Horn, G. M. Huber, E. Hungerford, X. Jiang, M. Jones, K. Joo, N. Kalantarians, J. J. Kelly, C. E. Keppel, V. Kubarovski, Y. Li, Y. Liang, S. Malace, P. Markowitz, E. McGrath, P. McKee, D. G. Meekins, H. Mkrtchyan, B. Moziak

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Abstract

A large data set of charged-pion (π±) electroproduction from both hydrogen and deuterium targets has been obtained spanning the low-energy residual-mass region. These data conclusively show the onset of the quark-hadron duality phenomenon, as predicted for high-energy hadron electroproduction. We construct several ratios from these data to exhibit the relation of this phenomenon to the high-energy factorization ansatz of electron-quark scattering and subsequent quarkâ†pion production mechanisms.

Original languageEnglish (US)
Article number022001
JournalPhysical review letters
Volume98
Issue number2
DOIs
StatePublished - 2007

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