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Onset of quark-hadron duality in pion electroproduction |
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| Authors: | Navasardyan T Adams G S Ahmidouch A Angelescu T Arrington J Asaturyan R Baker O K Benmouna N Bertoncini C Blok H P Boeglin W U Bosted P E Breuer H Christy M E Connell S H Cui Y Dalton M M Danagoulian S Day D Dodario T Dunne J A Dutta D El Khayari N Ent R Fenker H C Frolov V V Gan L Gaskell D Hafidi K Hinton W Holt R J Horn T Huber G M Hungerford E Jiang X Jones M Joo K Kalantarians N Kelly J J Keppel C E Kubarovski V Li Y Liang Y Malace S Markowitz P McGrath E McKee P Meekins D G Mkrtchyan H Moziak B Niculescu G Niculescu I Opper A K Ostapenko T Reimer P Reinhold J Roche J Rock S E Schulte E |
| Affiliation: | Yerevan Physics Institute, Yerevan, Armenia. |
| Abstract: | A large data set of charged-pion (pi+/-) 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 quark-->pion production mechanisms. |
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