Details

Autor(en) / Beteiligte

• Dalton, M. M.
• Adams, G. S.
• Ahmidouch, A.
• Angelescu, T.
• Arrington, J.
• Asaturyan, R.
• Baker, O. K.
• Benmouna, N.
• Bertoncini, C.
• Boeglin, W. U.
• Bosted, P. E.
• Breuer, H.
• Christy, M. E.
• Connell, S. H.
• Cui, Y.
• Danagoulian, S.
• Day, D.
• Dodario, T.
• Dunne, J. A.
• Dutta, D.
• Khayari, N. El
• 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. K.
• Joo, K.
• Kalantarians, N.
• Kelly, J. J.
• Keppel, C. E.
• Kubarovsky, V.
• Li, Y.
• Liang, Y.
• Malace, S.
• Markowitz, P.
• McKee, P.
• Meekins, D. G.
• Mkrtchyan, H.
• Moziak, B.
• Navasardyan, T.
• Niculescu, G.
• Niculescu, I.
• Opper, A. K.
• Ostapenko, T.
• Reimer, P. E.
• Reinhold, J.
• Roche, J.
• Rock, S. E.
• Schulte, E.
• Segbefia, E.
• Smith, C.
• Smith, G. R.
• Stoler, P.
• Tadevosyan, V.
• Tang, L.
• Tvaskis, V.
• Ungaro, M.
• Uzzle, A.
• Vidakovic, S.
• Villano, A.
• Vulcan, W. F.
• Wang, M.
• Warren, G.
• Wesselmann, F. R.
• Wojtsekhowski, B.
• Wood, S. A.
• Xu, C.
• Yuan, L.
• Zheng, X.
• Zhu, H.

Titel

Electroproduction of η mesons in the S11 ( 1535 ) resonance region at high momentum transfer

Ist Teil von

• Physical review. C, Nuclear physics, 2009-07, Vol.80 (1)

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2009

Link zum Volltext

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• The differential cross section for the process p(e,e{prime}p) {eta} has been measured at Q{sup 2} {approx} 5.7 and 7.0(GeV/c){sup 2} for center-of-mass energies from threshold to 1.8 GeV, encompassing the S{sub 11}(1535) resonance, which dominates the channel. This is the highest momentum-transfer measurement of this exclusive process to date. The helicity-conserving transition amplitude A{sub 1/2}, for the production of the S{sub 11}(1535) resonance, is extracted from the data. Within the limited Q{sup 2} now measured, this quantity appears to begin scaling as Q{sup -3} - a predicted, but not definitive, signal of the dominance of perturbative QCD at Q{sup 2} {approx} 5 (GeV/c){sup 2}.