Περίληψη:
High-precision 1H(e, elp)φ0 measurements at Q2 = 0.126 (GeV/c)2 are presented. It allows the determination of quadrupole amplitudes in the γ*N → △ transition, in which the reliability of electroproduction models was simultaneously tested. The derived quadrupole-to-dipole (I = 3/2) amplitude ratios, RSM = (-6.5 ± 0.2stat+sys ± 2.5mod)% and REM = (-2.1 ± 0.2stat+sys ± 2.0mod)%, are dominated by model error.
Συγγραφείς:
Mertz, C.
Vellidis, C.E.
Alarcon, R.
Barkhuff, D.H.
Bernstein, A.M.
Bertozzi, W.
Burkert, V.
Chen, J.
Comfort, J.R.
Dodson, G.
Dow, K.
Farkhondeh, M.
Finn, J.M.
Gilad, S.
Gothe, R.W.
Jiang, X.
Joo, K.
Kaloskamis, N.I.
Karabarbounis, A.
Kelly, J.J.
Kowalski, S.
Kunz, C.
Lourie, R.W.
McIntyre, J.I.
Milbrath, B.D.
Miskimen, R.
Mitchell, J.H.
Papanicolas, C.N.
Perdrisat, C.F.
Sarty, A.J.
Shaw, J.
Soong, S.-B.
Tieger, D.
Tschalær, C.
Turchinetz, W.
Ulmer, P.E.
Van Verst, S.
Warren, G.A.
Weinstein, L.B.
Williamson, S.
Woo, R.J.
Young, A.
Λέξεις-κλειδιά:
High energy physics; Magnetic moments; Mass transfer; Mathematical models; Phase transitions; Photons, Electroproduction models; Virtual photon flux, Quantum theory
