magnetic moments;
S-11(1535) resonance;
meson photoproduction;
effective Lagrangian;
quark model;
D O I:
10.1016/S0375-9474(03)01160-6
中图分类号:
O57 [原子核物理学、高能物理学];
学科分类号:
070202 ;
摘要:
The gammap --> gammaetap reaction in the S-11(1535) resonance region is investigated as a method to access the S-11 (1535) magnetic dipole moment. To study the feasibility, we perform calculations of the gammap --> gammaetap process within an effective Lagrangian approach containing both the S-11 resonant mechanism and a background of non-resonant contributions. Predictions are made for the forthcoming experiments. In particular, we focus on the sensitivity of cross sections and photon asymmetries to the S-11 (1535) magnetic dipole moment. (C) 2003 Elsevier Science B.V. All rights reserved.