Magnetic dipole moment of the S(11)(1535) from the gamma p ---> gamma eta p reaction

Chiang, Wen-Tai; Yang, Shin Nan; Vanderhaeghen, Marc; Drechsel, Dieter

doi:10.1016/S0375-9474(03)01160-6

Magnetic dipole moment of the S(11)(1535) from the gamma p ---> gamma eta p reaction

Nov, 2002

25 pages

Published in:

Nucl.Phys.A 723 (2003) 205-225

e-Print:

nucl-th/0211061 [nucl-th]

DOI:

10.1016/S0375-9474(03)01160-6

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Abstract:

The \gamma p \to \gamma \eta p reaction in the S11(1535) resonance region is investigated as a method to access the S11(1535) magnetic dipole moment. To study the feasibility, we perform calculations of the \gamma p \to \gamma \eta p process within an effective Lagrangian approach containing both the S11 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 S11(1535) magnetic dipole moment.

Note:

25 pages, 8 figures, slightly modified version to appear in Nucl. Phys. A

14.20.Gk
12.39.Jh
13.60.Fz
Magnetic moments
S 11 (1535) resonance
Meson photoproduction
Effective Lagrangian
Quark model
S11(1535) resonance
photon p: inelastic scattering

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