Compton Scattering from the Deuteron and Extracted Neutron Polarizabilities

Phys.Rev.Lett.90:192501,2003 Differential cross sections for Compton scattering from the deuteron were measured at MAX-lab for incident photon energies of 55 MeV and 66 MeV at nominal laboratory angles of $45^\circ$, $125^\circ$, and $135^\circ$. Tagged photons were scattered from liquid deuterium a...

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Hauptverfasser: Lundin, M, Adler, J. -O, Boland, M, Fissum, K, Glebe, T, Hansen, K, Isaksson, L, Kaltschmidt, O, Karlsson, M, Kossert, K, Levchuk, M. I, Lilja, P, Lindner, B, L'vov, A. I, Nilsson, B, Oner, D. E, Poech, C, Proff, S, Sandell, A, Schröder, B, Schumacher, M, Sims, D. A
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Sprache:eng
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Zusammenfassung:Phys.Rev.Lett.90:192501,2003 Differential cross sections for Compton scattering from the deuteron were measured at MAX-lab for incident photon energies of 55 MeV and 66 MeV at nominal laboratory angles of $45^\circ$, $125^\circ$, and $135^\circ$. Tagged photons were scattered from liquid deuterium and detected in three NaI spectrometers. By comparing the data with theoretical calculations in the framework of a one-boson-exchange potential model, the sum and difference of the isospin-averaged nucleon polarizabilities, $\alpha_N + \beta_N = 17.4 \pm 3.7$ and $\alpha_N - \beta_N = 6.4 \pm 2.4$ (in units of $10^{-4}$ fm$^3$), have been determined. By combining the latter with the global-averaged value for $\alpha_p - \beta_p$ and using the predictions of the Baldin sum rule for the sum of the nucleon polarizabilities, we have obtained values for the neutron electric and magnetic polarizabilities of $\alpha_n= 8.8 \pm 2.4$(total) $\pm 3.0$(model) and $\beta_n = 6.5 \mp 2.4$(total) $\mp 3.0$(model), respectively.
DOI:10.48550/arxiv.nucl-ex/0204014