弹性电子中的光束正常单旋不对称散射$^{28} $ si和$^{90} $ zr

论文标题

弹性电子中的光束正常单旋不对称散射$^{28} $ si和$^{90} $ zr

Beam-Normal Single Spin Asymmetry in Elastic Electron Scattering off $^{28}$Si and $^{90}$Zr

论文作者

Esser, A., Thiel, M., Achenbach, P., Aulenbacher, K., Aulenbacher, S., Baunack, S., Bosnar, D., Caiazza, S., Christmann, M., Dehn, M., Distler, M. O., Doria, L., Eckert, P., Gorchtein, M., Guelker, P., Herrmann, P., Hoek, M., Kegel, S., Klag, P., Kreidel, H. -J., Littich, M., Lunkenheimer, S., Maas, F. E., Makek, M., Merkel, H., Mihovilovivc, M., Mueller, J., Mueller, U., Pochodzalla, J., Schlimme, B. S., Spreckels, R., Tioukine, V., Sfienti, C.

论文摘要

我们在弹性散射570 MEV横向散射中，对光束正常单旋旋差$ a _ {\ mathrm {n}} $进行了新的测量。研究的运动学允许与$^{12} $ c上的以前的结果进行全面比较。从$^{12} $ c到$^{90} $ ZR，在质量制度中没有观察到梁正常单旋不对称的显着质量依赖性。

We report on a new measurement of the beam-normal single spin asymmetry $A_{\mathrm{n}}$ in the elastic scattering of 570 MeV transversely polarized electrons off $^{28}$Si and $^{90}$Zr at $Q^{2}=0.04\, \mathrm{GeV}^2/c^2$. The studied kinematics allow for a comprehensive comparison with former results on $^{12}$C. No significant mass dependence of the beam-normal single spin asymmetry is observed in the mass regime from $^{12}$C to $^{90}$Zr.

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