弹性电子-质子散射与准弹性电子-氘核散射中后向角的横向束流自旋不对称性
核实验
2011-07-28 v3 高能物理 - 唯象学
核理论
摘要
我们测量了横向极化电子在质子上的弹性散射中的束流法向单自旋不对称性，并在氘核上的准弹性散射中进行了首次测量，测量条件为后向角（实验室散射角108度），动量转移平方Q²分别为0.22 GeV²/c²和0.63 GeV²/c²，束流能量分别为362 MeV和687 MeV。该不对称性源于双光子交换振幅与单光子交换振幅干涉的虚部。质子的结果与包含非弹性中间强子（πN）态的模型计算结果一致。利用准静态氘近似对中子散射的束流法向单自旋不对称性进行了估算，该估算也与理论相符。
引用
@article{arxiv.1103.3667,
title = {Transverse Beam Spin Asymmetries at Backward Angles in Elastic Electron-Proton and Quasi-elastic Electron-Deuteron Scattering},
author = {The G0 Collaboration and D. Androić and D. S. Armstrong and J. Arvieux and S. L. Bailey and D. H. Beck and E. J. Beise and J. Benesch and F. Benmokhtar and L. Bimbot and J. Birchall and P. Bosted and H. Breuer and C. L. Capuano and Y. -C. Chao and A. Coppens and C. A. Davis and C. Ellis and G. Flores and G. Franklin and C. Furget and D. Gaskell and M. T. W. Gericke and J. Grames and G. Guillard and J. Hansknecht and T. Horn and M. K. Jones and P. M. King and W. Korsch and S. Kox and L. Lee and J. Liu and A. Lung and J. Mammei and J. W. Martin and R. D. McKeown and A. Micherdzinska and M. Mihovilovic and H. Mkrtchyan and M. Muether and S. A. Page and V. Papavassiliou and S. F. Pate and 10 S. K. Phillips and P. Pillot and M. L. Pitt and M. Poelker and B. Quinn and W. D. Ramsay and J. -S. Real and J. Roche and P. Roos and J. Schaub and T. Seva and N. Simicevic and G. R. Smith and D. T. Spayde and M. Stutzman and R. Suleiman and V. Tadevosyan and W. T. H. van Oers and M. Versteegen and E. Voutier and W. Vulcan and S. P. Wells and S. E. Williamson and S. A. Wood and B. Pasquini and M. Vanderhaeghen},
journal= {arXiv preprint arXiv:1103.3667},
year = {2011}
}