학술논문
New Measurements of the Transverse Beam Asymmetry for Elastic Electron Scattering from Selected Nuclei
Document Type
Working Paper
Author
HAPPEX, The; Collaborations, PREX; Abrahamyan, S.; Acha, A.; Afanasev, A.; Ahmed, Z.; Albataineh, H.; Aniol, K.; Armstrong, D. S.; Armstrong, W.; Arrington, J.; Averett, T.; Babineau, B.; Bailey, S. L.; Barber, J.; Barbieri, A.; Beck, A.; Bellini, V.; Beminiwattha, R.; Benaoum, H.; Benesch, J.; Benmokhtar, F.; Bertin, P.; Bielarski, T.; Boeglin, W.; Bosted, P.; Butaru, F.; Burtin, E.; Cahoon, J.; Camsonne, A.; Canan, M.; Carter, P.; Chang, C. C.; Cates, G. D.; Chao, Y. C.; Chen, C.; Chen, J. P.; Choi, Seonho; Chudakov, E.; Cisbani, E.; Craver, B.; Cusanno, F.; Dalton, M. M.; De Leo, R.; de Jager, K.; Deconinck, W.; Decowski, P.; Deepa, D.; Deng, X.; Deur, A.; Dutta, D.; Etile, A.; Ferdi, C.; Feuerbach, R. J.; Finn, J. M.; Flay, D.; Franklin, G. B.; Friend, M.; Frullani, S.; Fuchey, E.; Fuchs, S. A.; Fuoti, K.; Garibaldi, F.; Gasser, E.; Gilman, R.; Giusa, A.; Glamazdin, A.; Glesener, L. E.; Gomez, J.; Gorchtein, M.; Grames, J.; Grimm, K.; Gu, C.; Hansen, O.; Hansknecht, J.; Hen, O.; Higinbotham, D. W.; Holmes, R. S.; Holmstrom, T.; Horowitz, C. J.; Hoskins, J.; Huang, J.; Humensky, T. B.; Hyde, C. E.; Ibrahim, H.; Itard, F.; Jen, C. M.; Jensen, E.; Jiang, X.; Jin, G.; Johnston, S.; Katich, J.; Kaufman, L. J.; Kelleher, A.; Kliakhandler, K.; King, P. M.; Kolarkar, A.; Kowalski, S.; Kuchina, E.; Kumar, K. S.; Lagamba, L.; Lambert, D.; LaViolette, P.; Leacock, J.; Leckey IV, J.; Lee, J. H.; LeRose, J. J.; Lhuillier, D.; Lindgren, R.; Liyanage, N.; Lubinsky, N.; Mammei, J.; Mammoliti, F.; Margaziotis, D. J.; Markowitz, P.; Mazouz, M.; McCormick, K.; McCreary, A.; McNulty, D.; Meekins, D. G.; Mercado, L.; Meziani, Z. E.; Michaels, R. W.; Mihovilovic, M.; Moffit, B.; Monaghan, P.; Muangma, N.; Munoz-Camacho, C.; Nanda, S.; Nelyubin, V.; Neyret, D.; Nuruzzaman; Oh, Y.; Otis, K.; Palmer, A.; Parno, D.; Paschke, K. D.; Phillips, S. K.; Poelker, M.; Pomatsalyuk, R.; Posik, M.; Potokar, M.; Prok, K.; Puckett, A. J. R.; Qian, X.; Qiang, Y.; Quinn, B.; Rakhman, A.; Reimer, P. E.; Reitz, B.; Riordan, S.; Roche, J.; Rogan, P.; Ron, G.; Russo, G.; Saenboonruang, K.; Saha, A.; Sawatzky, B.; Shahinyan, A.; Silwal, R.; Singh, J.; Sirca, S.; Slifer, K.; Snyder, R.; Solvignon, P.; Souder, P. A.; Sperduto, M. L.; Subedi, R.; Stutzman, M. L.; Suleiman, R.; Sulkosky, V.; Sutera, C. M.; Tobias, W. A.; Troth, W.; Urciuoli, G. M.; Ulmer, P.; Vacheret, A.; Voutier, E.; Waidyawansa, B.; Wang, D.; Wang, K.; Wexler, J.; Whitbeck, A.; Wilson, R.; Wojtsekhowski, B.; Yan, X.; Yao, H.; Ye, Y.; Ye, Z.; Yim, V.; Zana, L.; Zhan, X.; Zhang, J.; Zhang, Y.; Zheng, X.; Ziskin, V.; Zhu, P.
Source
Phys. Rev. Lett. 109, (2012) 192501
Subject
Language
Abstract
We have measured the beam-normal single-spin asymmetry $A_n$ in the elastic scattering of 1-3 GeV transversely polarized electrons from $^1$H and for the first time from $^4$He, $^{12}$C, and $^{208}$Pb. For $^1$H, $^4$He and $^{12}$C, the measurements are in agreement with calculations that relate $A_n$ to the imaginary part of the two-photon exchange amplitude including inelastic intermediate states. Surprisingly, the $^{208}$Pb result is significantly smaller than the corresponding prediction using the same formalism. These results suggest that a systematic set of new $A_n$ measurements might emerge as a new and sensitive probe of the structure of heavy nuclei.
Comment: 5 pages, 3 figures, accepted by PRL. v3: fixed one author name and affiliation, otherwise no change
Comment: 5 pages, 3 figures, accepted by PRL. v3: fixed one author name and affiliation, otherwise no change