| Autor: |
Paolone, M., Malace, S. P., Strauch, S., Albayrak, I., Arrington, J., Berman, B. L., Brash, E. J., Briscoe, B., Camsonne, A., Chen, J. -P., Christy, M. E., Chudakov, E., Cisbani, E., Craver, B., Cusanno, F., Ent, R., Garibaldi, F., Gilman, R., Glamazdin, O., Glister, J., Higinbotham, D. W., Hyde-Wright, C. E., Ilieva, Y., de Jager, C. W., Jiang, X., Jones, M. K., Keppel, C. E., Khrosinkova, E., Kuchina, E., Kumbartzki, G., Lee, B., Lindgren, R., Margaziotis, D. J., Meekins, D., Michaels, R., Park, K., Pentchev, L., Perdrisat, C. F., Piasetzky, E., Punjabi, V. A., Puckett, A. J. R., Qian, X., Qiang, Y., Ransome, R. D., Saha, A., Sarty, A. J., Schulte, E., Solvignon, P., Subudi, R. R., Tang, L., Tedeschi, D., Tvaskis, V., Udias, J. M., Ulmer, P. E., Vignote, J. R., Wesselmann, F. R., Wojteskhowski, B., Zhan, X. |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
Phys.Rev.Lett.105:072001,2010 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.105.072001 |
| Popis: |
Proton recoil polarization was measured in the quasielastic 4He(e,e'p)3H reaction at Q^2 = 0.8 (GeV/c)^2 and 1.3 (GeV/c)^2 with unprecedented precision. The polarization-transfer coefficients are found to differ from those of the 1H(e,e' p) reaction, contradicting a relativistic distorted-wave approximation, and favoring either the inclusion of medium-modified proton form factors predicted by the quark-meson coupling model or a spin-dependent charge-exchange final-state interaction. For the first time, the polarization-transfer ratio is studied as a function of the virtuality of the proton. |
| Databáze: |
arXiv |
| Externí odkaz: |
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