The high intensity and high energy antiproton beams which will be produced at FAIR open the possibility to determine time-like electromagnetic form factors in a wide kinematical range,through the annihilation reaction: p+(p-)→e++e-.The status of the proposed experiment as well as the expected results are presented on the basis of realistic simulations.The impact of these measurements on the understanding of the nucleon structure,of the asymptotic properties of form factors and of the reaction mechanism are discussed using model independent statements based on symmetry properties of the strong and electromagnetic interactions in connection with space-like data.
参考文献
| [1] | The (P-)ANDA collaboration.Physics Performance Report for (P-)ANDA:Strong Interaction Studies with Antiprotons[OL].http://www.gsi.de/PANDA;http://www.gsi.de/FAIR |
| [2] | Hofstadter R .[J].Reviews of Modern Physics,1956,28:214-254. |
| [3] | Rosenbluth M N .[J].Physical Review,1950,79:615-619. |
| [4] | Akhiezer A I;Rekalo M P .[J].Soviet Mathematics Doklady,1968,13:572-574. |
| [5] | [J].Dokl Akad Nauk Ser Fiz,1968,180:1081-1083. |
| [6] | [J].Soviet Journal of Particles and Nuclei,1974,4:277-303. |
| [7] | [J].Fiz Elem Chast Atom Yadra,1973,4:662-688. |
| [8] | Perdrisat C F;Punjabi V;Vanderhaeghen M .[J].Progress in Particle and Nuclear Physics,2007,59:694-764. |
| [9] | Sudol M et al.[Z]. |
| [10] | Zichichi A et al.[J].Nuovo Cimento,1962,24:170-180. |
| [11] | Bilenky S M;Giunti C;Wataghin V Z .[J].Physica C,1993,59:475-480. |
| [12] | Tomasi-Gustafsson E et al.[J].European Physical Journal A:Mathematical and General,2005,24:419-430. |
| [13] | Tomasi-Gustafsson E.;Rekalo MP. .Search for evidence of asymptotic regime of nucleon electromagnetic form factors from a compared analysis in space- and time-like regions[J].Physics Letters, B. Nuclear Physics and High Energy Physics,2001(4):291-295. |
| [14] | Bardin G et al.[J].Nuclear Physics B,1994,411:3-32. |
| [15] | Aubert B et al.BABAR collaboration[J].Physical Review D,2006,73:012005. |
| [16] | Tomasi-Gustafsson E;Gakh GI .Asymptotic behavior of nucleon electromagnetic form factors in time-like region[J].The European Physical Journal, A. Hadrons and Nuclei,2005(2):285-291. |
| [17] | Rekalo MP;Tomasi-Custafsson E .Model-independent properties of two-photon exchange in elastic electron-proton scattering[J].The European Physical Journal, A. Hadrons and Nuclei,2004(2):331-336. |
| [18] | [J].Nuclear Physics A,2004,740:271-286. |
| [19] | [J].Nuclear Physics A,2004,742:322-334. |
| [20] | Gakh GI;Tomasi-Gustafsson E .General analysis of polarization phenomena in e(+)+e(-)-> N+(N)over-bar for axial parametrization of two-photon exchange[J].Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions,2006(0):169-183. |
| [21] | Gakh GI;Tomasi-Gustafsson E .Polarization effects in the reaction (p)over-bar+p -> e(+)+e(-) in the presence of two-photon exchange[J].Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions,2005(1/2):120-131. |
| [22] | Tomasi-Gustafsson E et al.[J].Physics Letters B,2008,659:197-200. |
| [23] | Bystritskiy Yu M;Kuraev E A;Tomasi-Gustafsson E .[J].Physical Review C,2007,75:015207. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%