在Q2 = 1.5 GeV2时，反冲动量高达1 GeV/c的准弹性3He(e,e'p)2H反应。
Quasielastic 3He(e,e'p)2H reaction at Q2 = 1.5 GeV2 for recoil momenta up to 1 GeV/c.
作者信息
Rvachev M M, Benmokhtar F, Penel-Nottaris E, Aniol K A, Bertozzi W, Boeglin W U, Butaru F, Calarco J R, Chai Z, Chang C C, Chen J-P, Chudakov E, Cisbani E, Cochran A, Cornejo J, Dieterich S, Djawotho P, Duran W, Epstein M B, Finn J M, Fissum K G, Frahi-Amroun A, Frullani S, Furget C, Garibaldi F, Gayou O, Gilad S, Gilman R, Glashausser C, Hansen J-O, Higinbotham D W, Hotta A, Hu B, Iodice M, Iomni R, de Jager C W, Jiang X, Jones M K, Kelly J J, Kox S, Kuss M, Laget J M, De Leo R, Lerose J J, Liatard E, Lindgren R, Liyanage N, Lourie R W, Malov S, Margaziotis D J, Markowitz P, Merchez F, Michaels R, Mitchell J, Mougey J, Perdrisat C F, Punjabi V A, Quéméner G, Ransome R D, Réal J-S, Roché R, Sabatié F, Saha A, Simon D, Strauch S, Suleiman R, Tamae T, Templon J A, Tieulent R, Ueno H, Ulmer P E, Urciuoli G M, Voutier E, Wijesooriya K, Wojtsekhowski B
机构信息
Massachusetts Institute of Technology, Cambridge, 02139, USA.
出版信息
Phys Rev Lett. 2005 May 20;94(19):192302. doi: 10.1103/PhysRevLett.94.192302.
We have studied the quasielastic 3He(e,e(')p)2H reaction in perpendicular coplanar kinematics, with the energy and the momentum transferred by the electron fixed at 840 MeV and 1502 MeV/c, respectively. The 3He(e,e(')p)2H cross section was measured for missing momenta up to 1000 MeV/c, while the A(TL) asymmetry was extracted for missing momenta up to 660 MeV/c. For missing momenta up to 150 MeV/c, the cross section is described by variational calculations using modern 3He wave functions. For missing momenta from 150 to 750 MeV/c, strong final-state interaction effects are observed. Near 1000 MeV/c, the experimental cross section is more than an order of magnitude larger than predicted by available theories. The A(TL) asymmetry displays characteristic features of broken factorization with a structure that is similar to that generated by available models.
我们研究了在垂直共面运动学中的准弹性3He(e,e(')p)2H反应，电子传递的能量和动量分别固定在840 MeV和1502 MeV/c。测量了3He(e,e(')p)2H截面，其缺失动量高达1000 MeV/c，同时提取了缺失动量高达660 MeV/c时的A(TL)不对称性。对于缺失动量高达150 MeV/c的情况，截面由使用现代3He波函数的变分计算来描述。对于缺失动量在150至750 MeV/c之间的情况，观察到了强烈的末态相互作用效应。在接近1000 MeV/c时，实验截面比现有理论预测的大一个多数量级。A(TL)不对称性显示出因子分解破坏的特征，其结构与现有模型产生的结构相似。
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