Momentum Dependence of the Nuclear Isovector Spin Responses from (p
Momentum Dependence of the Nuclear Isovector Spin Responses from (p
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核等矢量自旋响应的动量依赖性 (p
DOI：
10.1103/physrevlett.73.3516
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发表时间：
1994
影响因子：
8.6
通讯作者：
Kawahigashi
中科院分区：
文献类型：
--
作者：
Taddeucci;Luther;Rybarcyk;Byrd;Mcclelland;Prout;Delucia;Cooper;Marchlenski;Sugarbaker;Park;Sams;Goodman;Rapaport;Ichimura;Kawahigashi
在494 MeV和散射角分别为12.5、18和27 （q= 1.2, 1）时，测量了h2、c12和ca40准自由（p→，n→）散射的完整极化传递系数。7, 2.5 fm−1)。这些测量结果分离出横向（σ× q）和纵向（σ·q）等矢量自旋响应。分离后的响应与计算和电子散射响应的比较表明，自旋横向通道有很强的增强。这种过剩的横向强度掩盖了响应比中介子相关的影响。
Complete sets of polarization transfer coefficients have been measured for quasifree (p→, n→) scattering from H 2, C 12, and Ca 40 at 494 MeV and scattering angles of 12.5, 18, and 27 (q= 1.2, 1. 7, 2.5 fm− 1). These measurements yield separated transverse (σ× q) and longitudinal (σ· q) isovector spin responses. Comparison of the separated responses to calculations and to electron-scattering responses reveals a strong enhancement in the spin transverse channel. This excess transverse strength masks the effect of pionic correlations in the response ratio.