RELATIVISTIC MESON-EXCHANGE CURRENTS IN THE DIP REGION

被引：36

作者：

DEKKER, MJ

BRUSSAARD, PJ

TJON, JA

机构：

[1] UNIV WASHINGTON,INST NUCL THEORY,SEATTLE,WA 98195

[2] STATE UNIV UTRECHT,INST THEORET PHYS,3508 TA UTRECHT,NETHERLANDS

来源：

PHYSICS LETTERS B | 1991年 / 266卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)91034-S

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that a relativistic treatment of meson exchange currents for inclusive electron scattering off a nucleus treated as a free Fermi gas leads to a strong enhancement of the transverse response function in the dip region in the two-particle knockout channel, mainly through the intermediate DELTA-excitation. This suggests that the missing strength in the dip region can, at least partially, be accounted for by a relativistic treatment of the DELTA-excitation and its coupling to the two-nucleon system. Recoil effects are found to be sizeable over the whole range of energy transfer including the quasi-elastic peak.

引用

页码：249 / 254

页数：6

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