PHOTOPRODUCTION OF MESONS OFF LIGHT NUCLEI - THE SEARCH FOR η-MESIC NUCLEI

被引：0
|
作者：
Krusche, B. [1 ]
Pheron, F. [1 ]
Magrbhi, Y. [1 ]
机构：
[1] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland
来源：
ACTA PHYSICA POLONICA B | 2010年 / 41卷 / 10期
关键词：
NEAR-THRESHOLD PHOTOPRODUCTION; EXCLUSIVE MEASUREMENT; PHOTON SPECTROMETER; BEAM ASYMMETRY; BOUND-STATES; QUASI-FREE; PROTON; MICROTRON; DEUTERON; PI(-);
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Photoproduction of eta mesons off light nuclei (d, (3)He, (7)Li) has been measured at the tagged photon beam of the Mainz MAMI accelerator with the combined Crystal Ball/TAPS detection system. Special attention was given to the threshold behavior of the reactions in view of possible indications for the formation of (quasi-) bound eta-nucleus states, so-called eta-mesic nuclei. A very strong threshold enhancement of coherent eta photoproduction off (3)He was found and coherent eta photoproduction off (7)Li was observed for the first time. Preliminary results will be discussed.
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页码：2249 / 2259
页数：11
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