Search for narrow dibaryon resonances in neutral pion photoproduction from the deuteron

被引：11
|
作者：
Siodlaczek, U
Achenbach, P
Ahrens, J
Arends, HJ
Beck, R
Bilger, R
Clement, H
Hejny, V
Kellie, JD
Kotulla, M
Krusche, B
Kuhr, V
Leukel, R
McGeorge, JC
Metag, V
Novotny, R
de León, VO
Rambo, F
Schepkin, M
Schmidt, A
Ströher, H
Wagner, GJ
Walcher, T
Weiss, J
Wissmann, F
Wolf, M
机构：
[1] Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany
[2] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany
[3] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany
[4] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany
[5] Univ Gottingen, Inst Phys 2, D-37073 Gottingen, Germany
[6] Inst Theoret & Expt Phys, Moscow 117218, Russia
[7] Univ Basel, Inst Phys & Astron, CH-4056 Basel, Switzerland
[8] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
来源：
EUROPEAN PHYSICAL JOURNAL A | 2000年 / 9卷 / 03期
关键词：
D O I：
10.1007/s100500070015
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The reaction gammad --> pi X-0 has been measured with TAPS at MAMI in the energy range E-gamma = 140-300 MeV. Using the Glasgow tagging spectrometer a photon energy resolution of 0.8 MeV was achieved. The energy excitation functions of integral and differential total cross-sections show no structures of statistical significance > 2 sigma. Upper limits for the production of narrow isoscalar or isovector dibaryons with masses m less than or equal to 2100 MeV/c(2) were deduced. They are in the range 2-5 mub averaged over the 0.8 MeV energy resolution.
引用
收藏
页码：309 / 311
页数：3
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