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

页码：309 / 311

页数：3

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