Near threshold photoproduction of eta-mesons from complex nuclei

被引：109

作者：

RobigLandau, M

Ahrens, J

Anton, G

Averbeck, R

Beck, R

Fuchs, M

Gabler, AR

Harter, F

Harty, PD

Hejny, V

Krusche, B

MacGregor, IJD

McGeorge, JC

Metag, V

Novotny, R

Peise, J

Schubert, A

Simon, RS

Stroher, H

机构：

[1] UNIV MAINZ,INST KERNPHYS,D-55099 MAINZ,GERMANY

[2] UNIV GLASGOW,DEPT PHYS & ASTRON,GLASGOW G12 8QQ,LANARK,SCOTLAND

[3] UNIV BONN,INST PHYS,D-53115 BONN,GERMANY

[4] GESELL SCHWERIONENFORSCH MBH,D-64220 DARMSTADT,GERMANY

来源：

PHYSICS LETTERS B | 1996年 / 373卷 / 1-3期

关键词：

D O I：

10.1016/0370-2693(96)00125-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Total and differential cross sections for photoproduction of eta mesons from C-12, Ca-40, Nb-93 and Pb-nat have been obtained up to 790 MeV incident photon energy at the Mainz Microtron (MAMI) with the TAPS spectrometer. The absorption cross section sigma(eta N)(abs) = (30 +/- 2.5 +/- 6) mb of eta mesons in nuclear matter and the absorption length lambda(eta) = (2.0 +/- 0.2 +/- 0.4) fm are extracted. No significant depletion of the S(1)1(1535) strength in the eta photoproduction on nuclei is observed.

引用

页码：45 / 50

页数：6

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