Searching for η-mesic Helium with WASA-at-COSY facility

被引：3

作者：

Rundel, Oleksandr ^{[1
]}

Khreptak, Oleksandr ^{[1
]}

Skurzok, Magdalena ^{[1
]}

Krzemien, Wojciech ^{[2
]}

Moskal, Pawel ^{[1
]}

机构：

[1] Jagiellonian Univ, M Smoluchowski Inst Phys, PL-30059 Krakow, Poland

[2] Natl Ctr Nucl Res, PL-05400 Otwock, Swierk, Poland

来源：

MESON 2016 - 14TH INTERNATIONAL WORKSHOP ON MESON PRODUCTION, PROPERTIES AND INTERACTION | 2016年 / 130卷

关键词：

NUCLEI; DD;

D O I：

10.1051/epjconf/201613002008

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 search for the He-4-eta and He-3-eta bound states was performed with the WASA-at-COSY facility using a ramped beam technique in 2008, 2010 and 2014, respectively. The 2008 and 2010 data analyses has already been completed and resulted in the upper limits for the total cross sections for the eta-mesic He-4 production in dd -> (3)Hen pi(0) and dd -> (3)Hep pi(-) processes. No narrow structure which could be interpreted as a bound state was observed. The experiment carried out in 2014 collected the largest data sample for He-3-eta in the world. The data analysis is in progress. This article presents results of the 2010 data analysis and preliminary results of the 2014 data analysis.

引用

页数：3

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