Exclusive measurement of the pp → nnπ+π+ reaction at 1.1 GeV

被引：25

作者：

Skorodko, T. ^{[1
,2
]}

Bashkanov, M.

Bogoslawsky, D. ^{[3
]}

Calen, H. ^{[4
]}

Clement, H. ^{[2
]}

Doroshkevich, E. ^{[1
,2
]}

Demiroers, L. ^{[5
]}

Ekstrom, C. ^{[4
]}

Fransson, K.

Gustafsson, L. ^{[6
]}

Hoistad, B. ^{[6
]}

Ivanov, G. ^{[3
]}

Jacewicz, M. ^{[6
]}

Jiganov, E.

Johansson, T. ^{[6
]}

Khakimova, O. ^{[1
]}

Keleta, S. ^{[6
]}

Koch, I. ^{[6
]}

Kren, F. ^{[1
]}

Kullander, S. ^{[6
]}

Kupsc, A. ^{[6
]}

Marciniewski, P. ^{[4
]}

Meier, R. ^{[1
]}

Morosov, B.

Pauly, C. ^{[7
]}

Petren, H. ^{[6
]}

Petukhov, Y. ^{[3
]}

Povtorejko, A. ^{[3
]}

Ruber, R. J. M. Y. ^{[4
]}

Schonning, K. ^{[6
]}

Scobel, W.

Shwartz, B. ^{[8
]}

Stepaniak, J. ^{[9
,10
]}

Thorngren-Engblom, P. ^{[9
,10
]}

Tikhomirov, V. ^{[3
]}

Wagner, G. J. ^{[1
,2
]}

Wolke, M. ^{[6
]}

Yamamoto, A. ^{[11
]}

Zabierowski, J. ^{[9
,10
]}

Zlomanczuk, J. ^{[6
]}

机构：

[1] Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany

[2] Univ Tubingen, Kepler Ctr Astro & Particle Phys, D-72076 Tubingen, Germany

[3] Joint Inst Nucl Res, Dubna 141980, Russia

[4] Uppsala Univ, Svedberg Lab, S-75121 Uppsala, Sweden

[5] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[6] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden

[7] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany

[8] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[9] Andrzej Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

[10] Andrzej Soltan Inst Nucl Studies, PL-90950 Lodz, Poland

[11] Stockholm Univ, Dept Phys, S-10691 Stockholm, Sweden

来源：

EUROPEAN PHYSICAL JOURNAL A | 2011年 / 47卷 / 09期

关键词：

PION-PRODUCTION; CROSS-SECTIONS; COLLISIONS; EXCITATION;

D O I：

10.1140/epja/i2011-11108-2

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：

First exclusive data for the pp -> nnp(+)pi(+) reaction have been obtained at CELSIUS with the WASA detector setup at a beam energy of T-p - 1.1 GeV. Total and differential cross-sections disagree with theoretical calculations, which predict the Delta Delta excitation to be the dominant process at this beam energy. Instead, the data require the excitation of one of the nucleons to a higher-lying Delta state, preferably the Delta(1600)P-33, to be the leading process.

引用

页数：6

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