Investigation of the dd → 3Henπ0 reaction with the FZ Julich WASA-at-COSY facility

被引：5

作者：

Adlarson, P. ^{[1
]}

Augustyniak, W. ^{[2
]}

Bardan, W. ^{[3
]}

Bashkanov, M. ^{[4
,5
]}

Bergmann, F. S. ^{[6
]}

Berlowski, M. ^{[7
]}

Bhatt, H. ^{[8
]}

Buescher, M. ^{[9
,10
]}

Calen, H. ^{[1
]}

Ciepal, I. ^{[3
]}

Clement, H. ^{[4
,5
]}

Coderre, D. ^{[9
,10
,11
]}

Czerwinski, E. ^{[3
]}

Demmich, K. ^{[6
]}

Doroshkevich, E. ^{[4
,5
]}

Engels, R. ^{[9
,10
]}

Erven, W. ^{[10
,12
]}

Eyrich, W. ^{[13
]}

Fedorets, P. ^{[9
,10
,14
]}

Foehl, K. ^{[15
]}

Fransson, K. ^{[1
]}

Goldenbaum, F. ^{[9
,10
]}

Goslawski, P. ^{[6
]}

Goswami, A. ^{[16
]}

Grigoryev, K. ^{[9
,10
,17
]}

Gullstrom, C. -O. ^{[1
]}

Hanhart, C. ^{[9
,10
,18
]}

Hauenstein, F. ^{[13
]}

Heijkenskjold, L. ^{[1
]}

Hejny, V. ^{[9
,10
]}

Hinterberger, F. ^{[19
]}

Hodana, M. ^{[3
,9
,10
]}

Hoistad, B. ^{[1
]}

Jany, A. ^{[3
]}

Jany, B. R. ^{[3
]}

Jarczyk, L. ^{[3
]}

Johansson, T. ^{[1
]}

Kamys, B. ^{[3
]}

Kemmerling, G. ^{[10
,12
]}

Khan, F. A. ^{[9
,10
]}

Khoukaz, A. ^{[6
]}

Kirillov, D. A. ^{[20
]}

Kistryn, S. ^{[3
]}

Klaja, J. ^{[3
]}

Kleines, H. ^{[10
,12
]}

Klos, B. ^{[21
]}

Krapp, M. ^{[13
]}

Krzemien, W. ^{[3
]}

Kulessa, P. ^{[22
]}

Kupsc, A. ^{[1
,7
]}

机构：

[1] Uppsala Univ, Dept Phys & Astron, Div Nucl Phys, S-75120 Uppsala, Sweden

[2] Natl Ctr Nucl Res, Dept Nucl Phys, PL-00681 Warsaw, Poland

[3] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

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

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

[6] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[7] Natl Ctr Nucl Res, High Energy Phys Dept, PL-00681 Warsaw, Poland

[8] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India

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

[10] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

[11] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[12] Forschungszentrum Julich, Zentralinst Engn Elekt & Analyt, D-52425 Julich, Germany

[13] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[14] State Sci Ctr Russian Federat, Inst Theoret & Expt Phys, Moscow 117218, Russia

[15] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany

[16] Indian Inst Technol Indore, Dept Phys, Indore 452017, Madhya Pradesh, India

[17] Petersburg Nucl Phys Inst, High Energy Phys Div, Gatchina 188300, Leningrad Distr, Russia

[18] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany

[19] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[20] Joint Inst Nucl Phys, Veksler & Baldin Lab High Energiy Phys, Dubna 141980, Moscow Region, Russia

[21] Univ Silesia, August Chelkowski Inst Phys, PL-40007 Katowice, Poland

[22] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[23] Joint Inst Nucl Phys, Dzhelepov Lab Nucl Problems, Dubna 141980, Moscow Region, Russia

[24] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[25] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[26] Natl Ctr Nucl Res, Dept Cosm Ray Phys, PL-90950 Lodz, Poland

来源：

PHYSICAL REVIEW C | 2013年 / 88卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.88.014004

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：

An exclusive measurement of the dd -> (3)Hen pi(0) reaction was carried out at a beam momentum of p(d) = 1.2 GeV/c using the WASA-at-COSY facility. Information on the total cross section as well as differential distributions was obtained. The data are described by a phenomenological approach based on a combination of a quasifree model and a partial wave expansion for the three-body reaction. The total cross section is found to be sigma(tot) = ( 2.89 +/- 0.01(stat) +/- 0.06(sys) +/- 0.29(norm)) mu b. The contribution of the quasifree processes ( with the beam or target neutron being a spectator) accounts for 38% of the total cross section and dominates the differential distributions in specific regions of phase space. The remaining part of the cross section can be described by a partial wave decomposition indicating the significance of p-wave contributions in the final state.

引用

页数：8

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