Differential cross section and analysing power of the quasi-free pn → {pp}sπ- reaction at 353 MeV

被引：13

作者：

Dymov, S. ^{[2
,3
]}

Azaryan, T. ^{[3
]}

Barsov, S. ^{[4
]}

Baru, V. ^{[5
,6
]}

Benati, P. ^{[7
,8
]}

Bertelli, S. ^{[7
,8
]}

Chiladze, D. ^{[9
]}

Dzyuba, A. ^{[4
]}

Gebel, R. ^{[9
]}

Goslawski, P. ^{[10
]}

Guidoboni, G. ^{[7
,8
]}

Hanhart, C. ^{[9
]}

Hartmann, M. ^{[9
]}

Kacharava, A. ^{[9
]}

Khoukaz, A. ^{[10
]}

Komarov, V. ^{[3
]}

Kulessa, P. ^{[11
]}

Kulikov, A. ^{[3
]}

Kurbatov, V. ^{[3
]}

Lenisa, P. ^{[7
,8
]}

Lensky, V. ^{[6
,12
]}

Lomidze, N. ^{[13
]}

Lorentz, B. ^{[9
]}

Macharashvili, G. ^{[3
,13
]}

Mielke, M. ^{[10
]}

Mikirtytchiants, S. ^{[4
]}

Merzliakov, S. ^{[3
,9
]}

Ohm, H. ^{[9
]}

Papenbrock, M. ^{[10
]}

Rathmann, F. ^{[9
]}

Serdyuk, V. ^{[3
,9
]}

Shmakova, V. ^{[3
]}

Stroeher, H. ^{[9
]}

Tabidze, M. ^{[13
]}

Tsirkov, D. ^{[3
]}

Trusov, S. ^{[14
]}

Uzikov, Yu. ^{[3
]}

Valdau, Yu. ^{[4
,9
]}

Wilkin, C. ^{[1
]}

机构：

[1] UCL, Dept Phys & Astron, London WC1E 6BT, England

[2] Univ Erlangen Nurnberg, Inst Phys 2, D-91058 Erlangen, Germany

[3] Joint Inst Nucl Res, Lab Nucl Problems, RU-141980 Dubna, Russia

[4] St Petersburg Nucl Phys Inst, RU-188350 Gatchina, Russia

[5] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany

[6] Inst Theoret & Expt Phys, RU-117218 Moscow, Russia

[7] Univ Ferrara, IT-44100 Ferrara, Italy

[8] INFN, IT-44100 Ferrara, Italy

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

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

[11] Inst Nucl Phys, PL-31342 Krakow, Poland

[12] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[13] Tbilisi State Univ, Inst High Energy Phys, GE-0186 Tbilisi, Georgia

[14] Forschungszentrum Rossendorf, Inst Kern & Hadronenphys, D-01314 Dresden, Germany

来源：

PHYSICS LETTERS B | 2012年 / 712卷 / 4-5期

关键词：

Negative pion production; Neutron-proton collisions; Amplitude analysis; TELESCOPE;

D O I：

10.1016/j.physletb.2012.05.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In order to test chiral perturbation theory and establish links between p-wave pion production in nucleon-nucleon collisions and low energy three-nucleon scattering, an extensive programme of experiments on pion production is currently underway at COSY-ANKE. The final proton pair is measured at very low excitation energy, leading to an S-wave diproton, denoted here as {ppl}(s). By using a deuterium target we have obtained data on the differential cross section and analysing power of the quasi-free (p) over barn -> {pp}(s)pi(-) reaction at 353 MeV. The spectator proton p(sp) was either measured directly in silicon tracking telescopes or reconstructed using the momentum of a detected pi(-). Both observables can be described in terms of s-, p-, and d-wave pion production amplitudes. Taken together with the analogous data on the (p) over barp -> {pp}(s)pi(0) reaction, full partial wave decompositions of both processes were carried out. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：375 / 380

页数：6

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