Strange meson production in Al plus Al collisions at 1.9 AGeV

被引:15
作者
Gasik, P. [1 ,2 ,3 ]
Piasecki, K. [1 ]
Herrmann, N. [4 ]
Leifels, Y. [5 ]
Matulewicz, T. [1 ]
Andronic, A. [5 ]
Averbeck, R. [5 ]
Barret, V. [6 ,7 ]
Basrak, Z. [8 ]
Bastid, N. [6 ,7 ]
Benabderrahmane, M. L. [4 ]
Berger, M. [3 ]
Buehler, P. [9 ]
Cargnelli, M. [9 ]
Caplar, R. [8 ]
Crochet, P. [6 ,7 ]
Czerwiakowa, O. [1 ]
Deppner, I. [4 ]
Dupieux, P. [6 ,7 ]
Dzelalija, M. [10 ]
Fabbietti, L. [2 ,3 ]
Fodor, Z. [11 ]
Gasparic, I. [8 ]
Grishkin, Y. [12 ]
Hartmann, O. N. [5 ]
Hildenbrand, K. D. [5 ]
Hong, B. [13 ]
Kang, T. I. [5 ,13 ]
Kecskemeti, J. [11 ]
Kim, Y. J. [5 ]
Kirejczyk, M. [1 ,14 ]
Kis, M. [5 ,8 ]
Koczon, P. [5 ]
Kotte, R. [15 ]
Lebedev, A. [12 ]
Le Fevre, A. [5 ]
Liu, J. L. [16 ]
Lopez, X. [6 ,7 ]
Manko, V. [17 ]
Marton, J. [9 ]
Muenzer, R. [2 ,3 ]
Petrovici, M. [18 ]
Rami, F. [19 ,20 ]
Reischl, A. [4 ]
Reisdorf, W. [5 ]
Ryu, M. S. [13 ]
Schmidt, P. [9 ]
Schuettauf, A. [5 ]
Seres, Z. [11 ]
Sikora, B. [1 ]
机构
[1] Univ Warsaw, Fac Phys, Inst Expt Phys, Warsaw, Poland
[2] Excellence Cluster Origin & Struct Universe, Garching, Germany
[3] Tech Univ Munich, Phys Dept E62, Garching, Germany
[4] Heidelberg Univ, Inst Phys, Heidelberg, Germany
[5] GSI Helmholtzzentrum Schwerionenforsch GmbH, Darmstadt, Germany
[6] CNRS, IN2P3, Lab Phys Corpusculaire, Clermont Ferrand, France
[7] Univ Clermont Ferrand, Clermont Ferrand, France
[8] Rudjer Boskovic Inst, Zagreb, Croatia
[9] Austrian Acad Sci, Stefan Meyer Inst Subatomare Phys, Vienna, Austria
[10] Univ Split, Split, Croatia
[11] RMKI, Wigner RCP, Budapest, Hungary
[12] Inst Theoret & Expt Phys, Moscow, Russia
[13] Korea Univ, Seoul, South Korea
[14] Natl Ctr Nucl Res, Otwock, Poland
[15] Helmholtz Zentrum Dresden Rossendorf, Inst Strahlenphys, Dresden, Germany
[16] Harbin Inst Technol, Harbin, Peoples R China
[17] Natl Res Ctr Kurchatov Inst, Moscow, Russia
[18] Inst Nucl Phys & Engn, Bucharest, Romania
[19] Inst Pluridisciplinaire Hubert Curien, Strasbourg, France
[20] Univ Strasbourg, Strasbourg, France
[21] Tsinghua Univ, Dept Phys, Beijing, Peoples R China
[22] Chinese Acad Sci, Inst Modern Phys, Lanzhou, Peoples R China
关键词
HEAVY-ION COLLISIONS; SIS ENERGIES; ANTIKAON PRODUCTION; KAON PRODUCTION; DETECTOR; MATTER; FOPI;
D O I
10.1140/epja/i2016-16177-y
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 production of K+, K- and phi(1020) mesons is studied in Al+Al collisions at a beam energy of 1.9 A GeV which is close to or below the production threshold in NN reactions. Inverse slopes, anisotropy parameters, and total emission yields of K-+/- mesons are obtained. A comparison of the ratio of kinetic energy distributions of K- and K+ mesons to the HSD transport model calculations suggests that the inclusion of the in-medium modifications of kaon properties is necessary to reproduce the ratio. The inverse slope and total yield of phi mesons are deduced. The contribution to K- production from phi meson decays is found to be [17 +/- 3(stat)(-7)(+2) (syst)]%. The results are in line with the previous K-+/- and phi data obtained for different colliding systems at similar incident beam energies.
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页数:13
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