Sub-threshold production of Ks0 mesons and Λ hyperons in Au plus Au collisions at √sNN=2.4 GeV

被引：26

作者：

Adamczewski-Musch, J. ^{[4
]}

Arnold, O. ^{[9
,10
]}

Behnke, C. ^{[8
]}

Belounnas, A. ^{[16
]}

Belyaev, A. ^{[7
]}

Berger-Chen, J. C. ^{[9
,10
]}

Biernat, J. ^{[3
]}

Blanco, A. ^{[2
]}

Blume, C. ^{[8
]}

Bohmer, M. ^{[10
]}

Boerdalo, R. ^{[2
]}

Chernenko, S. ^{[7
]}

Chlad, L. ^{[17
]}

Deveaux, C. ^{[11
]}

Dreyer, J. ^{[6
]}

Dybczak, A. ^{[3
]}

Epple, E. ^{[9
,10
]}

Fabbietti, L. ^{[9
,10
]}

Fateev, O. ^{[7
]}

Filip, P. ^{[1
]}

Fonte, R. ^{[2
,21
]}

Franco, C. ^{[2
]}

Friese, J. ^{[10
]}

Froehlich, I ^{[8
]}

Galatyuk, T. ^{[4
,5
]}

Garzon, J. A. ^{[18
]}

Gernhaeuser, R. ^{[10
]}

Golubeva, M. ^{[12
]}

Greifenhagen, R. ^{[6
,22
]}

Guber, F. ^{[12
]}

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

Harabasz, S. ^{[3
,5
]}

Heinz, T. ^{[4
]}

Hennino, T. ^{[16
]}

Hlavac, S. ^{[1
]}

Hoehne, C. ^{[4
,11
]}

Holzmann, R. ^{[4
]}

Ierusalimov, A. ^{[7
]}

Ivashkin, A. ^{[12
]}

Kaempfer, B. ^{[6
,22
]}

Karavicheva, T. ^{[12
]}

Kardan, B. ^{[8
]}

Koenig, I ^{[4
]}

Koenig, W. ^{[4
]}

Kolb, B. W. ^{[4
]}

Korcyl, G. ^{[3
]}

Kamakov, G. ^{[5
]}

Kotte, R. ^{[6
]}

Kugler, A. ^{[17
]}

Kunz, T. ^{[10
]}

机构：

[1] Slovak Acad Sci, Inst Phys, Bratislava 84228, Slovakia

[2] Lip Lab Instrumentactio & Fis Expt Particulas, P-3004516 Coimbra, Portugal

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

[4] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

[5] Tech Univ Darmstadt, D-64289 Darmstadt, Germany

[6] Helmholtz Zentrum Dresden Rossendorf, Inst Strahlenphys, D-01314 Dresden, Germany

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

[8] Goethe Univ, Inst Kernphys, D-60438 Frankfurt, Germany

[9] Excellence Cluster Origin & Struct Universe, D-85748 Garching, Germany

[10] Tech Univ Munich, Phys Dept E62, D-85748 Garching, Germany

[11] Justus Liebig Univ Giessen, Phys Inst 2, D-35392 Giessen, Germany

[12] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[13] Inst Theoret & Expt Phys, Moscow 117218, Russia

[14] Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Moscow 115409, Russia

[15] Univ Cyprus, Dept Phys, CY-1678 Nicosia, Cyprus

[16] Univ Paris Saclay, Univ Paris Sud, CNRS IN2P3, Inst Phys Nucl, F-91406 Orsay, France

[17] Czech Acad Sci, Nucl Phys Inst, Rez 25068, Czech Republic

[18] Univ Santiago de Compostela, LabCAF F Fis, Santiago De Compostela 15706, Spain

[19] Univ Torino, Dipartimento Fis, I-10125 Turin, Italy

[20] Univ Torino, INFN, I-10125 Turin, Italy

[21] Coimbra Polytech ISEC, Coimbra, Portugal

[22] Tech Univ Dresden, D-01062 Dresden, Germany

[23] Frederick Univ, CY-1036 Nicosia, Cyprus

来源：

PHYSICS LETTERS B | 2019年 / 793卷

关键词：

NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; EQUATION-OF-STATE; PB-PB COLLISIONS; KAON PRODUCTION; MID-RAPIDITY; STRANGE; ENHANCEMENT; MATTER;

D O I：

10.1016/j.physletb.2019.03.065

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present first data on sub-threshold production of K-s(0) mesons and Lambda hyperons in Au+Au collisions at root s(NN) = 2.4 GeV. We observe an universal < A(part)> scaling of hadrons containing strangeness, independent of their corresponding production thresholds. Comparing the yields, their < A(part)> scaling, and the shapes of the rapidity and the p(t) spectra to state-of-the-art transport model (UrQMD, HSD, IQMD) predictions, we find that none of them can simultaneously describe these observables with reasonable chi(2) values. (C) 2019 The Authors. Published by Elsevier B.V.

引用

页码：457 / 463

页数：7

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