Hypernuclear production cross section in the reaction of 6Li + 12C at 2 A GeV

Autor: C. Caesar, F. E. Maas, Hitoshi Tamura, S. Bianchin, T. Takahashi, Eunji Kim, M. Kavatsyuk, L. Nungesser, S. Minami, G. Ickert, C. Ayerbe Gayoso, C.J. Schmidt, O. Bertini, M. Sekimoto, D. Nakajima, D. Khaneft, C. Rappold, G.J. Tambave, Z.S. Ketenci, C. J. Yoon, W. Trautmann, J. Hoffmann, Patrick Achenbach, S. Voltz, J. Pochodzalla, V. Bozkurt, N. Kurz, Y. Ma, S. Erturk, B. Göküzüm, T. Saito, E. Guliev, K. Yoshida, A. Le Fèvre, Thomas Aumann, H. C. Bhang, S. K. Kim, K. Koch, Min-Hye Kim, W. Ott, H. Simon, Tomokazu Fukuda, B. Özel-Tashenov, S. Ajimura, Atsushi Sakaguchi, Yutaka Mizoi
Přispěvatelé: Mizoi, Yutaka -- 0000-0002-4749-0815, Ayerbe Gayoso, Carlos -- 0000-0001-8640-5380, Caesar, Christoph -- 0000-0001-5844-7073, Achenbach, Patrick -- 0000-0002-6754-653X, Rappold, Christophe -- 0000-0002-5390-5052, [Rappold, C. -- Saito, T. R. -- Bertini, O. -- Bianchin, S. -- Bozkurt, V. -- Kim, E. -- Ma, Y. -- Maas, F. -- Minami, S. -- Nakajima, D. -- Ozel-Tashenov, B. -- Yoshida, K. -- Aumann, T. -- Caesar, C. -- Goekuezuem, B. -- Hoffmann, J. -- Ickert, G. -- Khaneft, D. -- Koch, K. -- Kurz, N. -- Le Fevre, A. -- Ott, W. -- Schmidt, C. J. -- Simon, H. -- Trautmann, W. -- Voltz, S.] GSI Helmholtz Ctr Heavy Ion Res, D-64291 Darmstadt, Germany -- [Rappold, C.] Univ Giessen, D-35392 Giessen, Germany -- [Saito, T. R. -- Bertini, O. -- Ma, Y. -- Maas, F. -- Achenbach, P. -- Gayoso, C. Ayerbe -- Khaneft, D. -- Nungesser, L. -- Pochodzalla, J.] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany -- [Saito, T. R. -- Maas, F. -- Yoshida, K. -- Pochodzalla, J.] Helmholtz Inst Mainz, D-55099 Mainz, Germany -- [Saito, T. R.] Iwate Univ, Morioka, Iwate 0208550, Japan -- [Bozkurt, V. -- Erturk, S. -- Goekuezuem, B. -- Ketenci, Z. S.] Nigde Univ, TR-51100 Nigde, Turkey -- [Kim, E. -- Bhang, H. C. -- Kim, M. -- Kim, S. -- Yoon, C. J.] Seoul Natl Univ, Seoul 151747, South Korea -- [Kavatsyuk, M. -- Guliev, E. -- Tambave, G. J.] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands -- [Nakajima, D.] Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan -- [Yoshida, K. -- Sakaguchi, A.] Osaka Univ, Toyonaka, Osaka 5600043, Japan -- [Ajimura, S.] Nucl Phys Res Ctr, Ibaraki, Osaka 5670047, Japan -- [Aumann, T. -- Caesar, C.] Tech Univ Darmstadt, D-64289 Darmstadt, Germany -- [Le Fevre, A.] SUBATECH, F-44307 Nantes, France -- [Fukuda, T.] Osaka Electrocommun Univ, Neyagawa, Osaka 5728530, Japan -- [Sekimoto, M. -- Takahashi, T.] KEK, Tsukuba, Ibaraki 3050801, Japan -- [Tamura, H.] Tohoku Univ, Aoba Ku, Sendai, Miyagi 9807875, Japan, Research unit Nuclear & Hadron Physics, 0-Belirlenecek
Jazyk: angličtina
Předmět:
Zdroj: Physics Letters B, Vol 747, Iss C, Pp 129-134 (2015)
Physics Letters B, 747, 129-134. ELSEVIER SCIENCE BV
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2015.05.059
Popis: WOS: 000358624800021
Hypernuclear production cross sections have been deduced for the first time with induced reaction of heavy ion beam on fixed target and by means of the invariant mass method by the HypHI Collaboration exploiting the reaction of Li-6 C-12 at 2 A GeV or root S-NN = 2.70 GeV. A production cross section of 3.9 +/- 1.4 mu b for H-3(Lambda) and of 3.1 +/- 1.0 mu b for H-4(Lambda) respectively in the projectile rapidity region was inferred as well as the total production cross section of the Lambda hyperon was measured and found to be equal to 1.7 +/- 0.8 mb. A global fit based on a Bayesian approach was performed in order to include and propagate statistical and systematic uncertainties. Production ratios of H-3(Lambda)/H-4(Lambda), H-3(Lambda)/Lambda and H-4(Lambda)/Lambda were included in the inference procedure. The strangeness population fattors S-3 and S-4 of H-3(Lambda) and H-4(Lambda) respectively were extracted. In addition, the multiplicities of the Lambda hyperon, H-3(Lambda), and H-4(Lambda) together with the rapidity and transversal momentum density distributions of the observed hypemuclei were extracted and reported. (C) 2015 The Authors. Published by Elsevier B.V.
Helmholtz Association as Helmholtz-University Young Investigators Group at GSI [VH-NG-239]; German Research Foundation (DFG) [SA 1696/1-1]; Ministry of Education, Science and Culture of Japan [449, 18042008]; EU; GSI Department of Accelerator; GSI Department of Experimental Electronics; GSI Department of the Detector Laboratory; GSI Department of the Target Laboratory; Electronics Department of the Institute for Nuclear Physics of Mainz University
The authors would like to thank the GSI Departments of Accelerator, of Experimental Electronics, of the Detector Laboratory and of the Target Laboratory and the Electronics Department of the Institute for Nuclear Physics of Mainz University for supporting the project. The HypHI project is funded by the Helmholtz Association as Helmholtz-University Young Investigators Group VH-NG-239 at GSI, and the German Research Foundation (DFG) under contract number SA 1696/1-1. The authors acknowledge the financial support provided by the Ministry of Education, Science and Culture of Japan, Grant-in-Aid for Scientific Research on Priority Areas 449, and Grant-in-Aid for promotion of Cooperative Research in Osaka Electro-Communication University (2004-2006). This work is also supported by the Ministry of Education, Science and Culture of Japan, Grants-in-Aid for Scientific Research 18042008 and EU FP7 Hadron-Physics-2 SPHERE. A part of this work was carried out on the HIMSTER high performance computing infrastructure provided by the Helmholtz-Institute Mainz. We would also like to thank to A. Botvina, T. Gaitanos, and H. Lenske for the involved discussions.
Databáze: OpenAIRE
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