Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV

X. Lopez, Y. J. Kim, N. Herrmann, A. Andronic, V. Barret, Z. Basrak, N. Bastid, M. L. Benabderrahmane, R. Čaplar, E. Cordier, P. Crochet, P. Dupieux, M. Dželalija, Z. Fodor, I. Gašparić, Y. Grishkin, O. N. Hartmann, K. D. Hildenbrand, Byungsik Hong, T. I. Kang & 33 others J. Kecskemeti, M. Kirejczyk, M. Kiš, P. Koczon, M. Korolija, R. Kotte, A. Lebedev, Y. Leifels, M. Merschmeyer, W. Neubert, D. Pelte, M. Petrovici, F. Rami, W. Reisdorf, M. S. Ryu, A. Schüttauf, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, G. Stoicea, Z. Tyminski, P. Wagner, K. Wiśniewski, D. Wohlfarth, Z. G. Xiao, I. Yushmanov, X. Y. Zhang, A. Zhilin, G. Ferini, T. Gaitanos

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Abstract

Results on K+ and K0 meson production in 4496Ru + 4496Ru and 4096Zr + 4096Zr collisions at a beam kinetic energy of 1.528A GeV, measured with the FOPI detector at GSI-Darmstadt, are investigated as a possible probe of isospin effects in high-density nuclear matter. The measured double ratio (K+/K0)Ru/(K+/K0)Zr is compared to the predictions of a thermal model and a relativistic mean field transport model using two different collision scenarios and under different assumptions on the stiffness of the symmetry energy. We find good agreement with the thermal model prediction and the assumption of a soft symmetry energy for infinite nuclear matter, while more realistic transport simulations of the collisions show a similar agreement with the data but also exhibit a reduced sensitivity to the symmetry term.

Original languageEnglish
Article number011901
JournalPhysical Review C - Nuclear Physics
Volume75
Issue number1
DOIs
Publication statusPublished - 2007 Feb 5

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mesons
collisions
symmetry
predictions
stiffness
kinetic energy
energy
probes
sensitivity
detectors
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Lopez, X., Kim, Y. J., Herrmann, N., Andronic, A., Barret, V., Basrak, Z., ... Gaitanos, T. (2007). Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV. Physical Review C - Nuclear Physics, 75(1), [011901]. https://doi.org/10.1103/PhysRevC.75.011901

Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV. / Lopez, X.; Kim, Y. J.; Herrmann, N.; Andronic, A.; Barret, V.; Basrak, Z.; Bastid, N.; Benabderrahmane, M. L.; Čaplar, R.; Cordier, E.; Crochet, P.; Dupieux, P.; Dželalija, M.; Fodor, Z.; Gašparić, I.; Grishkin, Y.; Hartmann, O. N.; Hildenbrand, K. D.; Hong, Byungsik; Kang, T. I.; Kecskemeti, J.; Kirejczyk, M.; Kiš, M.; Koczon, P.; Korolija, M.; Kotte, R.; Lebedev, A.; Leifels, Y.; Merschmeyer, M.; Neubert, W.; Pelte, D.; Petrovici, M.; Rami, F.; Reisdorf, W.; Ryu, M. S.; Schüttauf, A.; Seres, Z.; Sikora, B.; Sim, K. S.; Simion, V.; Siwek-Wilczyńska, K.; Smolyankin, V.; Stoicea, G.; Tyminski, Z.; Wagner, P.; Wiśniewski, K.; Wohlfarth, D.; Xiao, Z. G.; Yushmanov, I.; Zhang, X. Y.; Zhilin, A.; Ferini, G.; Gaitanos, T.

In: Physical Review C - Nuclear Physics, Vol. 75, No. 1, 011901, 05.02.2007.

Research output: Contribution to journalArticle

Lopez, X, Kim, YJ, Herrmann, N, Andronic, A, Barret, V, Basrak, Z, Bastid, N, Benabderrahmane, ML, Čaplar, R, Cordier, E, Crochet, P, Dupieux, P, Dželalija, M, Fodor, Z, Gašparić, I, Grishkin, Y, Hartmann, ON, Hildenbrand, KD, Hong, B, Kang, TI, Kecskemeti, J, Kirejczyk, M, Kiš, M, Koczon, P, Korolija, M, Kotte, R, Lebedev, A, Leifels, Y, Merschmeyer, M, Neubert, W, Pelte, D, Petrovici, M, Rami, F, Reisdorf, W, Ryu, MS, Schüttauf, A, Seres, Z, Sikora, B, Sim, KS, Simion, V, Siwek-Wilczyńska, K, Smolyankin, V, Stoicea, G, Tyminski, Z, Wagner, P, Wiśniewski, K, Wohlfarth, D, Xiao, ZG, Yushmanov, I, Zhang, XY, Zhilin, A, Ferini, G & Gaitanos, T 2007, 'Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV', Physical Review C - Nuclear Physics, vol. 75, no. 1, 011901. https://doi.org/10.1103/PhysRevC.75.011901
Lopez, X. ; Kim, Y. J. ; Herrmann, N. ; Andronic, A. ; Barret, V. ; Basrak, Z. ; Bastid, N. ; Benabderrahmane, M. L. ; Čaplar, R. ; Cordier, E. ; Crochet, P. ; Dupieux, P. ; Dželalija, M. ; Fodor, Z. ; Gašparić, I. ; Grishkin, Y. ; Hartmann, O. N. ; Hildenbrand, K. D. ; Hong, Byungsik ; Kang, T. I. ; Kecskemeti, J. ; Kirejczyk, M. ; Kiš, M. ; Koczon, P. ; Korolija, M. ; Kotte, R. ; Lebedev, A. ; Leifels, Y. ; Merschmeyer, M. ; Neubert, W. ; Pelte, D. ; Petrovici, M. ; Rami, F. ; Reisdorf, W. ; Ryu, M. S. ; Schüttauf, A. ; Seres, Z. ; Sikora, B. ; Sim, K. S. ; Simion, V. ; Siwek-Wilczyńska, K. ; Smolyankin, V. ; Stoicea, G. ; Tyminski, Z. ; Wagner, P. ; Wiśniewski, K. ; Wohlfarth, D. ; Xiao, Z. G. ; Yushmanov, I. ; Zhang, X. Y. ; Zhilin, A. ; Ferini, G. ; Gaitanos, T. / Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV. In: Physical Review C - Nuclear Physics. 2007 ; Vol. 75, No. 1.
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title = "Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV",
abstract = "Results on K+ and K0 meson production in 4496Ru + 4496Ru and 4096Zr + 4096Zr collisions at a beam kinetic energy of 1.528A GeV, measured with the FOPI detector at GSI-Darmstadt, are investigated as a possible probe of isospin effects in high-density nuclear matter. The measured double ratio (K+/K0)Ru/(K+/K0)Zr is compared to the predictions of a thermal model and a relativistic mean field transport model using two different collision scenarios and under different assumptions on the stiffness of the symmetry energy. We find good agreement with the thermal model prediction and the assumption of a soft symmetry energy for infinite nuclear matter, while more realistic transport simulations of the collisions show a similar agreement with the data but also exhibit a reduced sensitivity to the symmetry term.",
author = "X. Lopez and Kim, {Y. J.} and N. Herrmann and A. Andronic and V. Barret and Z. Basrak and N. Bastid and Benabderrahmane, {M. L.} and R. Čaplar and E. Cordier and P. Crochet and P. Dupieux and M. Dželalija and Z. Fodor and I. Gašparić and Y. Grishkin and Hartmann, {O. N.} and Hildenbrand, {K. D.} and Byungsik Hong and Kang, {T. I.} and J. Kecskemeti and M. Kirejczyk and M. Kiš and P. Koczon and M. Korolija and R. Kotte and A. Lebedev and Y. Leifels and M. Merschmeyer and W. Neubert and D. Pelte and M. Petrovici and F. Rami and W. Reisdorf and Ryu, {M. S.} and A. Sch{\"u}ttauf and Z. Seres and B. Sikora and Sim, {K. S.} and V. Simion and K. Siwek-Wilczyńska and V. Smolyankin and G. Stoicea and Z. Tyminski and P. Wagner and K. Wiśniewski and D. Wohlfarth and Xiao, {Z. G.} and I. Yushmanov and Zhang, {X. Y.} and A. Zhilin and G. Ferini and T. Gaitanos",
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T1 - Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV

AU - Lopez, X.

AU - Kim, Y. J.

AU - Herrmann, N.

AU - Andronic, A.

AU - Barret, V.

AU - Basrak, Z.

AU - Bastid, N.

AU - Benabderrahmane, M. L.

AU - Čaplar, R.

AU - Cordier, E.

AU - Crochet, P.

AU - Dupieux, P.

AU - Dželalija, M.

AU - Fodor, Z.

AU - Gašparić, I.

AU - Grishkin, Y.

AU - Hartmann, O. N.

AU - Hildenbrand, K. D.

AU - Hong, Byungsik

AU - Kang, T. I.

AU - Kecskemeti, J.

AU - Kirejczyk, M.

AU - Kiš, M.

AU - Koczon, P.

AU - Korolija, M.

AU - Kotte, R.

AU - Lebedev, A.

AU - Leifels, Y.

AU - Merschmeyer, M.

AU - Neubert, W.

AU - Pelte, D.

AU - Petrovici, M.

AU - Rami, F.

AU - Reisdorf, W.

AU - Ryu, M. S.

AU - Schüttauf, A.

AU - Seres, Z.

AU - Sikora, B.

AU - Sim, K. S.

AU - Simion, V.

AU - Siwek-Wilczyńska, K.

AU - Smolyankin, V.

AU - Stoicea, G.

AU - Tyminski, Z.

AU - Wagner, P.

AU - Wiśniewski, K.

AU - Wohlfarth, D.

AU - Xiao, Z. G.

AU - Yushmanov, I.

AU - Zhang, X. Y.

AU - Zhilin, A.

AU - Ferini, G.

AU - Gaitanos, T.

PY - 2007/2/5

Y1 - 2007/2/5

N2 - Results on K+ and K0 meson production in 4496Ru + 4496Ru and 4096Zr + 4096Zr collisions at a beam kinetic energy of 1.528A GeV, measured with the FOPI detector at GSI-Darmstadt, are investigated as a possible probe of isospin effects in high-density nuclear matter. The measured double ratio (K+/K0)Ru/(K+/K0)Zr is compared to the predictions of a thermal model and a relativistic mean field transport model using two different collision scenarios and under different assumptions on the stiffness of the symmetry energy. We find good agreement with the thermal model prediction and the assumption of a soft symmetry energy for infinite nuclear matter, while more realistic transport simulations of the collisions show a similar agreement with the data but also exhibit a reduced sensitivity to the symmetry term.

AB - Results on K+ and K0 meson production in 4496Ru + 4496Ru and 4096Zr + 4096Zr collisions at a beam kinetic energy of 1.528A GeV, measured with the FOPI detector at GSI-Darmstadt, are investigated as a possible probe of isospin effects in high-density nuclear matter. The measured double ratio (K+/K0)Ru/(K+/K0)Zr is compared to the predictions of a thermal model and a relativistic mean field transport model using two different collision scenarios and under different assumptions on the stiffness of the symmetry energy. We find good agreement with the thermal model prediction and the assumption of a soft symmetry energy for infinite nuclear matter, while more realistic transport simulations of the collisions show a similar agreement with the data but also exhibit a reduced sensitivity to the symmetry term.

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