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; B. Hong; T. I. Kang; 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

doi:10.1103/PhysRevC.75.011901

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, B. Hong, T. I. KangJ. 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 language	English
Article number	011901
Journal	Physical Review C - Nuclear Physics
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.75.011901
Publication status	Published - 2007

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.75.011901

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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, B., ... Gaitanos, T. (2007). Isospin dependence of relative yields of K+ and K0 mesons at 1.528A GeV. Physical Review C - Nuclear Physics, 75(1), Article 011901. https://doi.org/10.1103/PhysRevC.75.011901

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

@article{881e48cc233d458ba812f24df40d769b,

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. {\v C}aplar and E. Cordier and P. Crochet and P. Dupieux and M. D{\v z}elalija and Z. Fodor and I. Ga{\v s}pari{\'c} and Y. Grishkin and Hartmann, {O. N.} and Hildenbrand, {K. D.} and B. Hong and Kang, {T. I.} and J. Kecskemeti and M. Kirejczyk and M. Ki{\v s} 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-Wilczy{\'n}ska and V. Smolyankin and G. Stoicea and Z. Tyminski and P. Wagner and K. Wi{\'s}niewski and D. Wohlfarth and Xiao, {Z. G.} and I. Yushmanov and Zhang, {X. Y.} and A. Zhilin and G. Ferini and T. Gaitanos",

year = "2007",

doi = "10.1103/PhysRevC.75.011901",

language = "English",

volume = "75",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

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, B.

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

Y1 - 2007

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.

UR - http://www.scopus.com/inward/record.url?scp=33846599360&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.75.011901

DO - 10.1103/PhysRevC.75.011901

M3 - Article

AN - SCOPUS:33846599360

SN - 0556-2813

VL - 75

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 1

M1 - 011901

ER -

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

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