<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi>−</mml:mi></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mo>/</mml:mo><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>ratios in relativistic heavy-ion collisions

Li, G. Q.; Brown, G. E.

doi:10.1103/physrevc.58.1698

Cited by 45 publications

(66 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The off-shell calculations of [121] support the scenario of in-medium potential shifts for K − . [206]) are compared to FOPI data [155]. In both cases solid lines include in-medium potentials, dashed lines refer to calculations without in-medium potentials.…”

Section: Total Yieldsmentioning

confidence: 99%

Kaon production in heavy ion reactions at intermediate energies

Fuchs¹

2006

Progress in Particle and Nuclear Physics

302

View full text Add to dashboard Cite

The article reviews the physics related to kaon and antikaon production in heavy ion reactions at intermediate energies. Chiral dynamics predicts substantial modifications of the kaon properties in a dense nuclear environment. The status of the theoretical predictions as well as experimental evidences for medium effects such as repulsive/attractive mass shifts for K + /K − are reviewed. In the vicinity of the thresholds, and even more pronounced below threshold, the production of strangeness is a highly collective process. Starting from elementary reaction channels the phenomenology of K + and K − production, i.e. freeze-out densities, time scales etc. as derived from experiment and theoretical transport calculations is presented. Below threshold kaon production shows a high sensitivity on the nuclear compression reached in heavy ion reactions. This allows to put constraints on the nuclear equation-of-state which are finally discussed.

show abstract

Section: Total Yieldsmentioning

confidence: 99%

Kaon production in heavy ion reactions at intermediate energies

Fuchs¹

2006

Progress in Particle and Nuclear Physics

302

View full text Add to dashboard Cite

show abstract

“…Especially, their collective flow and spectral shapes at low transverse momenta are expected to be altered within the nuclear environment. The corresponding nuclear mean-field potential acting on the kaons and antikaons are predicted to be weakly positive (∼ 20 to 40 MeV) and strongly negative (∼ −50 to −80 MeV), respectively [11,12]. Kaon and antikaon phase-space distributions [1,13,14,15,16,17,18] as well as azimuthal emission (flow) patterns of kaons [1,19,20,21] support these predictions while the antikaon flow data are not conclusive yet.…”

Section: Introductionmentioning

confidence: 99%

Lambda hyperon production and polarization in collisions of p(3.5 GeV)+Nb

Agakishiev¹,

Arnold²,

Bałanda³

et al. 2014

Eur. Phys. J. A

View full text Add to dashboard Cite

Abstract. Results on Λ hyperon production are reported for collisions of p (3.5 GeV) + Nb, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. The transverse mass distributions in rapidity bins are well described by Boltzmann shapes with a maximum inverse slope parameter of about 90 MeV at a rapidity of y = 1.0, i.e. slightly below the center-of-mass rapidity for nucleonnucleon collisions, ycm = 1.12. The rapidity density decreases monotonically with increasing rapidity within a rapidity window ranging from 0.3 to 1.3. The Λ phase-space distribution is compared with results of other experiments and with predictions of two transport approaches which are available publicly. None of the present versions of the employed models is able to fully reproduce the experimental distributions, i.e. in absolute yield and in shape. Presumably, this finding results from an insufficient modelling in the transport models of the elementary processes being relevant for Λ production, rescattering and absorption. The present high-statistics data allow for a genuine two-dimensional investigation as a function of phase space of the self-analyzing Λ polarization in the weak decay Λ → pπ − . Finite negative values of the polarization in the order of 5 − 20 % are observed over the entire phase space studied. The absolute value of the polarization increases almost linearly with increasing transverse momentum for pt > 300 MeV/c and increases with decreasing rapidity for y < 0.8. PACS.25.75.Dw, 25.75.Gz

show abstract

“…In particular the enhanced K − /K + ratio measured at GSI [11] can also be understood assuming that the antikaons feel a strong attraction [12][13][14][15]. This lowers the threshold for K − production, hence enhancing the ratio at subthreshold energies.…”

Section: Introductionmentioning

confidence: 99%

Partial wave contributions to the antikaon potential at finite momentum

et al. 2001

View full text Add to dashboard Cite

The momentum dependence of the antikaon optical potential in nuclear matter is obtained from a microscopic and self-consistent calculation using the meson-exchange JülichKN interaction. Two self-consistent schemes are discussed, which would lead to substantially different predictions for the width ofK nuclear bound states. The effect of higher partial waves of theKN interaction, beyond the L = 0 component, is studied and found to have moderate but non-negligible effects on theK nuclear potential at zero momentum. At momenta as large as 500 MeV/c, relevant in the analysis of heavy-ion collisions, the higher partial partial waves modify theK optical potential by nearly a factor of two.

show abstract

K−/K+ratios in relativistic heavy-ion collisions

Cited by 45 publications

References 53 publications

Kaon production in heavy ion reactions at intermediate energies

Kaon production in heavy ion reactions at intermediate energies

Lambda hyperon production and polarization in collisions of p(3.5 GeV)+Nb

Partial wave contributions to the antikaon potential at finite momentum

Contact Info

Product

Resources

About