Covariant calculation of K+ production in nucleus-nucleus collisions at SIS-energies

Lang, Andreas; Cassing, W.; Mosel, U.; Weber, Klaus

doi:10.1016/0375-9474(92)90189-q

Cited by 66 publications

(45 citation statements)

References 40 publications

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“…1. This finding is in accordance with our earlier studies on K + production in nucleus-nucleus [2,9,45] and proton-nucleus collisions [51] in line with other groups [52].…”

Section: Kaon and Antikaon Reaction Channelssupporting

confidence: 94%

Kaon versus antikaon production at SIS energies

et al. 1997

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“…1. This finding is in accordance with our earlier studies on K + production in nucleus-nucleus [2,9,45] and proton-nucleus collisions [51] in line with other groups [52].…”

Section: Kaon and Antikaon Reaction Channelssupporting

confidence: 94%

Kaon versus antikaon production at SIS energies

et al. 1997

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“…Since the proposal of Aichelin and Ko that subthreshold K + yield may be sensitive to nuclear equation of state at high densities [87], many works have been done concerning the subthreshold kaon production in heavy-ion collisions using various transport models [19,20,81,[88][89][90][91][92][93]. There have been also several investigations on subthreshold antikaon production [58,72,[94][95][96].…”

Section: G Kaon and Antikaon Production In Heavy-ion Collisionsmentioning

confidence: 99%

Kaons in dense matter, kaon production in heavy-ion collisions, and kaon condensation in neutron stars

1997

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The recent past witnesses the growing interdependence between the physics of hadrons, the physics of relativistic heavy-ion collisions, and the physics of compact objects in astrophysics. A notable example is the kaon which plays special roles in all the three fields. In this paper, we first review the various theoretical investigations of kaon properties in nuclear medium, focusing on possible uncertainties in each model. We then present a detailed transport model study of kaon production in heavy-ion collisions at SIS energies. We shall discuss especially the elementary kaon and antikaon production cross sections in hadron-hadron interactions, that represent one of the most serious uncertainties in the transport model study of particle production in heavy-ion collisions. The main purpose of such a study is to constrain kaon in-medium properties from the heavy-ion data. This can provide useful guidances for the development of theoretical models of the kaon in medium. In the last part of the paper, we apply the kaon in-medium properties extracted from heavy-ion data to the study of neutron star properties. Based on a conventional equation of state of nuclear matter that can be considered as one of the best constrained by available experimental data on finite nuclei, we find that the maximum mass of neutron stars is about 2M⊙, which is reduced to about 1.5M⊙ once kaon condensation as constrained by heavy-ion data is introduced.pacs: 25.75. Dw, 97.60.Jd, 26.60.+c, 24.10.Lx

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“…It is well known from transport calculations [18,40] that heavy mesons and antiprotons are dominantly produced via multiple baryon-baryon collisions where especially nucleonresonance channels play an important role. To gain further insight in the mechanism of p-production we analyse the relative contribution from various channels in more detail by counting the number of collisions N 1 +N 2 that two baryons have undergone before producing an antiproton in a mutual collision and determine the corresponding production probability as a function of N 1 + N 2 for the channels NN, N∆ and ∆∆ separately.…”

Section: E Baryonic Decompositionmentioning

confidence: 99%

Analysis of subthreshold antiproton production inp-nucleus and nucleus-nucleus collisions in the relativistic Boltzmann-Uehling-Uhlenbeck approach

et al. 1994

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We calculate the subthreshold production of antiprotons in the Lorentzcovariant RBUU approach employing a weighted testparticle method to treat the antiproton propagation and absorption nonperturbatively. We find that the antiproton differential cross sections are highly sensitive to the baryon and antiproton selfenergies in the dense baryonic environment. Adopting the baryon scalar and vector selfenergies from the empirical optical potential for proton-nucleus elastic scattering and from Dirac-Brueckner calculations at higher density ρ > ρ 0 we examine the differential antiproton spectra as a function of the antiproton selfenergy. A detailed comparison with the available experimental data for p-nucleus and nucleus-nucleus reactions shows that the antiproton feels a moderately attractive mean-field at normal nuclear matter density ρ 0 which is in line with a dispersive potential extracted from the free annihilation cross section. † Supported by BMFT, GSI Darmstadt and KFA Jülich.

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Covariant calculation of K+ production in nucleus-nucleus collisions at SIS-energies

Cited by 66 publications

References 40 publications

Kaon versus antikaon production at SIS energies

Kaon versus antikaon production at SIS energies

Kaons in dense matter, kaon production in heavy-ion collisions, and kaon condensation in neutron stars

Analysis of subthreshold antiproton production inp-nucleus and nucleus-nucleus collisions in the relativistic Boltzmann-Uehling-Uhlenbeck approach

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