Momentum dependence of hadronic production of the ϕ-meson and its width in nuclear matter

Hartmann, Michael; Kämpfer, B.; Kiselev, Yury T.; Magas, V. K.; Paryev, É. Ya.; Polyanskiy, A.; Roca, L.; Schade, H.; Wilkin, C.

doi:10.1007/978-94-007-4890-3_34

Cited by 1 publication

(1 citation statement)

References 17 publications

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“…The results are compared to the ANKE data in figure 8. We can see that the shape of the momentum dependent cross section is reproduced rather well, as well or even better than other model results which include a φ meson modified in medium cross section [49,50,51]. The overall magnitude is underpredicted for the most heavy nuclear targets, while the φ production cross section on the lightest carbon nuclei is best described by our model.…”

Section: Nuclear Absorption Of the φsupporting

confidence: 65%

Sub-threshold $ϕ$ and $Ξ^-$ production by high mass resonances with UrQMD

Steinheimer,

Bleicher

2015

Preprint

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We present a possible explanation for the deep sub-threshold, φ and Ξ − production yields measured with the HADES experiment in Ar+KCl reactions at E lab = 1.76 A GeV and present predictions for Au+Au reactions at E lab = 1.23 A GeV. To explain the surprisingly high yields of φ and Ξ − hadrons we propose new decay channels for high mass baryon resonances. These new decay channels are constrained by elementary p + p → p + p+φ cross sections, and Ξ − production in p+Nb. Based on the fits to the elementary reactions one obtains a satisfactorily description of φ and Ξ − production in deep sub-threshold Ar+KCl reactions as well as the observed nuclear transparency ratio in proton induced φ production in cold nuclear matter. The results implicate that no new medium effects are required to describe the rare strange particle production data in low energy nuclear collisions.

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Section: Nuclear Absorption Of the φsupporting

confidence: 65%