φ-meson production and the in-medium φ-width in proton-nucleus collisions

Hartmann, Michael; Kiselev, Yu.T.; Paryev, É. Ya.; Polyanskiy, A.; Schadet, H.; Wilkin, C.

doi:10.1063/1.3542003

Cited by 7 publications

(4 citation statements)

References 16 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 f meson modified in medium cross section [49][50][51]. The overall magnitude is underpredicted for the most heavy nuclear targets, while the f production cross section on the lightest carbon nuclei is best described by our model.…”

Section: Nuclear Absorption Of the Fsupporting

confidence: 65%

Sub-thresholdϕand ${{\rm{\Xi }}}^{-}$ production by high mass resonances with UrQMD

Steinheimer

Bleicher

2015

J. Phys. G: Nucl. Part. Phys.

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We present a possible explanation for the deep sub-threshold, f and Xproduction yields measured with the HADES experiment in Ar+KCl reactions at E 1.76 lab =A GeV and present predictions for Au+Au reactions at E 1.23 lab =A GeV. To explain the surprisingly high yields of f and Xhadrons we propose new decay channels for high mass baryon resonances. These new decay channels are constrained by elementary p p p p +  + + f cross sections, and Xproduction in p+Nb. Based on the fits to the elementary reactions one obtains a satisfactorily description of f and Xproduction in deep sub-threshold Ar+KCl reactions as well as the observed nuclear transparency ratio in proton-induced f 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 Fsupporting

confidence: 65%

Sub-thresholdϕand ${{\rm{\Xi }}}^{-}$ production by high mass resonances with UrQMD

Steinheimer

Bleicher

2015

J. Phys. G: Nucl. Part. Phys.

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“…The relative normalization uncertainty, which is described in detail in Refs. [25,29], is about 4%-6%, depending on the target nucleus.…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…Although only used here for efficiency studies, forward-going charged particles could also be measured in coincidence. The positively charged kaon was first selected using a dedicated detection system that can identify a K + against a pion and/or proton background that is 10 5 times more intense [29,31,32]. The coincident K − was subsequently identified from the time-of-flight difference between the stop counters in the negative and positive detector systems.…”

Section: Experiments and Resultsmentioning

confidence: 99%

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Momentum dependence of theφ-meson nuclear transparency

Hartmann¹,

Kiselev²,

Polyanskiy³

et al. 2012

Phys. Rev. C

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The production of φ mesons in proton collisions with C, Cu, Ag, and Au targets has been studied via the φ → K + K − decay at an incident beam energy of 2.83 GeV using the ANKE detector system at COSY. For the first time, the momentum dependence of the nuclear transparency ratio, the in-medium φ width, and the differential cross section for φ-meson production at forward angles have been determined for these targets over the momentum range of 0.6-1.6 GeV/c. There are indications of a significant momentum dependence in the value of the extracted φ width, which corresponds to an effective φN absorption cross section in the range of 14-21 mb.

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