Subthreshold K+ production in proton-nucleus collisions

Dębowski, M.; Barth, Rolf F.; Boivin, M.; Bornec, Y. Le; Cieślak, M.; Comets, M. P.; Courtat, P.; Gacougnolle, R.; Grosse, E.; Kirchner, T.; Martin, J.; Miśkowiec, D.; Müntz, C.; Schwab, E.; Senger, P.; Sturm, C.; Tatischeff, B.; Wagner, A.; Waluś, W.; Willis, N.; Wurzinger, R.; Yonnet, Jean‐Paul; Zghiche, A.

doi:10.1007/bf02769235

Cited by 35 publications

(48 citation statements)

References 25 publications

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“…It can be seen that at 1.2 GeV the large error of α does not allow any conclusions about the reaction mechanisms. At this energy a dominance of two-step kaon production is expected [3,8,10]. At 1.5 GeV the relatively small value of α=0.73±0.04 is in line with the expected dominance of one-step kaon production [3,8,10].…”

Section: Target-mass Dependencesupporting

confidence: 74%

“…At this energy a dominance of two-step kaon production is expected [3,8,10]. At 1.5 GeV the relatively small value of α=0.73±0.04 is in line with the expected dominance of one-step kaon production [3,8,10]. Double differential cross sections for K + -production with Be, Al, Cu and T a targets were measured by Akindinov et al [6] at the Institute for Theoretical and Experimental Physics, Moscow (ITEP).…”

Section: Target-mass Dependencesupporting

confidence: 53%

“…• have been measured by Debowski et al [3] at SATURNE. The parameter α evaluated from the data at T p =1.2 and 1.5 GeV is shown in Fig.…”

Section: Target-mass Dependencementioning

confidence: 97%

“…The inconsistency between the PNPI [1] data and the other experiments [2,3,6] might be related to the different beam energies. In fact, since the PNPI measurements were performed at T p <1.0 GeV, thus substantially below the kaon production threshold in free space, twostep mechanisms or many body effects should be more pronounced.…”

Section: Target-mass Dependencementioning

confidence: 99%

“…Total K + -production cross sections have been measured at the PNPI synchrocyclotron for targets between Be and Pb and projectile energies T p between 0.8 and 1.0 GeV [1], i.e., at beam energies far below the free nucleon-nucleon threshold. Inclusive differential cross sections have been studied at BEVALAC [2], SATURNE [3] and CELSIUS [4]. Partial momentum spectra have been obtained at different laboratory emission angles in the range 10…”

Section: Introductionmentioning

confidence: 99%

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Phenomenological analysis ofK+-meson production in proton-nucleus collisions

Büscher¹,

Ioffe²,

Koptev³

et al. 2001

Phys. Rev. C

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We investigate the experimental data, total and differential cross sections, on the production of K + -mesons in pA interactions at projectile energies between Tp = 0.8 and 2.9 GeV, covering the transition across the free nucleon-nucleon threshold at 1.58 GeV. No clear evidence for the expected change of the dominant reaction mechanism from two-step to direct kaon production is found. It is suggested that further data, in particular at forward angles, are taken in order to clarify the situation. It also is shown that, independent of the beam energy and emission angle, the invariant K + -production cross sections show an overall exponential scaling behaviour with the squared four-momentum transfer between the beam proton and the produced K + -meson for t<−0.05 GeV 2 . The most recent data from COSY-Jülich, differential cross sections measured for t>0 GeV 2 , show a strongly different t dependence. Further data at forward angles and different beam energies are needed in order to exploit this region of kinematically extreme conditions.

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Section: Target-mass Dependencesupporting

confidence: 74%

Section: Target-mass Dependencesupporting

confidence: 53%

“…• have been measured by Debowski et al [3] at SATURNE. The parameter α evaluated from the data at T p =1.2 and 1.5 GeV is shown in Fig.…”

Section: Target-mass Dependencementioning

confidence: 97%

Section: Target-mass Dependencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Phenomenological analysis ofK+-meson production in proton-nucleus collisions

Büscher¹,

Ioffe²,

Koptev³

et al. 2001

Phys. Rev. C

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Modelization of the EOS

Fuchs¹,

Wolter²

Dynamics and Thermodynamics With Nuclear Degrees of Freedom

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Heavy meson production in proton-nucleus reactions with empirical spectral functions

Sibirtsev¹,

Cassing²,

Mosel

1997

Z Phys A - Particles and Fields

116

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We study the production of K + , ρ, ω and φ mesons in p + 12 C reactions on the basis of empirical spectral functions. The high momentum, high removal energy part of the spectral function is found to be negligible in all cases close to the absolute threshold. Furthermore, the two-step process (pN → πN N ; πN → N + K + , ρ, ω, φ) dominates the cross section at threshold energies in line with earlier calculations based on the folding model. * Supported by Forschungszentrum Jülich

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Subthreshold K+ production in proton-nucleus collisions

Cited by 35 publications

References 25 publications

Phenomenological analysis ofK+-meson production in proton-nucleus collisions

Phenomenological analysis ofK+-meson production in proton-nucleus collisions

Modelization of the EOS

Heavy meson production in proton-nucleus reactions with empirical spectral functions

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