Subthreshold antiproton production in nucleon-nucleus and nucleus-nucleus collisions

Baldin, A. A.; Gavrilov, Yu.K.; Guber, F.F.; Kurepin, A.; Pantuev, V.; Prokhvitilov, M.A.; Razin, V. I.; Reshetin, A.; Filippov, S.

doi:10.1016/0375-9474(90)90644-2

Cited by 20 publications

(13 citation statements)

References 11 publications

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“…In this work an attempt of its generalization on the case of the K--mesons production in these interactions has been undertaken. Apart from the purely applied significance the obtained results may also serve the interpretation of the experiments [10,23,24] on the production of K--mesons in the nucleus-nucleus collisions at various energies.…”

Section: Introductionmentioning

confidence: 91%

“…It is seen that the calculation is in reasonable agreement with the experiment, although there is a small discrepancy in the softest part of the spectrum, which seems to be caused by the rescattering of kaons in the nuclear medium (which was taken into account only approximately in deriving expression (13)), as well as by the In Fig. 10 we show the energy dependence of the inclusive invariant cross section for the production of K--mesons with a momentum of 0.8 GeV/c and at an angle of 24 ~ by protons on the 12C nucleus compared with the experimental data [10]. It is evident that at go < 5 GeV there is a satisfactory agreement of our calculations with the experiment.…”

Section: Iv(a)=afp(r)drexp[-#(po) F P(r+x'ao)dx'mentioning

confidence: 97%

“…The experimental information [9,10] one the production of K--mesons in the collisions of protons with light nuclei (see the next section) may serve as another additional criterion for testing the applicability of formulas (10)- (12) at low energies. And finally, another important criterion for verification of the results obtained is the comparison of the total K--meson production cross sections found from the data on the multiplicity, partial cross sections for the production of K~ and from the double differential distributions.…”

Section: Ek-and (Ek-)m~ Are the Total Energy Of The K--mesonmentioning

confidence: 99%

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Production ofK ?-mesons in proton-proton and proton-nucleus interactions at various energies

Efremov

Paryev

1994

Z. Physik A - Hadrons and Nuclei

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Section: Introductionmentioning

confidence: 91%

Section: Iv(a)=afp(r)drexp[-#(po) F P(r+x'ao)dx'mentioning

confidence: 97%

Section: Ek-and (Ek-)m~ Are the Total Energy Of The K--mesonmentioning

confidence: 99%

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Production ofK ?-mesons in proton-proton and proton-nucleus interactions at various energies

Efremov

Paryev

1994

Z. Physik A - Hadrons and Nuclei

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“…Antiproton production at energies of a few GeV/u is the most extreme subthreshold production process and has been observed in proton-nucleus collisions already more than 20 years ago [5][6][7]. Experiments at the JINR [8] and at the BEVALAC [9,10] have provided, furthermore, first measurements of subthreshold antiproton production in nucleus-nucleus collisions. Since then the problem was taken up again at KEK [11] and GSI [12] with new detector setups.…”

Section: Introductionmentioning

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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“…at GSI [6], proton and carbon nuclei with 3.65 GeV/nucl. at JINR [2] [3], with a deuteron beam at KEK [5] and protons and a Si-beam at LBL for antiproton and K − production [4]. The scaling in Figure 1 is observed with a Z-parameter equal 1 for proton beam, 1.3 for deuteron, 2 for carbon beams and 3 for Si, Ne, and Ni nuclei [8].…”

Section: Parton Model For Particle Production In Heavy Ion Collisionsmentioning

confidence: 99%

Superheavy Particle Production in High Energy Heavy Ion Collisions

Kurepin¹

2021

JMP

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The existence of several TeV superheavy particles (SHPs) is predicted by theories beyond the Standard Model. Particles with a mass exceeding the energy in the center of mass in the collision of protons with protons can be produced in subthreshold heavy ion collisions at the LHC. The purpose of the performed research was to estimate the rate of a rare process of SHPs production. It was shown that the data on the subthreshold production of antiprotons can be explained by the phenomenological parton model. The obtained parton distribution function was used to determine the number of SHPs produced in subthreshold heavy ion collisions at the LHC. In one month of collision of lead with lead, the yield of 16 TeVparticles is about 70 per year. To study the kinematically forbidden phenomena in proton-proton interactions in collisions of heavy nuclei at the LHC, an experiment on the production of antiprotons is proposed in the ALICE fixed target project.

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Subthreshold antiproton production in nucleon-nucleus and nucleus-nucleus collisions

Cited by 20 publications

References 11 publications

Production ofK ?-mesons in proton-proton and proton-nucleus interactions at various energies

Production ofK ?-mesons in proton-proton and proton-nucleus interactions at various energies

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

Superheavy Particle Production in High Energy Heavy Ion Collisions

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