Antiproton production in p-nucleus and nucleus-nucleus collisions

G. Batko, W. Cassing, U. Mosel, K. Niita, G. Wolf

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The production of antiprotons in proton-nucleus and nucleus-nucleus reactions is analyzed with respect to baryon-baryon production processes. The dynamical evolution of the phase-space distributions is treated on the basis of the Vlasov-Uehling-Uhlenbeck transport theory including explicitly pion, Δ(1232) and N*(1400) degrees of freedom and considering free on-shell production processes. At very low subthreshold energies it is found that nucleon resonances account for the major part of the antiproton yield. Also, higher chance nucleon-nucleon collisions play a significant role, especially in the nucleus-nucleus case. Quantitatively reliable predictions of the antiproton yield are hampered by uncertainties in the elementary NN → pp + NN cross section close to threshold.

Original languageEnglish
Pages (from-to)331-336
Number of pages6
JournalPhysics Letters B
Volume256
Issue number3-4
DOIs
Publication statusPublished - Mar 14 1991

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antiprotons
nuclei
collisions
baryons
transport theory
pions
degrees of freedom
thresholds
protons
cross sections
predictions
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Antiproton production in p-nucleus and nucleus-nucleus collisions. / Batko, G.; Cassing, W.; Mosel, U.; Niita, K.; Wolf, G.

In: Physics Letters B, Vol. 256, No. 3-4, 14.03.1991, p. 331-336.

Research output: Contribution to journalArticle

Batko, G. ; Cassing, W. ; Mosel, U. ; Niita, K. ; Wolf, G. / Antiproton production in p-nucleus and nucleus-nucleus collisions. In: Physics Letters B. 1991 ; Vol. 256, No. 3-4. pp. 331-336.
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